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As we delve into the subcellular world, we uncover pivotal insights for advancing our understanding of animal health and disease. Immunoelectron microscopy (IEM) is the same as immunohistochemistry or immunocytochem istry at the light microscopy level. The Power of IEM combines the high-resolution imaging capabilities of electron microscopy with the specificity of immunolabeling. This robust procedure allows us to visualize the precise local ization of proteins and other molecules within cells, providing a detailed cellular architecture and function map. This technique is known as immunogold staining (IGS) or immunogold labelling (De Paul et al., 2012).

Principle of Immunoelectron Microscopy (Iem)

The basic principle of IEM is based on the specific binding of a primary antibody to the target antigen in the sample. A secondary antibody, which is conjugated to colloidal gold particles, is then added. This secondary antibody binds to the primary antibody. The gold particles are electron-dense, meaning they scatter electrons effectively. If viewed under an electron microscope, these particles appear as dark spots, indicating the location of the target antigen. This method demonstrates very specificity and high contrast, making it easier to visualize and study the distribution of proteins at the ultrastructural level (Schwartzbach & Osafune, 2010; Murtey, 2016).

Introduction

Biodynamic farming is a holistic and sustainable approach to agriculture that goes beyond organic practices, incorporating spiritual, ethical, and ecological dimensions into farming and food production. Rooted in the early 20th century, this method is based on the teachings of Rudolf Steiner, an Austrian philosopher, who laid the groundwork for what has become a global movement aimed at creating a harmonious balance between nature and agriculture. Unlike conventional farming, which often relies heavily on chemical inputs and monoculture practices, biodynamic farming emphasizes the interdependence of all elements within a farming system. This includes the soil, plants, animals, and even cosmic forces. The approach seeks to enhance the vitality of the farm as a living organism, fostering a self-sustaining and self-regulating ecosystem.

Central to biodynamic farming is the concept of the farm as a closed-loop system, where all inputs are produced on-site. This includes composting organic waste, rotating crops to maintain soil fertility, and using herbal and mineral preparations to enhance the health and resilience of the farm. These preparations are often made from specific plants, minerals, and animal manure, which are applied according to a biodynamic calendar that aligns farming activities with the lunar and cosmic cycles.

Cooling systems play a vital role in cold chain logistics, serving as essential components that regulate temperature for storage, processing, and transportation. An efficient cooling system ensures that food and other perishable products remain fresh for extended periods, even before they begin their journey. Various cold chain products require specific temperature settings to maintain their quality and integrity until they reach their final destination.
For instance, tropical fruits such as bananas and pineapples must be stored at a consistent temperature between 12°C and 14°C. If the temperature exceeds this range, the fruits may ripen prematurely, compromising their quality. Likewise, food items like milk, vegetables, and other perishable fruits should be cooled within the range of 2°C to 4°C. This temperature effectively eliminates harmful pathogens and prevents bacterial growth, preserving the freshness of the produce.
For businesses dealing with frozen food, seafood, or ice cream, a more advanced cooling system is necessary—one that can maintain temperatures as low as -30°C. Such systems are essential to prevent thawing and spoilage, ensuring that frozen goods remain in optimal condition throughout their transportation and storage.

Beekeeping in India has a long-standing and diverse legacy, deeply embedded in traditional knowledge systems and rural livelihoods. References to honey collection are found in ancient texts like the Rigveda and Charaka Samhita, where honey was valued for its medicinal, spiritual, and culinary uses. Historically, tribal honey hunters collected wild honey from cliffs, tree hollows, and forest hives using time-tested, sustainable methods that honored the natural rhythms of bees. While these practices were rooted in indigenous wisdom, the shift to structured beekeeping—using man-made hives—began during colonial times and gained further momentum after independence.

The establishment of institutions such as the Khadi and Village Industries Commission (KVIC) in the 1950s and the Central Bee Research and Training Institute (CBRTI) in Pune played a pivotal role in promoting scientific beekeeping and offering formal training. In recent years, the focus has transitioned toward more natural and sustainable beekeeping models, especially within organic and natural farming frameworks.

In natural farming practices, the adoption of natural and indigenous hive designs aligns with values of sustainability, simplicity, and care for bee wellbeing. Unlike commercial systems that rely on uniform Langstroth hives for maximum honey production, natural beekeeping focuses on affordable, locally sourced, and non-intrusive hive models that support bees’ instinctive behaviors with minimal disruption.

These hives are constructed to replicate bees’ natural nesting environments, such as hollow trees or crevices in rocks. They offer suitable insulation, darkness, airflow, and internal structure that support the colony’s natural rhythm. Rather than prioritizing honey output, these hives are intended to promote the long-term health and stability of the bees. Typically, natural hives remain in a fixed position, allow bees to build immobile combs, and need fewer inspections, which helps reduce colony stress.

Such indigenous designs uphold the core ideals of natural farming—selfsufficiency, minimal interference, and ecological balance—while also making beekeeping more practical and inclusive for small-scale and resource-limited farmers.

Natural beekeeping emphasizes nurturing bee colonies through a diet that mirrors their natural foraging behavior while avoiding synthetic inputs. Bees instinctively collect nectar and pollen from a diverse range of flowering plants, which supply essential carbohydrates, proteins, vitamins, and minerals for their development, immunity, and productivity. In a thriving environment free from pesticides, bees meet their nutritional needs independently. However, when natural forage becomes scarce—due to seasonal changes, drought, or habitat loss—supplementary feeding may be required to maintain colony strength.

In natural farming, supplements are offered using organic, chemicalfree options such as jaggery-based sugar syrup, diluted honey from surplus or crystallized stores, or herbal infusions made from tulsi, neem, and turmeric to boost bee digestion and immunity. These methods support crucial colony functions like brood development, wax production, and honey storage while reducing stress that could lead to disease outbreaks

Creating and sustaining a healthy aquarium depends on the correct setup and operation of filtration, aeration, and heating systems. These components function collectively to maintain clean water, adequate oxygenation, and consistent temperatures—key elements for the health and comfort of aquatic life.
Filtration systems clear debris, neutralize toxic substances like ammonia and nitrites, and provide a home for beneficial bacteria that fuel the nitrogen cycle. Options include internal filters, canister models, sponge filters, and hang-on-back units, each ideal for different tank capacities and setups.
Aeration equipment—such as air pumps, bubble stones, and diffusers— boosts dissolved oxygen and enhances water movement, which is especially critical in well-stocked or densely planted aquariums and during warmer periods when oxygen tends to deplete. Heaters are essential for tropical tanks, maintaining water temperatures typically between 24–28°C. A stable temperature supports healthy fish metabolism, immune response, and breeding activity. Together, these systems are the core of a functioning aquarium. Choosing the right equipment and maintaining it regularly ensures optimal conditions for both fish and plants.
TYPES OF FILTERS: INTERNAL, EXTERNAL, SPONGE, CANISTER
Aquarium filters come in various types such as internal, external (canister), sponge, and hang-on-back (HOB) filters. Internal filters operate from inside the tank, while external canister filters function outside. Sponge filters work using an air pump that moves water through a foam medium. HOB filters are mounted externally on the tank’s back.

