eChapters

Introduction

Rice (Oryza sativa), the staple food of more than half of the population of the world, is an important target to provide food security and livelihoods for millions. As a major producer and exporter of rice in the world, India reportedly produces around 152.60 MT tonnes of rice per year. When cereal crops are harvested, it is estimated that half of the process ends with agricultural waste or crop residue as straw. It is a non-edible product, often left in the field after harvesting. Traditionally, paddy straw was seen as a versatile by-product of rice cultivation because it was used in many ways including fodder for livestock and as a building material. However, the increase in productivity and area under cultivation of rice has led to a huge production of rice straw. Moreover, mechanization decreased the animal dependency and hence the feed requirement. So the most effective way of disposing of the residue is seen as burning of biomass in the paddy field. It is important to mention that open field burning is a widely practiced method all over the world however its intensity varies. For instance (National Conference, 2017) estimated that less than a quarter of rice straw is probably burnt in India compared to around half in Thailand whereas the entire residue is burnt in the Philippines. Taking farmers view into account, burning is not only a cost-effective method but it acts as an effective pest control procedure Shukla et al (2005). The short term effects of burning seems more desirable than those from soil incorporation due to the immobilization of inorganic nitrogen which occurs in the latter and can adversely affect productivity in the short term (Singh and Singh, 2001). Also, it helps to reduce diseases that may occur due to reinjection from inoculums in the straw biomass Haysa et al. (2005).The burning of rice crop residue causes atmospheric pollution by emitting trace gases which forms ‘Black Cloud’ adversely affects human health as well as environment. The air pollutants are also a hazard to people’s health particularly to those within local proximity to paddy areas. It is clear from Table 1 that crop residue is a good source of nutrients and important component for the stability of agricultural ecosystems. About 40% of the N, 30-35% of the P, 80-85% of the K and 40-50% of the S absorbed by rice remain in the vegetative parts at maturity.

Traditional media channels have served as the backbone of agricultural communication in India for decades, playing a crucial role in disseminating information about farming practices, government schemes, and technological innovations to rural communities. These conventional platforms, including radio, television, print media, and community-based communication methods, continue to remain relevant and effective for promoting natural farming practices, despite the emergence of digital technologies. Understanding the strengths, limitations, and optimal utilization strategies for traditional media is essential for developing comprehensive communication programs that can reach diverse farming populations across various geographical and socio economic contexts. Radio broadcasting represents one of the most successful and enduring traditional media platforms for agricultural extension in India. All India Radio (AIR) has been actively playing a unique role in bridging the digital divide and supporting agricultural extension programmes in India since the experiment in 1952-53 with ‘An Indian Experiment in Farm Radio Forums’ at Poona (now Pune). The effectiveness of radio stems from its accessibility, affordability, and ability to reach illiterate farmers who may face barriers with text-based information sources. Radio programs dedicated to agriculture have evolved significantly from simple one-way

It is a tufted aromatic perennial herb with fibrous roots, erect over 2 m tall, with smooth leaves and bearing a large inflorescence.

Origin: The origin of citronella is Sri Lanka

It is a perennial grass about 2 to 3m tall with profuse tillering habit having linear lanceolate leaves. The inflorescence is a highly branched terminal panicle.

Origin: The origin is India

Mints are a group of perennial herbaceous plants, belonging to the family Lamiaceae: Labiatae, which yield essential oil on distillation. The various species of mints which are commercially cultivated in different parts of the world are: Japanese mint or corn mint or field mint (Mentha arvensis subsp haplocalyx Briquet var. Piperscens Holmes var. Javanica), peppermint (M. Piperita L.) spearmint or garden mint or lamb mint (M. spicata L.) and bergamot mint or orange mint (M. citrata Ehrh.)

