eChapters

Introduction Technology is the application of knowledge and/or equipment in undertaking and accomplishing certain activity. Fisheries technology is a systematically organized knowledge and materials applicable to production problems to help to boost the present level of fish productivity and or extend the existing range of production. Fisheries technologies are wide range of importance; Technological innovation in aquaculture is leading an evolution in aquaculture practices, thereby reducing losses and increasing efficiency. Technology in aquaculture affects many areas of fishery, such as seed production, feed production and management, pest and diseases management, production, harvesting, marketing, processing, etc. Induced breeding technology in Indian Major Carps transformed the growth of aquaculture sector from traditional to intensive aquaculture practices and led to success of modern aquaculture industry. Mechanization in fishing increased the harvest with less time and minimal human drudgery. Fish processing technologies improved product shelf-life, reduced fish loss and added value to the products.

In previous section, we discussed about the concept of the reliability and its importance. In this section, we will discuss about different types of reliability and procedures for estimation of the reliability. We already discussed that one cannot measure the reliability but of course it can be estimated.

Lignieres and Spitz first isolated the bacteria from the cattle with Actinomycosis like condition in Argentina in 1902. They referred them as ‘Actinobacilllus’. These findings were also confirmed by Nocard in 1902. Latter, the isolated bacterium from the cattle was named as Actinobacillus lignieresii, in memory of Lignieres. 

Properties of genus

1.   Morphology :  Actinobacillus are gram negative small rods, measuring 1.5 µm in length and 0.4 µm in width, occurring singly, in pairs or more rarely in chains. After isolation in the laboratory they may show pleomorphism varying from coccobacilli to filamentous forms. In gram stained smear they may show both bacillus and coccus form together, known as ‘morse code’ appearance (dots and dashes appearance, Fig.1). They are non-motile (both at room temperature and 37^oC), non-sporing and non-acid fast. The pili are found in A. pleuropneumoniae.

      Some of them (A. pleuropneumoniae) are capsulated. Whereas, slime layer is found in the surface of other species like A. lignieresii, A. suis, A. equuli.  This slime layer is related with stickiness of the colonies in the agar, enhanced resistance of the colonies to the chemical disinfectants, as well as, resistance of the bacterial cell to the antibiotics and desiccation.

2.         Actinobacillus are aerobic, microaerophilic or facultative anaerobic in nature. They are chemoorganothrophic having both respiratory and fermentative types of metabolism.

RECRUITMENT 
Recruitment is the process of identifying the prospective employees, stimulating and encouraging them to apply for a particular job or jobs in an organization. It is a positive action as it involves inviting people to apply. The purpose is to have an inventory of eligible persons from amongst whom proper selection of the most suitable person can be made.

The Process of Recruitment
Before thinking of inviting people to apply for a job one has to decide what types of persons are to be invited and what their characteristics should be. This calls for fixing the ‘job specifications’ which may also be called ‘man specifications’. Job specifications are based on job description which is dependent upon the nature and requirements of a job. 

Thus, job specification will be different for each job. The various elements of job specification are:

Preliminaries

Section-A : Write True / False

Q.1 Statistics in singular is used to denote a subject (branch) of science.

Q.2 Statistics in plular is used to denote data or methods.

Q.3 The data first time collected is known as primary data.

Q.4 Primary data is collected from published report.

Q.5 Editing of data is not necessary.

Q.6 Consistency must be maintained in data.

Q.7 Baised and unbiased errors are known as statistical error.

Q.8 Arrangement of data in different, rows & columns is known as classification.

Planning

A greenhouse, is basically the purpose of providing and maintaining a growing environment that will result in optimum production at maximum yield. The agriculture in the controlled environment is possible in all the regions irrespective of climate and weather. It is an enclosing structure for growing plants, greenhouse must admit the visible light portion of solar radiation for the plant photosynthesis and, therefore, must be transparent. At the same time, to protect the plants, a greenhouse must be ventilated or cooled during the day because of the heat load from the radiation. The structure must also be heated or insulated during cold nights. A greenhouse acts as a barrier between the plant production areas and the external or the general environment.

Site selection and orientation

A greenhouse is designed to withstand local wind, snow and crop loads for a specific cropping activity. In this way, the structure becomes location and crop specific. The building site should be as level as possible to reduce the cost of grading, and the site should be well aerated and should receive good solar radiation. Provision of a drainage system is always possible. It is also advisable to select a site with a natural windbreak. In regions where snow is expected, trees should be 30.5 m away in order to keep drifts back from the greenhouses. To prevent shadows on the crop, trees located on the east, south, or west sides should be at a distance of 2.5 times their height.

Introduction

Nanopesticides are pesticides that use nanomaterials or nanotechnology to improve their effectiveness and safety in agriculture. Nanomaterials are materials that have at least one dimension between 1 and 200 nm. Nanomaterials have different properties than their bulk counterparts, such as higher surface area, reactivity, and mobility. Nanopesticides can be formulated in various ways, such as nanosized active ingredients, molecular active ingredient nanocarrier complexes, or active ingredients encapsulated or coated by nanomaterials (Deka et al., 2021; Xu et al., 2022).