Selecting and adding fish to an aquarium is a crucial process that directly affects the tank’s ecological stability, visual harmony, and long-term success. Effective fishkeeping involves more than just choosing attractive species—it requires a thoughtful understanding of each fish’s behavior, tank needs, dietary preferences, and environmental compatibility.
When choosing fish, consider the aquarium type—whether it’s a community setup, a biotope, or a species-specific tank. Factors such as tank size and water conditions (including pH, temperature, and hardness) should guide your selection. It’s essential to know which species are peaceful (like mollies, tetras, and guppies) and which are known to be aggressive or territorial (such as bettas or cichlids), and
avoid housing incompatible fish together.
Proper stocking density is vital for tank health. Overcrowding can lead to water pollution, increased stress, and disease outbreaks, while too few fish may destabilize the biological balance. The general guideline of “1 inch of fish per gallon” works for small freshwater aquariums, but must be adjusted for fish size, waste production, and swimming habits. New fish should be introduced gradually, particularly in newly cycled tanks, to avoid overloading the filtration system. Quarantining newcomers is also advised to reduce the risk of introducing illnesses.
A well-planned fish selection and stocking strategy promotes a thriving, visually appealing aquarium that is stable, easier to care for, and more enjoyable to watch.
CRITERIA FOR SELECTION: COMPATIBILITY, SIZE, ACTIVITY
When choosing and stocking fish for an aquarium, it’s essential to consider compatibility, adult size, and behavioral traits. Compatibility ensures that fish can coexist peacefully, while size and activity level help prevent overcrowding and stress, contributing to a stable and healthy aquatic environment.

Introduction
Food is a basic human need that is necessary for survival. The three main sources of our food are fishing, farming, and animal husbandry. Modern agricultural practices are unsustainable and employ enormous amounts of pesticides and fertilizers, which pollute the environment. October 16th has been designated as World Food Day.
Global Food Issues
• The rate of food production is not keeping up with the increasing demand.
• There are significant differences in the accessibility of wholesome food. Malnutrition is still a major issue for several tribes, particularly for women and children.
• Our rich soils are being depleted more quickly than they can replenish themselves.
• The conversion of wetlands, meadows, and forests to agricultural usage has resulted in significant ecological issues.
• There is an indication of exhaustion in our upland and marine fish resources.

Climate
This refers to the long-term statistical data of temperature, humidity, wind, precipitation, atmospheric particle count, and many other meteorological parameters in a particular area. However, weather refers to the current state of these same elements over a maximum of two weeks. The statistical long-term representation of the shortterm weather is called climate. A region’s “climate” is its average long-term weather. Temperature and readiness determine the climate. The variations between the average circumstances at two different times can be used to define changes in the climate. The atmosphere, seas, ice sheets (cryosphere), living things (biosphere), and soils, sediments, and rocks (geosphere) all contribute to and are a part of the global climate system.
When the sun falls on moisture droplets in the earth’s atmosphere, a spectrum of light appears in the sky, creating an optical and meteorological phenomenon known as a rainbow.
A wilderness is an area of the planet’s natural ecosystem that has not seen major alterations from human activities.
The atmosphere, a body of gases or air around the earth, shields it from harm and makes life possible. The planet’s atmosphere is primarily made up of nitrogen, with only 21% being oxygen; the remaining little portion is made up of carbon dioxide and other gases. The earth is divided into five separate layers, ranked from lowest to highest:

The Environment (Protection) Act
In 1986, the Environment (Protection) Act was introduced. Concern over the environment’s declining condition grew, leading to the passage of this act to safeguard it. The goal is to plan, organize, and carry out the long-term requirements for environmental safety as well as to oversee and coordinate the development of an effective system for responding to environmental emergencies.
If we want to protect our environment, we must move far more quickly to execute this legislation. Food cycles are disrupted and species are lost when dangerous substancesare present in the atmosphere and aquatic environments in excess.
The Environment Act of 1986 has a Global Context in Addition to Aignificant Constitutional Ramifications.
• This act put into practice the spirit of declaration approved by the United Nations Conference on Human Environment, held in Stockholm in June 1972.
• In the 1970s, environmental protection gained national priority because to the significant growth in damages.
• Food chains are disrupted and species are lost when there are excessive quantities of dangerous substances in the atmosphere and aquatic habitats.
• Goals
• Clearly defining what environmental conservation is.
• Determining the generally acknowledged regions that pose a threat to the life support system.

Integrated Farming Systems (IFS) involve the integration of various agricultural enterprises—such as crops, livestock, fisheries, horticulture, and poultry—within a single farm unit to maximize productivity, ensure sustainability, and diversify income sources. The effectiveness of an IFS largely hinges on selecting the right site and devising a well-thought-out plan, which together create the groundwork for a resilient and efficient farming system. Site selection and planning in IFS focuses on identifying a suitable location and developing a farm layout that allows seamless interaction among different farming components. Key factors to consider include the compatibility of soil and climate, the availability of water and other natural resources, and the optimal use of space and inputs. A carefully chosen site and integrated design enhance synergy between farm components, improve resource efficiency, and increase the overall profitability and sustainability of the system.
TOPOGRAPHY, SOIL, WATER AVAILABILITY, AND CLIMATIC CONDITIONS
In Integrated Fish Farming Systems (IFS) in India, topography plays a crucial role in site selection and planning, impacting the success of the system. Topography affects water management, soil suitability, and overall feasibility of the farm. Local Topography and Site Selection Local topography largely determines which type of pond you will build. The choice is based on the study of the longitudinal profile and cross-secitonal profiles of the valley. Look for Sites:
• Where water drainage will be possible by gravity;
• Where the earthwork will be minimum;
• Where it will be easy to balance the volume of earth to be excavated and that to be filled in.

Integrated fish farming involves the simultaneous cultivation of fish alongside other organisms, such as plants or animals, with the primary goal of achieving maximum yield using minimal resources in a shorter period. One notable form of this practice is Rice–Fish farming, which entails raising fish within the same land area used for rice cultivation. This method yields significantly higher productivity compared to rice cultivation alone.
Traditionally, the practice involved digging several small ditches in the rice fields and adding tree branches or bushes to create artificial habitats for wild fish. Occasionally, Carpio fry were stocked. However, the production levels were quite low—around 50 kg per hectare.
Since the 1990s, Non-Governmental Organizations (NGOs) have actively promoted Rice–Fish farming, enhancing it to include both nursery-stage and tablesize fish production. Additionally, Macrobrachium rosenbergii (giant freshwater prawn) is now cultured to increase profits and diversify outputs. Common species used in modern Rice–Fish systems include Labeo rohita (Rui), Catla catla (Catla), Cirrhina mrigala (Mrigel), Cyprinus carpio (both common and mirror carp), Hypophthalmichthys molitrix (Silver carp), Tilapia species, Thai barb (Puntius gonionotus), and M. rosenbergii. Yields have improved significantly under this system, reaching approximately 200 kg per hectare, much higher than in traditional setups.
PADDY-CUM-FISH CULTURE MODELS (SIMULTANEOUS & ROTATIONAL)
In rice fields that remain waterlogged for 3 to 8 months annually, fish often find their way into the waters naturally. This likely led to the practice of intentional stocking and harvesting of fish in paddy fields. The age-old method of trapping fish and prawns using cloths like gamcha or dhoti in fallow fields is still common in India.