Introduction

Medicinal and aromatic plants constitute a major segment of the flora, which provides raw materials for use in the pharmaceuticals, cosmetics, and drug industries. The indigenous systems of medicines, developed in India for centuries, make use of many medicinal herbs. These systems include Ayurveda, Siddha, Unani, and many other indigenous practices. More than 9,000 native plants have established and recorded curative properties and about 1500 species are known for their aroma and flavour. In one of the studies by the World Health Organisation, it is estimated that 80 per cent of the population of developing countries relies on traditional plant based medicines for their health requirements (WHO 1991). Even in many of the modern medicines, the basic composition is derived from medicinal plants and these have become acceptable medicines for many reasons that include easy availability, least side effects, low prices, environmental friendliness and lasting curative property. India and China are the two major producing countries, having 40 per cent of the global biodiversity and availability of rare species. These are well known as the home of medicinal and aromatic crops that constitute a segment of the flora, and provide raw materials to the pharmaceutical, cosmetic, fragrance, flavour etc. industries.

Introduction

Medicinal plants are considered as rich ingredients resources which may be utilized in medicines development pharmacopoeia, non-pharmacopoeia or synthetic industry. Apart from any region, these plants play a critical role within the development of human cultures around the whole world. Plant is a crucial source of drugs and plays a key role in world health. Medicinal herbs or plants are known to be a critical potential source of therapeutics or curative aids. The utilization of medicinal plants has attained a commanding role in health system all over the place the planet. This involves the utilization of medicinal plants not just for the treatment of diseases but also as potential material for maintaining healthiness and conditions. Many countries within the world, that is, two-third of the world’s population depends on herbal medicines for primary health care. The explanations for this are often due to their better cultural acceptability, better compatibility and adaptableness with the physical body poses lesser side effects. Evidently, records showed that most of the used drugs contain plant extracts. Some are containing active ingredients (bioactive components or substances) obtained from plants. Through recent researches, it revealed that plant-derived drugs were mostly discovered from the study of curative, therapeutic, traditional cures and above all the folks knowledge of indigenous people and a few of those claims and believe of individuals are irreplaceable despite the recent advancement in science and technology. A number of the drugs believed to be obtained from plants are aspirin, atropine, artimesinin, colchicine, digoxin, ephedrine, morphine, physostigmine, pilocarpine, quinine, guanidine, reserving, taxol, tubocurarine, vincristine and vinblastine. The importance of medicinal plants can’t be taken lightly; therefore, it’ll be of significance to look at the characteristics and roles of photochemical in a number of the medicinal plants commonly utilized throughout the world.

India is known to be rich source of medicinal plants since ancient time. Medicinal plants like Aloe vera, Aswagandha, basil, mint, cinnamon, etc. are widely used to cure various ailments and for several health benefits. Some of the common diseases like common cold, headache, stomach problem, skin disease, etc. are treated in home by use of various herbs. Medicinal plants can be grown in the backyard or on the rooftop to meet the household demand. Cultivation practices of some of the medicinal plants are described in this chapter.

Tulsi

Tulsi or basil is considered to be a sacred plant with religious importance. It is grown in homes as an aromatic perennial shrub and used for medicinal purpose. Tulsi possess antimicrobial and antiviral properties with capacity to purify the air. It can be grown up to an altitude of 2000 m above mean sea level. This plant can be grown in pots and in home gardens. The leaves and twigs of the plant are used for medicinal purpose. The fragrant leaves and flowers are used in the form of tincture, tea or decoction for curing cold & cough, stomach disorders, skin diseases, etc. The plant is also rich in antioxidant, vitamin and calcium. There are two types of tulsi viz. green type and purple. It can be planted in the pots or in the beds.

8.1 Medicinal use of Bamboo in Cattle: The important parts of bans (Bambusa arundinacea) used are the leaf and stem, which contain choline, betain, nuclease, urease, cyanogenetic and glucoside. The leaf acts as an emmenagogue, stimulant, astringent, febrifuge, echbolic, and diuretic. It also acts against leprosy, tympany/bloat, diarrhea, retained placenta, threadworm, cough, and cold in horses. Flowering occurs once in ten to twelve years. The plant dries after flowering. (Parabia et al., 2000).