Aquaponics is a method of soilless culture that combines aquaculture (raising fish) and hydroponics (growing plants without soil). It’s a sustainable and efficient system where fish waste provides nutrients for plants, and plants filter the water, creating a closed-loop ecosystem. This integration allows for a self-sustaining food production system with reduced water usage and increased resource efficiency.
CONCEPT OF AQUAPONICS – INTEGRATION OF AQUACULTURE AND HYDROPONICS
Aquaponics is a sustainable farming system that combines aquaculture and hydroponics. Aquaculture involves raising fish or other aquatic animals in tanks, while hydroponics is the practice of growing plants without soil, using nutrientrich water instead. Aquaponics merges these two systems into a symbiotic environment where both fish and plants thrive.

Protected cultivation structures such as greenhouses, polyhouses, and net houses represent significant advancements in agricultural production, offering growers the ability to create an environment that is partially or fully isolated from external weather conditions. These structures are vital tools in modern horticulture and floriculture, especially in areas experiencing unpredictable weather patterns, water scarcity, and heightened pest pressures. The core objective of protected cultivation is to optimize the internal microclimate to meet plants’ physiological needs, ensuring higher yields, improved quality, and year-round cultivation. Achieving these outcomes requires a deep understanding and management of various microclimate factors, such as temperature, relative humidity, light intensity and quality, carbon dioxide (CO?) concentration, and air circulation. Each of these elements plays a crucial role in influencing plant health, photosynthetic efficiency, nutrient uptake, resistance to pests and diseases, and overall productivity.
Effective management of the microclimate begins with controlling temperature, which is arguably the most important factor affecting plant growth. While optimal temperature ranges vary by crop, even small deviations can disrupt essential physiological processes like germination, transpiration, and flowering. To maintain ideal temperatures in protected environments, growers employ a combination of passive and active strategies, such as utilizing roof and side vents for natural ventilation, applying shade nets during periods of intense sunlight, using fogging systems for evaporative cooling, and installing heaters or thermal blankets during colder months. These tools are often automated with sensors and climate controllers, making the system responsive and energy-efficient. In addition to temperature, managing relative humidity (RH) is essential.
Excessive RH can encourage the growth of fungal pathogens, while low RH can lead to water stress and hinder pollination. Maintaining RH between 50% and 70% is ideal for most vegetable and ornamental crops. This can be accomplished

Aquaculture, also known as aquafarming, refers to the controlled cultivation of aquatic organisms—such as fish, crustaceans, mollusks, and aquatic plants— for all or part of their life cycles. As wild fisheries face increasing pressure and limitations, aquaculture has emerged as one of the fastest-growing sectors in global food production, offering a sustainable means to meet the rising demand for highprotein food sources. In India, aquaculture plays a crucial role in enhancing food security, generating rural employment, and contributing to economic growth, particularly in states rich in freshwater and coastal resources like Andhra Pradesh, West Bengal, Odisha, Tamil Nadu, and Kerala. A critical component of aquaculture is the hatchery system. Hatcheries are specialized facilities focused on the artificial breeding, hatching, and rearing of aquatic species during their vulnerable early life stages. They provide a consistent and high-quality supply of seed—such as larvae, fry, or fingerlings—for grow-out in aquaculture systems including ponds, tanks, cages, and raceways. Hatchery operations replicate the natural reproductive environment through scientific interventions such as induced breeding, optimized hatching conditions, and biosecure rearing techniques. Their core objectives include genetic enhancement, disease resistance, improved survival rates, and a dependable seed supply for both commercial and small-scale aquaculture ventures. India has seen significant advancements in hatchery technologies, especially for species such as Indian major carps (rohu, catla, mrigal), freshwater prawns, tilapia, pangasius, and the commercially important shrimp species Penaeus vannamei. Modern hatcheries increasingly rely on sophisticated systems like recirculating aquaculture systems (RAS), flow-through setups, and integrated multi-trophic aquaculture (IMTA) models to enhance efficiency and environmental sustainability. These advancements are supported by institutions such as the National Fisheries Development Board (NFDB), the Marine Products Export Development Authority (MPEDA), and various agricultural universities and research institutes

Broodstock management is a cornerstone of sustainable aquaculture. It involves the careful selection, conditioning, and maintenance of mature fish to ensure the consistent production of high-quality eggs and sperm. The health and reproductive success of broodstock directly influence the quality of fry and fingerlings, which are vital for successful fish farming operations. Effective broodstock management focuses on creating an optimal environment to promote gonadal development, fecundity, and survival. Key environmental factors such as water temperature, dissolved oxygen, pH, and photoperiod are closely regulated. Additionally, species-specific nutrition—particularly diets rich in protein, essential fatty acids, and vitamins—is essential for gamete development and reproductive performance. In captive environments, many fish species face reproductive dysfunction, especially in the final stages of oocyte maturation. Hormonal treatments are commonly used to induce final maturation and spawning. For instance, in salmonids, eggs must be stripped at the precise time of ovulation to prevent overripening, which can occur within hours. Thus, hormonal manipulation is crucial to ensure precise timing and improve spawning outcomes. Species selection for broodstock is based on biological characteristics such as size at maturity, reproductive behavior, feeding habits, and environmental tolerance. Farms may choose to rear their own broodstock from juvenile stages or collect them from wild populations. Those that raise their own become selfsustaining units, independent of external genetic inputs. Broodstock are typically reared in controlled ponds or tanks, with conditions tailored to their specific needs. This includes sex separation when necessary, as different sexes may require distinct environmental or hormonal cues. For example, male and female sturgeons respond to different hormone treatments. Water parameters are continually adjusted to meet species-specific requirements

Induced breeding in freshwater fishes is a technique used to stimulate ripe fish to breed in captivity, typically by injecting them with pituitary hormones or synthetic hormone extracts. This method is crucial for aquaculture as many farmed fish species don’t naturally breed in captivity. Induced breeding is a technique by which the economically important fishes (which generally do not breed in captive condition) are breed through artificial stimulation. Induced breeding is a technique whereby ripe fish breeders are stimulated by pituitary hormone or any other synthetic hormone introduction to breed in captive condition. It is also known as hypophysation.
A BRIEF HISTORY OF INDUCED BREEDING
Induced breeding has revolutionized aquaculture by allowing fish to reproduce under controlled conditions, overcoming their dependence on natural environmental cues for spawning. The technique’s development has seen major contributions from various countries, leading to its global application in fish farming.
• 1930 – Argentina (Houssay): The journey began in Argentina with Houssay’s pioneering use of pituitary extract to induce premature birth in livebearing fish. This milestone introduced the possibility of manipulating fish reproduction artificially.
• 1934 – Brazil: Brazilian scientists built upon this innovation by successfully applying pituitary extract for induced breeding, confirming its broader applicability beyond Argentina.
• Expansion to America and Russia: Researchers such as Merlin and Hubs in the U.S. and Gerebilisky in Russia quickly adopted and refined the technique, promoting its international recognition in aquaculture research.
• 1937 – India (Khan): Khan achieved India’s first success with induced breeding in Cirrhinus mrigala. This event marked the beginning of induced breeding in Indian aquaculture practices.