8.2 Medicinal uses of Dendrocalamus Strictus: The leaf and other parts of kaban (Dendrocalamus strictus), which contain siliceous matter, are used as astringent and ecbolics in animals. (Parabia et al., 2000).

8.3 Medicinal uses of Datura metel, D. alba, D. fastuosa: The leaf, root, fruit, and ripe seed of sadah datura (Datura metel) contain alkaloids such as hyoscyamine, hyoscine, atropine, scopalamine, allantoin, and vitamin C. They are used for treating insanity, fever with catarrh and cerebral complications, and the fruit is used to induce heat in animals and treat prolapse of uterus/ vagina. (Parabia et al., 2000).

8.4 Medicinal uses of Dalbergia Sissoo: The stem bark, root, leaf, and mucilage of sisam (Dalbergia sissoo) contain tannin, dalberginone, dalbergin, allylphenol of latitontype, 5,7,4-trihydroxy-s-methoxyisoflorone, and are used for leprosy, boils, eruptions, to allay vomiting, and the oil is used for cutaneous afflictions. Mucilage of leaves mixed with sweet oil is applied in excoriations. (Parabia et al., 2000).

8.5 Medicinal uses of Cyperus Rotundus: The tubers of motha mutha (Cyperus rotundus) have essential oils, myristic and stearic acid, unstable alkaloid, b-seilinne, cyperenone, and are used as diuretic, emmenagogue, anthelmintic, stimulant, tranquilizer, and antipyretic. (Parabia et al., 2000).

Introduction
Plant breeding involves the application of natural and artificial selection to create heritable variations and novel combinations of alleles in plants, aiming to identify those with new and useful properties. The primary goals of plant breeding are to develop crop varieties with unique and superior traits for various agricultural applications. Commonly targeted traits include tolerance to biotic and abiotic stresses, high grain or biomass yield, end-use quality characteristics such as taste, and specific concentrations of biological molecules (proteins, sugars, lipids, vitamins, fibers). Additionally, ease of processing (harvesting, milling, baking, malting, blending, etc.) is often a key consideration. The specific goals of a plant breeding project are highly dependent on the intended market for the product. For instance, in wheat, varieties bred for high gluten protein content are used for making noodles and breads, while varieties selected for low protein content are used for pastry flours. Similarly, grape varieties are developed with varying chemical compositions to suit different applications such as juices, red and white wines, and jams.
Plant breeders utilize various techniques to enhance the genetic composition of crops, with successful strategies depending on the plant’s physical, physiological, and hereditary characteristics. Different breeding approaches are needed for self-pollinating, cross-pollinating, and clonally-propagated plants. As human civilization has advanced, the methods used by plant breeders have evolved, incorporating humanity’s growing understanding of genetics.

Mentoring represents a developmental relationship between a more experienced individual and a less experienced person, characterized by guidance, support, and knowledge transfer that facilitates personal and professional growth. The word “mentor” originates from Homer’s epic poem “The Odyssey,” where Mentor serves as a wise counselor and guide to Telemachus during Odysseus’s absence. This classical reference captures the essence of mentoring as a relationship built on wisdom sharing, guidance provision, and developmental support that extends beyond mere instruction or supervision.

Contemporary definitions of mentoring emphasize its multifaceted nature as both a relationship and a process that serves developmental functions for mentees while often providing reciprocal benefits for mentors. Kram’s seminal work defines mentoring as a relationship between a young adult and an older, more experienced adult that helps the younger individual navigate the adult world and the world of work. This definition highlights the developmental and navigational aspects of mentoring while recognizing the experience differential that typically characterizes these relationships

15.1. Introduction

Meta-analysis is a statistical technique used to combine the results of multiple studies to produce a single, more precise estimate of the effect size of a particular intervention or association. It is a powerful tool in research, particularly in f ields such as medicine, psychology, education, and social sciences, where it is often necessary to synthesize evidence from numerous studies to draw meaningful conclusions. This chapter provides a comprehensive overview of meta-analysis, including its history, methodology, advantages, limitations, and applications.