In Indian aquaculture hatcheries, water quality management is crucial for successful fish seed production. It involves maintaining key parameters like pH, dissolved oxygen, alkalinity, and temperature within the optimal range for the specific fish species being bred. Proper management techniques include monitoring water quality, ensuring adequate water flow, maintaining appropriate feeding practices, implementing aeration and oxygenation systems, and implementing effective waste management.
PARAMETERS
Fish health is closely linked to a delicate equilibrium between the host, potential pathogens, and their aquatic environment. Any disturbance—particularly in water quality—can induce stress in fish, making them more vulnerable to diseases. Therefore, understanding and managing key water quality parameters is essential for optimizing fish growth and survival.
Dissolved Oxygen
The optimal range for dissolved oxygen (DO) in pond water is between 5 mg/ litre and saturation, ensuring healthy fish growth. Aeration is an effective method to improve DO levels. Common aerators include paddle-wheel and aspirator types. In high-aeration ponds, improper placement of aerators along pond edges can generate strong currents that erode the pond bottom. Hence, strategic placement is crucial.
Temperature
Temperature governs fish metabolism by affecting molecular properties and biochemical reaction rates. Ideal temperature ranges vary: 14–18°C for coldwater species and 24–30°C for warmwater species. In controlled environments like hatcheries, water temperature can be regulated. In large ponds, aerator operation during calm, warm afternoons helps disrupt thermal stratification. Tree planting for shade may help regulate temperature but can reduce sunlight penetration, thus lowering pond productivity.

Health and disease management is a crucial component of hatchery operations in aquaculture. Hatcheries, which rear aquatic organisms like fish, crustaceans, and mollusks during their early life stages, are particularly vulnerable to disease outbreaks due to high stocking densities, variable water quality, and the fragile nature of eggs, larvae, and fry. These outbreaks can result in significant mortality, reduced seed quality, and substantial economic losses.
To prevent such outcomes, a comprehensive health management strategy is essential. This includes maintaining optimal water quality, implementing proper feeding practices, and minimizing stress on the organisms. Regular monitoring and early diagnosis help in identifying diseases promptly, allowing for targeted and effective treatments.
Robust biosecurity protocols are also vital. These measures aim to prevent the introduction and spread of pathogens through controlled access, disinfection procedures, and quarantine practices. Together, these steps help create a stable, disease-free environment that supports the healthy growth and survival of hatchery-reared aquatic species.
COMMON PATHOGENS
India’s aquaculture industry faces significant challenges from various pathogens that affect fish and shellfish health. These include bacteria, fungi (particularly oomycetes), viruses, and parasites, all of which can lead to disease outbreaks, poor growth, and mortality.
1. Bacterial Pathogens:
• Bacterial infections are among the most frequently reported health issues in aquaculture:
• Aeromonas spp.: Aeromonas hydrophila is a common pathogen in carp and other freshwater fish, causing ulcerative and hemorrhagic diseases.

INTRODUCTION TO ROUTINE MAINTENANCE PROCEDURES FOR AGRICULTURAL DRONES
Regular maintenance of agricultural drones is crucial for their best performance and durability, as these sophisticated devices are integral to contemporary agriculture. Agricultural drones endure severe climatic conditions, such as dust, wetness, and fluctuating temperatures, which might impact their performance. Routine maintenance activities, including cleaning, inspecting, calibrating sensors, and assessing component wear, mitigate expensive downtime and guarantee that drones consistently provide accurate data for applications such as crop monitoring, irrigation management, and pest control. By following a regular maintenance schedule, farmers may optimize the dependability and effectiveness of their drone technology, so improving production and reducing the likelihood of malfunctions during essential activities.
UAV systems (drones) necessitate routine maintenance inspections to verify optimal functionality. They are susceptible to deterioration from prolonged usage, particularly when utilized within a bigger fleet.
This checklist may be utilized as frequently as necessary for routine maintenance inspections; however, it is more efficacious to conduct maintenance on a per-flight basis rather than at fixed intervals. Scheduling will more precisely indicate the likelihood of the drone requiring maintenance.
You likely already possess established procedures for determining when and how to conduct maintenance. Verify all items on this list to confirm their operational status and facilitate any required repairs or replacements prior to the next flight.

INTRODUCTION TO SAFETY PROTOCOLS FOR DRONE OPERATIONS
Drones in agriculture have transformed how farmers oversee and cultivate crops, enhance efficiency, and optimize resources. Nonetheless, like any sophisticated technology, the utilization of drones in agricultural contexts necessitates compliance with stringent safety measures to safeguard the operator, the surrounding environment, and the equipment. The size, power, and complexity of agricultural drones entail inherent operational hazards, including possible accidents, collisions, and interference with other equipment or humans. Implementing safety measures not only prevents accidents but also guarantees the accuracy and reliability of acquired data, hence optimizing the advantages of drone technology in agriculture. By complying with safety regulations, such as conducting thorough pre-flight inspections, establishing secure flight areas, and implementing emergency response protocols, farmers can mitigate risks while maximizing the benefits of drones in agricultural management.
Implementing safety guidelines for drone operations in agricultural environments is crucial to safeguard both operators and the ecosystem while optimizing technological efficacy. Drones serve as potent instruments for activities such crop monitoring, spraying, and soil health evaluation; nevertheless, inadequate management or noncompliance with safety protocols may result in accidents, equipment damage, and data integrity issues. The following are essential safety protocols to adhere to when operating drones in agricultural environments:

INTRODUCTION
A Primary Processing Centre (PPC) is a facility that offers essential infrastructure for the initial processing of agricultural produce, including grading, sorting, packaging, and storage. These centers are strategically located near production zones within raw material catchment areas and are supported by Collection Centers (CCs) in nearby villages.
The establishment and efficient management of a Primary Processing Centre (PPC) play a crucial role in enhancing the value of raw agricultural products, improving their marketability, and minimizing post-harvest losses. A welloperated PPC integrates modern processing technologies, optimized resource utilization, and streamlined logistics to ensure high-quality output and long-term sustainability. Advanced processing methods such as drying, milling, juicing, and canning help maintain product quality and nutritional integrity while reducing waste. Additionally, a robust management framework is essential for supervising operations, implementing quality control measures, and maintaining an efficient supply chain that connects local farmers to the processing facility. The effectiveness of a PPC extends beyond technical efficiency, as it also fosters community empowerment through job creation, skill enhancement, and active participation, thereby contributing to both economic development and sustainable agricultural practices. By harmonizing these elements, a PPC serves as a critical hub for agricultural progress, granting farmers improved market access, decreasing reliance on unprocessed exports, and generating value-added products that align with consumer demand.
The manufacturing and management of a Primary Processing Centre (PPC) play a crucial role in transforming raw agricultural produce into value-added products that enhance marketability, reduce post-harvest losses, and improve farmers’ income. A well-established PPC serves as a key

A machine learning model is a program that can find patterns or make decisions from a previously unseen dataset. For example, in natural language processing, machine learning models can parse and correctly recognize the intent behind previously unheard sentences or combinations of words. In image recognition, a machine learning model can be taught to recognize objects - such as cars or dogs. A machine learning model can perform such tasks by having it ‘trained’ with a large dataset. During training, the machine learning algorithm is optimized to find certain patterns or outputs from the dataset, depending on the task. The output of this process - often a computer program with specific rules and data structures - is called a machine learning model. Machine Learning Model is a computational program that learns patterns from data and makes decisions or predictions on new, unseen data. It is created by training a machine learning algorithm on a

Financial modeling using Python has emerged as a highly effective approach for modern finance, combining the flexibility of programming with the analytical rigor required for accurate forecasting and decision-making. Python is particularly valuable because it can handle large datasets, automate repetitive tasks, and integrate advanced statistical and machine learning techniques into financial models, surpassing the limitations of traditional spreadsheet-based approaches. Its extensive libraries, such as pandas, NumPy, scikit-learn, and matplotlib, make it an ideal tool for building robust and dynamic financial models. The foundation of financial modeling in Python begins with data acquisition and preprocessing. Financial data is often sourced from databases, APIs, or CSV files, and Python provides efficient tools to import and clean this information. The pandas library allows analysts to create dataframes, which are flexible structures for organizing, filtering, and transforming data. Preprocessing tasks, such as handling missing values, normalizing variables, and converting date formats, ensure that datasets are ready for accurate modeling. This step is critical, as errors or inconsistencies in the data can lead to incorrect forecasts and flawed financial decisions. Once the data is prepared, Python enables comprehensive exploratory data

Quality control in fish feed manufacturing plays a vital role in ensuring the safety, nutritional value, and uniformity of the final product. It involves a structured set of procedures carried out throughout the entire production cycle— from sourcing raw materials to packaging the finished feed—to confirm that the product adheres to standards that support fish health, growth, and environmental stewardship. At the initial stage, raw materials are tested for factors such as moisture, protein, lipid content, fiber, ash, and the absence of harmful elements like aflatoxins, pesticides, or heavy metals. Leading feed manufacturers enforce strict supplier verification and sampling routines to maintain ingredient quality and authenticity. During production, critical parameters are routinely checked, including grind size, mixing consistency, and temperature and moisture levels during conditioning. The physical integrity of pellets is also evaluated during extrusion or pelleting. Specific performance indicators—like water stability, floatability for floating feeds, and feed conversion ratios (FCR)—are assessed to determine feed effectiveness. Post-production checks include examining the pellet’s appearance (size, shape, and color), along with chemical assessments

Soil structure is highly important for maintaining favourable conditions for water movement, aeration, root development and crop production. In irrigated agriculture, inappropriate management practices can cause structural degradation through compression, puddling, compaction and crust formation. This chapter examines the major processes responsible for deterioration of soil structure and their effects on soil physical properties and crop performance. Soil compaction is discussed in relation to agricultural machinery, pressure distribution, formation of compacted layers and restrictions to root growth and water movement. The chapter also explains soil crusting, its mechanisms, effects on seedling emergence and methods for evaluating crust strength. Slow-permeable soils, including Regur soils, highly permeable soils and soils with shallow water tables are considered from a management perspective. Appropriate management practices are emphasized to restore permeability, improve soil structure and maintain favourable soil-water relationships. The chapter provides an integrated understanding of structural degradation and its management for sustainable irrigated agricultur

Secondary nutrients are essential for balanced plant nutrition and sustained soil fertility in intensively cultivated irrigated systems. This chapter focuses on calcium, magnesium and sulphur, examining their sources, behaviour, availability and management in soil. Calcium is discussed in relation to its sources, fate in soil, crop removal, leaching and factors affecting its availability, including high sodium content, parent material and interactions with other cations. Calcium fertilizers and their practical importance are also considered. The chapter then examines magnesium, including its sources, behaviour in soil, uptake by crops, leaching and fertilizer management. Sulphur receives detailed attention through discussion of organic and inorganic forms, elemental sulphur and sulfides, sulphate behaviour and the different forms occurring in rice soils. Processes such as adsorption, leaching and immobilization influence sulphur availability and are therefore important under irrigated conditions. Practical aspects of sulphur management, sulphur-containing fertilizers and crop responses to sulphur fertilization are discussed, including effects on the nutritional quality of forages

Micronutrients are required in small quantities but are essential for normal plant growth and crop productivity. Their availability in irrigated soils can vary considerably because of changes in soil pH, moisture conditions, organic matter, texture and interactions with other nutrients. This chapter introduces the concepts of micronutrient deficiency and toxicity and discusses critical limits used for evaluating micronutrient status. Particular emphasis is placed on boron and zinc. Boron content, deficiency in Indian soils, availability and leaching are examined, together with the influence of soil texture, pH and moisture. Boron indicator plants, correction of deficiency, sources, crop response and frequency of application are also discussed. Interactions between boron and other nutrients receive attention. The chapter then considers zinc content and zinc deficiency in soils and examines the influence of pH, phosphate level, organic matter and adsorption by clay minerals on zinc availability. Methods, timing and rates of zinc application and crop responses are presented to support effective micronutrient management.

Probability analysis measures the likelihood of uncertain climatic and agricultural events. It is particularly useful for assessing rainfall occurrence, drought, floods, heatwaves, cold events and other risks that cannot be predicted with complete certainty. This chapter introduces classical, empirical, subjective and conditional probability, probability distributions, return periods and recurrence analysis. It explains how historical climatic records can estimate the likelihood and severity of future events. These methods assist in crop selection, sowing decisions, irrigation planning, infrastructure design and weather-risk management. By converting uncertainty into measurable probabilities, the chapter provides a scientific basis for climate-informed agricultural planning, disaster preparedness and development of resilient farming systems.

This chapter explains how workplaces and equipment can be designed to improve functionality, comfort, safety and productivity. It presents fundamental principles for arranging work areas, selecting layouts and adapting workstations to the physical dimensions and capabilities of users. Work-simplification techniques, process charts, motion-economy principles and task-analysis methods are introduced as tools for eliminating unnecessary effort. The chapter also examines energy expenditure, worker comfort and environmental conditions such as lighting, temperature, humidity, ventilation, vibration and noise. Human–machine interfaces, controls and information displays are discussed to show how intuitive design can reduce errors. The overall emphasis is on fitting workplace systems to their users.