15.2. Historical Background

The concept of meta-analysis dates back to the early 20th century, but it was not until the 1970s that the term was coined by Gene V. Glass. Glass defined meta-analysis as “the statistical analysis of a large collection of analysis results from individual studies for the purpose of integrating the findings” (Glass, 1976). Since then, meta-analysis has evolved significantly, with advancements in statistical methods and software making it more accessible and robust.

15.3. The Need for Meta-Analysis

15.3.1. Accumulation of Evidence

In many fields, particularly in medicine and psychology, a large number of studies are conducted on the same or similar research questions. However, individual studies may have small sample sizes, leading to low statistical power and inconclusive results. Meta-analysis allows researchers to pool data from multiple studies, increasing the overall sample size and statistical power, thereby providing a more reliable estimate of the effect size.

Surface-Enhanced Raman Spectroscopy (SERS) may detect and identify chemical and biological species ultrasensitively. Through localized surface plasmon resonance (LSPR) effects, metal nanostructures boost analyte Raman signals. This chapter covers current advances and essential principles in metal nanostructures for SERS chemical detection. It discusses SERS fundamentals and enhancing processes, such as metal nanostructure size, shape, and composition. Top-down and bottom-up processes including lithography, chemical synthesis, and self-assembly are used to create repeatable and controllable metal nanostructures. The complex interactions between light, metal nanostructures, and analyte molecules are best understood by combining theoretical modeling and experimental observations. 

7.1 Introduction
The preceding chapters have detailed the myriad ways in which meteorological data is collected, from direct in situ observations to various ground-based and space-borne remote sensing platforms. We have also explored the crucial aspects of data formatting, storage, and retrieval, recognizing the immense volume and diversity of atmospheric information. However, the journey from raw measurement to actionable insight is not complete without a critical intermediate step: data quality control (QC) and preprocessing. No observational system, regardless of its sophistication, is entirely free from errors, biases, or inconsistencies. Sensors can drift, communication links can suffer interference, environmental factors can contaminate readings, and automated systems can malfunction. Consequently, raw meteorological data often contains spurious values, missing records, or systematic biases that, if left unaddressed, can severely compromise the accuracy of weather forecasts, the reliability of climate analyses, and the validity of scientific research.
This chapter will delve into the essential processes of quality control, which involves rigorously identifying, flagging, and, where appropriate, correcting or removing erroneous data points. We will explore various automated and manual techniques employed to ensure the integrity and reliability of meteorological observations. Furthermore, we will examine preprocessing steps, which prepare the quality-controlled data for its intended use, including tasks such as unit conversions, interpolation to common grids, and handling of missing values. By understanding the meticulous procedures involved in data
quality control and preprocessing, we gain a profound appreciation for how raw atmospheric signals are transformed into the trustworthy information that underpins all of modern meteorology.

Meteorology is not merely the study of weather patterns; it is a critical science that intersects agriculture and allied sectors in numerous ways. In a world where food security is intimately tied to climatic variability, understanding the basic principles of meteorology is essential for both traditional farming practices and modern integrated food production systems. This chapter explores the foundational concepts of weather and climate, examines the atmospheric dynamics that directly impact agricultural systems, and contrasts historical meteorological practices with modern forecasting approaches. By delving into these topics, we can better appreciate how the environment influences agricultural productivity and how innovative meteorological tools can improve decision-making in the food production chain. Weather describes the state of the atmosphere at a specific time and place. It is the sum of short-term atmospheric conditions such as temperature, humidity, precipitation, wind, and visibility. In contrast, climate refers to the long-term average of weather patterns over a period of decades or more. Understanding this distinction is crucial for agriculture, as farmers and allied sector professionals must respond to immediate weather events (such as sudden frost or heavy rainfall) while also adapting to long-term climatic trends (like gradual temperature increases or shifting precipitation patterns).