Artificial Intelligence (AI) is becoming an important tool for addressing complex challenges in plant science and agriculture. This chapter introduces the fundamental concepts, methodologies and emerging paradigms of AI applied to plant research. It discusses machine learning, deep learning, convolutional and recurrent neural networks, and transformer architectures, with applications in plant phenotyping, disease diagnosis, genomics and precision agriculture. Different data modalities, including imaging, LiDAR, remote sensing, genomic sequences and metabolomics, are examined. The chapter also considers transfer learning, data augmentation, explainable AI, graph neural networks, federated learning and multimodal AI, together with challenges, ethical issues and future research directions

9.1 Introduction
In the preceeding chapter, we have studied the estimation part of statistical decision (inference) infered about the parameters of the population on the basis of information available in the sample observations drawn from the parent population under study. In the present chapter we discuss the problems related with the tests of statistical hypothesis and its significance about the population parameters under study. For understanding of the subject matter considered in this chapter, very clearly and easily, one must be familier with the statistical terminologies used in the subject matter. Hence we discuss the various notable terminologies with some suitable examples in a simple way for better understanding.

Abstract

While harnessing the benefits of genetically modified (GM) crops, in terms of increased yield, better nutritional quality and resistance to biotic and abiotic stresses, it is important to undertake biosafety and risk assessment studies in a systematic manner to allay the concerns of their impact on the environment and especially on the genetic diversity. Since Bt cotton is the only commercialized GM crop in India, this paper reports on the monitoring of unintentional introgression of transgene(s)/ regulatory elements of four commercialized Bt cotton events, covering 99.5% of the area under cultivation, in 180 ex situ cotton accessions conserved in the National Gene Bank at National Bureau of Plant Genetic Resources (NBPGR), New Delhi, using polymerase chain reaction (PCR)-based assays. Based on the real-time event-specific and conventional transgene-specific PCR assays, no amplification signals specific to two major Bt cotton events MON531, MON15985; transgenes/markers/ regulatory elements of 4 widely cultivated commercialized Bt cotton events, i.e., cry1Ac, cry2Ab, marker genes, i.e., nptII (neomycin phosphotransferase), aadA (aminoglycoside-3’-adenyltransferase) and uidA (?-D-glucuronidase) marker genes, CaMV35S, nos (nopaline synthase) promoters and nos terminator were detected in any of the cotton accessions. The study shows that the cotton accessions conserved in National Gene Bank are GM free and the study can be used as a model for monitoring the adventitious presence of unintended mixing of cotton seed during seed production or harvesting in Bt cotton growing states of India. On similar lines, adventitious presence of transgenes can be checked in ex situ collections of different crops conserved in the genebanks.

Abstract

Camelids across the world are reared for milk, meat, draught, race and tourism. Camelids are also the source of world’s finest natural fibre. They are distributed in the South American, African, Arabian and Asian countries. Apart from this a feral population exists in Australia and recent reports indicate that a few animals of the species are also being reared in Europe. Camel (Camelus dromedarius) is the predominant species of the camelids. The world camel population shows an increasing trend with 12.92 m in 1961 to 26.63 m in 2011 producing 0.42 m tonnes of meat and 2.11 m tonnes of milk per annum. The top 20 camel rearing countries produce both milk and meat with the exception of India and Pakistan as per FAO data. There are about 83 populations of the dromedary camels in the world spread mainly across African and Asian countries. There are about 3.04 m Alpacas in world with Huacaya and Suri as the two main populations and 3.24 m Llamas with Chaku and Kara as the two main populations. The Guanaco population in the world is about 0.5 m and that of Vicuna is 0.35 m. The wild Bactrian camels are around a thousand but the domesticated Bactrian camels are about 0.6 m. The Alpaca and Bactrian camel genome has been sequenced whereas the expressed sequence tags of the Dromedary are available in the public domain. A brief account of evolution, present status and conservation of camelids is discussed.

INTRODUCTION

Rajasthan is the largest state of the country with a geographical area of 342,239 Km₂ which constituents 10.41% area of the country. The state can be divided into four major regions; the Western desert with barren hills, level rocky and sandy plains; the Aravalli hills running south west to north-east; eastern plains with rich alluvial soils; and south-eastern plateau. The state has varied climate from semi -arid to arid. The average rainfall in the state ranges from 480 mm to 750 mm, being as low as 150 mm in arid region and 1000 mm in south-eastern plateau (FSI 2009). The recorded forest area is 32,639 Km2 which is 9.54 % of the state’s geographical area. The maximum forests are found in the Districts of Alwar, Banswara, Baran,, Bundi, Chittorgarh, Dhaulpur, Dungarpur, Jhalawar, Kota, Rajasamand, Swaimadhopur, Sirohi and Udaipur. The hot arid and semi-arid regions in the country accounts for 20 % of the country’s geographical area spread over seven states namely Rajasthan, Gujarat, Andhra Pradesh, Punjab, Haryana, Karnataka and Maharashtra. It comes nearly 31.63 m ha out of which 19.61 m ha alone is in the states of Rajasthan (62.00 % of total arid region). This area is characterized by low erratic rainfall, high temperature and wind velocity, coarse textured soils with low organic carbon and soil fertility status and poor water holding capacity. The underground irrigation water is limited and highly saline in most of the cases (Chandra 2005). Mono-cropping is a gamble in arid tract of Rajasthan due to low and erratic rainfall and frequent occurrence of drought during crop growth period leading to complete crop failure. To avoid complete crop failure the farmers are adopting mixed cropping system from very ancient time. But the system is not perfect during the adverse climatic situation due to low yield, long duration of traditional varieties and unmatched crop combinations. Therefore, in mixed or multi cropping system, the choice of drought hardy, short duration varieties of crops are necessary to ensure the production of crops even under adverse situations. It has been seen that drought occurrence during month of July and August leads to 67-100 percent decrease in production of pearlmillet and short duration pulses which are the main crops of the region grown under rainfed condition.
The people in arid regions of India, since time immemorial has developed location specific agroforestry systems. The scattered trees /shrubs in the agricultural fields are common features of the landscape. Since the beginning of cultivation the farmers deliberately allowed the trees/shrubs to grow with crops. These trees provided them insurance during drought years and provided fodder, fruits, vegetables, timber, fuel, fiber etc. during lean period.

Abstract

The completion of large number of genome sequencing projects has generated large volumes of raw sequence data. One of the fundamental tasks in bioinformatics is the creation of databases for data storage and development of tools for analysis. The first plant genome to be completed is that of Arabidopsis thaliana in 2000^[49]. This was followed by the rice genome and others. The availability of complete genomes has provided us with an opportunity to analyze them and understand plant biology in a holistic way. It has enhanced our understanding of factors affecting plant growth and development, abiotic and biotic stress, disease resistance, host pathogen interactions amongst others.

Abstract

Mitochondrial (mt) genomic study may reveal significant insight into the molecular evolution and several other aspects of genome evolution such as gene rearrangements evolution, gene regulation, and replication mechanisms. Other questions such as patterns of gene expression, mechanism of evolution, genomic variation and its correlation with physiology, and other molecular and biochemical mechanisms can be addressed by the mt genomics. Rare genomic changes have attracted evolutionary biology community for providing homoplasy free evidence of phylogenetic relationships. Gene rearrangements are considered to be rare evolutionary events and are being used to reconstruct the phylogeny of diverse group of organisms. Mitochondrial gene rearrangements have been established as a hotspot for the phylogenetic and evolutionary analysis of closely as well as distantly related organisms. This evolutionary episode has significant contribution among animals as well as plants and serves as an important genomic evolutionary event for the analysis of mitogenomes on large scale.

Abstract

Spices are aromatic substances of plant origin which are commonly used for flavouring, seasoning and imparting aroma in foodstuffs. They are cultivated in an area of 5.98 million ha globally with a total production of 7.31 million tons. India is considered as the home of majority of these spices from ancient times and sizable area of the country is under spice cultivation. The latest statistics shows that the total cultivated area in India under spices is 2.89 million ha with a total production of 3.33 million tonnes. About 109 plants belonging to 31 families are recognized as spices useful as ingredients in food. Many of them have been demonstrated to mediate therapeutic benefits for wide spectra of diseases ranging from multiple sclerosis to colorectal cancer.

Introduction

Advances in molecular genetics in the last 20 years like rapid DNA amplification techniques using PCR, rapid sequencing methods and computational software programs have enabled the placement of molecular markers on to the maps of chromosomes of most major crop species and the subsequent tagging of genes of interest by their placement near those markers^[38]. Unfortunately very little or scanty molecular data of spices are available in the public domain (Table 12.1). ‘Orphan crops’ like spices which have not yet received the investment of research effort or funding can exploit comparative genomics and bioinformatics to assist research and crop improvement provided they are related to a well-characterized model plant species.

Abstract

The study of palm genomics can aid to understand the genetic and molecular knowhow of all biological processes in palms that are vital tothe palm species. This knowledge will allow the path for the fruitful exploitation of palms as biological resources in the development of new cultivars of improved quality and with shortened economic and environmental costs. This knowledge is also vital for the development of new diagnostic tools. Traits considered of primary interest are resistance to pathogens and abiotic stress, fruit quality and yield. Genomics and bioinformatics approaches helped in unraveling the genomes of economicpalsm like coconut, oilpalm and datepalm. The genome characteristics and tools for genome analysis are provided in the chapter. Due to the economic importance of cocoa, many scientific research studies (genome, EST, transcriptome) have been carried out in the past years in this crop also.

Introduction

Plantation crops constitute a large group of crops. The major plantation crops include coconut, arecanut, oil palm, cashew, tea, coffee and rubber; and the minor plantation crops include cocoa (Prapulla and Indira, 2014). India is the third largest producer of coconut and goes in front of the ninety coconut-producing countries of the world (Richard 2013). India is the largest producer and consumer of cashew nuts (Mohod et al., 2011.). India also occupies number one position in arecanut production (Dwivedi et al.,2008) besides being the largest tea producers in the world. While Coffee is the second largest traded commodity in the world, it has, in recent times become an extremely important foreign exchange (Prapulla and Indira, 2014).

Indian agriculture is predominantly a rainfed agriculture under which both dry farming and dry land agriculture is included. Dry farming was the earlier concept for which amount of rainfall (less than 500 mm annually) remained the deciding factor for more than 50 years. In modern concept, dry land areas are those where the balance of moisture is always on the deficit side. In other words, annual evapo-transpiration exceeds precipitation. In dry land agriculture, there is no consideration of amount of rainfall. It may appear quiet strange to a layman that even those areas which receive 1100 mm or more rainfall annually fall in the category of dry land agriculture under this concept. The success of crop production in these areas depends on the amount and distribution of rainfall, as these influences the stored soil moisture and moisture used by crops. The amount of water used by the crop and stored in the soil is governed by the water balance equation: ET = P-(R+S). When the balance of the equation shifts towards right, precipitation (P) is higher than ET, so that there may be water logging or it may even lead to run off (R) and flooding (S). On the other hand, if the balance shifts to the left, ET becomes higher then the precipitation, resulting in drought in the various severity. Taking the country as a whole, as per meteorological report, severe drought in large area is experienced once in 50 years and partial drought in five years while floods are expected every year in one part of the country or the other, especially during rainy season. In fact the balance of the equation is controlled by the weather, season, crops and cropping pattern. Out of 142 million ha of net sown area in the country, rainfed agriculture is practiced in 95 million ha (67%). Nearly 67 m ha of rainfed area falls in the mean annual precipitation range of 500-1500 mm.

Introduction

Ruminants are provided with a microbial ecosystem in the gastro-intestinal tract which helps in the bioconversion of lignocellulosic feeds into volatile fatty acids which are utilized by the animal as a source of energy. This microbial biomass is also helpful in synthesis of microbial protein and B-complex vitamins for the host animals. Any disturbance in the microbial balance may affect the performance of the animal adversely and any improvement in the microbial environment may lead to the improvement in productivity of the animal. A number of chemical feed additive like hormone, antibiotics have been used to improve the performance of the animals. But due to residual left over in the animal products and risk of creating disease, resistance against antibiotics, the use of these chemical feed additives have been discouraged and even banned in some countries. As an alternative microbial feed additive seems to be more natural; as it is not creating any new thing in GIT but it is merely restoring the normal and ideal flora in the digestive tract to its full capacity.

Introduction

The process of making the rumen of animals free of rumen protozoa is called defaunation and the animal is called defaunated animal. The role of rumen ciliate protozoa on the performance of host animals became debatable issue when Becker and Everett (1930) demonstrated that rumen protozoa were non-essential for growth in lambs. Nevertheless, the reports of recent years reflect that though protozoa may be non essential for ruminant, still they have significant role to play in the rumen metabolism specially to stabilize the rumen pH (Santra and Karim, 2002a). Rumen protozoa are the largest in size among rumen microbes and contribute 40-50% of the total microbial biomass and enzyme activities in the rumen (Agarwal et al., 1991).

Introduction

While world population is expected to increase from 6 billion to about 8.3 billion, India is likely to be the most populous nation with 1.6 billion in the year 2030. Therefore, it is essential to be prepared to produce sufficient food for the increased population with the application of newer technologies. The consumption of animal food was 10 kg/yr in the 1960s increasing to 26 kg/yr in 2000 and is expected to be 37 kg/yr by 2030 (FAO, 2008; 2009). Large increases in per capita and total demand for meat, milk and eggs are forecast for most developing countries for the next few decades (Delgado et al., 1999). In developed countries, per capita intakes are forecast to change slightly, but the increases in developing countries, with their larger populations and more rapid population growth rates, will generate a very large increase in global demand.

Moreover, an increasing number of consumers demanding healthy and quality foods have pushed researchers into development of technologies that can control the proportion of lean and fat muscle deposition in meat producing animals. A number of technologies have been developed that led to remarkable improvements in the efficiency of animal production and in carcass composition and meat quality. There are some dietary additives and vitamins that may increase protein and muscle deposition, while often simultaneously reducing fat deposition by modifying nutrient metabolism in individuals.