Meteorological hazards are severe and extreme weather and climate events that occur in all parts of the world, although some regions are more vulnerable to certain hazards than others. Meteorological hazards include cyclones, droughts, floods, hurricanes, hailstorms, heat waves and tornadoes. The hazard is distinguished from an extreme event and a disaster. An extreme event is simply an unusual event; it does not necessarily cause harm. A disaster is an event that does cause harm in significant amounts. Meteorological hazards are often called as natural hazards. The natural hazards become natural disasters when people’s lives and livelihoods are destroyed.

Hydrological hazards are the result of either excess or a severe lack of water, i.e., flood or drought. Hydrometeorological hazard is a process or phenomenon of atmospheric, hydrological or oceanographic nature that may cause loss of life, injury or other health impacts, property damage, loss of livelihoods and services, social and economic disruption, or environmental damage. Human and material losses caused by natural disasters are a major obstacle to sustainable development. By issuing accurate forecasts and warnings in a form that is readily understood and by educating people about how to prepare against such hazards, before they become disasters, lives and property can be protected.

Meteorology is defined as the branch of science concerned with the processes and phenomena of the atmosphere. It is also defined as the climate and weather of a region. The word meteorology is derived from two Greek words: Meteor and logus. Meteor means event occurring above the earth surface and logus means to study. Meteorology is science deals with the physics, chemistry and dynamics of atmosphere and also their direct and indirect effects upon the earth surface, oceans and thereby life in general.

Climatology: Climatology is scientifically defined as weather conditions averaged over a period of time. Different regions of the world have different characteristic climates which determine the crops of any region. Climatology is derived from Greek word ‘klima’ – place/zone or slope of the earth and logs is study. It discovers, describes and interprets the climate on the basis of causes and long term effects on variation in regional and global climate. Climatology is the science which studies average condition of weather or the state behavior of the atmosphere over a place or region for a long period of time.

Agrometeorology: Agrometeorology is the study of weather and use of weather and climate information to enhance crop production. Agrometeorology is defined as the branch of meteorology that deals with relationship between weather and climate on crop, livestock production and soil management.

Abstract

Microorganisms that produce methane as their metabolic end product are known as methanogens. Methanogens are prokaryotic, unicellular, obligate anaerobes having fastidious growth requirements making them difficult to isolate and preserve. They catalyse the terminal step in anaerobic breakdown of organic substances. Even though methanogenic archaea or methanogens show very limited metabolic diversity, they are one of the most phylogenetically and ecologically diverse group of Archaea. Methanogenic community varies greatly with respect to temperature. Methanogens have been reported from permanently frozen habitats like permafrost to hyperthermophilic environments such as hydrothermal vents. However, the metabolic and phylogenetic diversity of methanogens in these habitats vary greatly. Methanogens are the biocatalysts, having the ability to provide a solution to help solve energy crisis by producing methane as storable energy carrier. Methane being a flammable gas, can act as a clean and renewable source of energy. The biogenic methane gas thus produced may serve as an efficient alternative for fossil fuels in the future.

Bacterial biofertilizers are supplied as carrier based inoculants. Peat or lignite is used as carrier material. Carrier based bacterial inoculants are applied by the following methods.

1. Seed treatment or seed inoculation.
2. Seedling root dip and
3. Main field application

Seed Treatment

One packet of the inoculant (200 g) 7is mixed with 200 ml of rice kanji to make a slurry. The seeds required for an acre are mixed in the slurry so as to have a uniform coating of the inoculant over the seeds and then shade dried for 30 minutes. The shade dried seeds should be sown within 24 hours. One packet of the inoculant (200 g) is sufficient to treat 10 kg of seeds.