Weeds pose serious problems to agriculture and environment. Weeds are plants that are undesirable to human activity at a particular time and place, and therefore, weeds will always be associated with human endeavours. In agriculture these not only cause huge reductions in crop yields but also increase cost of cultivation, reduce input efficiency, interfere with agricultural operations, impair quality, act as alternate hosts for several insect pests, diseases and nematodes. In non-crop areas, they affect aesthetic look of the ecosystem as well as native biodiversity and health and quality of life. Weeds are a big constraint in crop production and are responsible for heavy yield losses in almost all the crops. “Being fore-warned is fore-armed” is the principle behind preparation of perspective plans. Weeds are big constraints in crop production and are responsible for heavy yield losses in all crops. Out of the losses due to various biotic stresses, weeds are known to account for nearly one third. Proper management of weeds is essential to meet the growing demand of foodgrains, pulses, oilseeds and other crops by the ever increasing population. As per the projections of IFPRI, Washington there is a likelihood of shortfall of 41 per cent in the food grain production in the country by 2020.

Fungi include a large group of organisms and there are about 72,000 described species and the total number of species in the world may be as high as 1.5 million (Hawksworth et al., 1995). The infections that these fungi cause on a group of organisms viz. plants, animals, insects etc. may or may not be beneficial depending upon the type of host infected. With reference to insects, fungal infections in pest insects are beneficial which can be used effectively in biocontrol programmes. On the other hand, fungal infections in beneficial insects are harmful.

The entomopathogenic or entomogenous fungi mainly include those genera of fungi that associate with insects and some arthropods in a variety of ways. The association with the insects may be saprophytic, commensalistic, parasitic or pathogenic with the insect host. Some entomopathogenic fungi like Coelomomyces are obligate pathogens which can’t be cultured outside a living host, but most of them are however, facultative pathogens capable of growing without host insect. More than 750 spp of fungi, mostly deuteromyctes and entomophthorales from about 100 genera are pathogenic on insects and many of them offer great potential for pest management. The entomopathogenic fungi which have been most intensively investigated include Beauveria, Metarrhizum, Paecilomyces, Entomophthora, Verticillium, Hirsutella, Eryina, Mefarrhizium etc. Out of them Beauveria and Mefarrhizium have been extensively used in large scale for the control of several crop pests.

Introduction

According to an estimate by World Health Organization (WHO), about one million cases of pesticides poisoning and 20, 000 deaths occur every year due to pesticide residues in food chain including cereals, pulses, vegetables, fruits, oils, milk and milk products (including mother’s milk), fishes, poultry, meat and water. At global level, chemical pesticide worth US$ 30 billion is being used annually for the management of diseases and insect pests. In spite of this, epidemics of diseases, infestations of insect pests and colonization by weeds results in significant losses in agriculture production worldwide. As a result of crop improvement programs to incorporate resistance to pests, devastations epidemics and infestations are rare. Nevertheless, pests continue to exert a heavy toll in terms of yield losses. The last global estimate of yield losses due to pests, made crops like rice, wheat, maize, cotton, soybean, barley and coffee were equivalent to approximately US $ 250 billion annually during the period the period 1989-1990 (Table 1). Since these eight crops occupy only half of the global cropped area, yield losses due to all pests on all crops would be much high. The estimates indicate that 42 per cent of the total global attainable production of the eight major crops is lost due to pests, of which 16, 13 and 13 per cent losses are due to insects, diseases and weeds, respectively. Post harvest losses are estimated to cause an additional 10 per cent loss. Developing countries incur higher losses than industrial countries. (Table 2).

The World Trade Organization (WTO) is an international organization designed to supervise and liberalize international trade. It was established on 1^st January 2005 and is responsible for making and enforcing rules for trade between nations. WTO marks a major change in global trade rules. As an organization, it replaces the General Agreement on Tariffs and Trade (GATT), which had been in existence since 1947. The Eighth Round of Multilateral Trade Negotiations under GATT, which started in Uruguay in 1986, was concluded in 1994, leading to the creation of WTO as the new permanent international trade organization. The role of WTO is much more extensive than that of GATT, which dealt with trade in goods. Apart from goods, the two other broad areas that WTO covers are services and intellectual property, which previously belonged to the domestic domain. Accordingly, WTO administers not only the Multilateral Trade Agreements (MTAs) in goods but also the General Agreement on Trade in Services (GATS) and the Agreement on Trade Related Aspects of Intellectual Property Rights (TRIPS), which came into existence with WTO. All the agreements annexed to the Agreement establishing the WTO were signed as part of a package deal. Member countries did not have the option of choosing some and rejecting others. Another important difference with the erstwhile GATT is that WTO has a stronger compliance mechanism than did GATT-a member’s failure to meet the obligations can invoke retaliation across agreements and sectors.

Introduction

Fish production in aquaculture has increased dramatically over the last 20 years with an increment of 9-10% per year over the last decade. Microbial disease problems are prevalent in aquaculture as in any other intensive animal or plant production sector. Vaccines are used as disease prevention and can be very effective, however, they do not work at all developmental stages of fish or in all species. Therefore, antibiotics play a major role in control of fish bacterial diseases, although serious concerns have been raised with respect to development of antibiotic resistance and its transfer to human pathogenic bacteria. Also, new EU regulations call for specific license for antibiotic use in aquaculture and this is too costly even for fish farmers.

The urgent need for development and application of non-antibiotic disease control measures has led to research in probiotic organisms. Probiotics are “live microorganisms which when administered in adequate amount, confer a health benefit on the host (FAO/WHO 2001)” and the principle is most widely known from the belief that ingestion of high numbers of lactic acid bacteria (fermented foods) can control human pathogenic organisms in the intestine. Fish pathogenic agents, however, can invade via skin and gills and probiotic organisms may therefore be as efficient if applied to the outer environment of the fish.

Introduction

In this computer age software plays a vital role in speeding up the research activity. Software and databases help in storage, processing and accessing large volumes of information. Software helps to retrieve right information at the right time at the right place for the right purpose. The time of researchers is very precious. Instead of spending it in monotonous and tedious tasks, it could be used more effectively for new findings. With the advent of computer and its softwares, this problem could be overcome to a considerable extent.

Software is a set of instructions given to the computer to perform certain tasks. In this era of information technology, its essential to apply different softwares to speed up the research activity. It is therefore, utmost importance to have information about the different software already developed in the area of fisheries/aquaculture worldwide. Almost all the routine tasks which the scientists or the farmers are doing, could be automated in the areas like financial & economic analysis, development planning and project appraisal, facility design, management planning and production forecasting, facility construction, management decision support and record keeping, disease diagnosis and treatment, environmental regulation and aquaculture databases. FAO, World Fish Centre and other International Research Organisations have contributed software and database development in the area of aquaculture (Anon, 1999; ICLARM, 1998; FAO, 1999; Erist, 1998). In India also initiative to develop software and database has been taken up. Preliminary report on the availability of fishery related software and databases are available (Roy, 2000). In this communication, an attempt has been made to list softwares and databases that may be used in fisheries and aquaculture research and development/activities.