Introduction

Minerals are present in all body tissues and fluids to carry out the physicochemical processes of life; both in animals and human. It is broadly classified into two categories: (1) macro and (ii) micro or trace elements. The macro elements include calcium, phosphorus, potassium, magnesium, sulfur, sodium and chloride, while elements such as iron, copper, cobalt, iodine, zinc, manganese, molybdenum, selenium and chromium come under micro elements. Animals need large amounts of calcium for construction and maintenance of bone and normal function of nerves and muscles. Phosphorus is a vital constituent of adenosine triphosphate (ATP) and nucleic acid and is also essential for acid-base balance, bone and tooth formation. Iron is an important component of the cytochromes for carrying out cellular respiration in addition to its vital role in red blood cells. Magnesium, copper, selenium, zinc, iron, manganese and molybdenum are important co-factors found in the structure of certain enzymes and are indispensable in numerous biochemical pathways. Animals need iodine to make thyroid hormones. Sodium, potassium and chlorine are important in the maintenance of osmotic balance between cells and the interstitial fluid. Excessive intake of some minerals can upset homeostatic balance and cause toxic side effects.

In this unit, we will explore the essential skills necessary for presenting radio and television programs in a way that ensures they are engaging, effective, and successful in communication. It is widely recognized that even a program with strong content and a well-crafted script can fail to achieve the desired impact if it is not delivered in an appealing manner. We will analyze the key qualities of an effective presenter and examine the process of refining a script before it is presented on air, whether through a microphone or in front of a camera.

Presentation Techniques for Radio

The overall impact of a radio program is determined by the script, production quality, and the manner of presentation. While it can be argued that presentation and packaging fall under production quality, it is crucial to recognize that in an aural medium, the choice of words in the script is just as important as their delivery. Therefore, radio producers must be equally adept at presentation techniques, as these can significantly influence the success or failure of the entire production.

Real time ultrasonography provides means to directly image the reproductive tract. An extensive amount of information can be gained from even a single examination, including determination of ovarian (luteal or follicle detection) and uterine status, detection and monitoring of ovarian and uterine pathology, monitoring the post-partum mare, detection of twins, prediction of ovulation, fetal growth and development and determination of sex of fetus. When first introduced the use of ultrasonography was primarily limited to early pregnancy diagnosis only, with advancement of knowledge and interpretive skills, the diagnostic ultrasonography has a much more application in reproduction. Some of the applications are discussed in this lecture.

Procedure

The procedure and precautions for intrarectal ultrasonographic examination are similar to those for rectal palpation, and no additional restraint is required. The transducer should be protected by the examiner’s hand to prevent trauma to the rectal wall, and the transducer should be well-lubricated. Care should be taken to avoid fecal material attaching to the transducer. After evacuating fecal material from the rectum, the probe is introduced and moved across the reproductive tract in the following pattern: uterine body, right uterine horn, right ovary, right uterine horn, uterine body, left uterine horn, left ovary, left uterine horn, uterine body then cervix. Good contact must exist between the transducer and rectal wall. Air in the rectum or a gas or fluid-filled loop of bowel will result in a distorted image. To minimize scanning errors, principally those of omission, it is recommended to conduct the same scanning procedure during each examination.

Greenhouses should provide a controlled environment for plant production with sufficient sunlight, temperature and humidity. Greenhouses need exposure to maximum light, particularly in the morning hours. Consider the location of existing trees and buildings when choosing your greenhouse site. Water, fuel and electricity make environmental controls possible that are essential for favourable results. For this reason, use reliable heating, cooling and ventilation.

The greenhouse temperature requirements depend upon which plants are to be grown. Most plants require day temperatures of 70 to 80 degrees F, with night temperatures somewhat lower. Relative humidity may also require some control, depending on the plants cultured. Some plants grow best in cool greenhouses with night temperatures of 50 degrees F after they are transplanted from the seeding tray. These plants include azalea, daisy, carnation, aster, beet, calendula, camellia, carrot, cineraria, cyclamen, cymbidium orchid, lettuce, pansy, parsley, primrose, radish, snapdragon, sweet pea and many bedding plants. Some plants grow best in warm greenhouses with night temperatures of 65 degrees F. These plants include rose, tomato, poinsettia, lily, hyacinth, cattleya orchid, gloxinia, geranium, gardenia, daffodil, chrysanthemum, coleus, Christmas cactus, calla, caladium, begonia, African violet, amaryllis and tulip. Tropical plants usually grow best in high humidity with night temperatures of 70 degrees F.

Statice, botanically known as Limoniumis very highly demanded ornamental plant. It is also known as ‘Sea Lavender’ owing to its color and place of growth. The genus name Limonium is from Greek name ‘leimon’ which translates to origin ‘a meadow’, most suitable as many species are found growing near marshy lands or salty areas of sea shore. The statice plants have very wide adaptability and can be seen growing under a wide range soil and climatic conditions like sea shores, marshy lands, deserts and plains etc. Statice figures in top 20 cut flowers sold worldwide but information on its trade, volume, export-import and number of stems sold etc. is not available. The reason for this may be attributed to classification systems, data collection categories and frequently changing nature of the assortments in the international flower market. Comprehensive trade statistics are difficult to locate for Statice. However, Statice figured in top 10 imported products in the Netherlands way back during 2013, 2014 and 2015. Though it is presently not among the top 10 flowers category, still it enjoys the immense popularity among the growers owing to its ease in cultivation and other characteristics. It is cultivated as annual as well as perennial crop, as different species have been domesticated for this purpose.

Elephants are the simple stomached animals and colon is associated with digestion, predominantly. Elephants are the herd animals (gregarious in nature) and belong to the matriarchal groups (Leader of herd is usually a cow elephant)

Introduction

Crop models can be broadly classified into two categories: dynamic or process-based crop simulation models (CSMs), and reduced form statistical models. Since simulation models are based on various plant-related processes, they develop or alter in tandem with plant growth (Chetty 2009); as a result, they are inherently nonlinear (Olmstead 2009). To run, calibrate, and validate, they require a significant amount of date input. However, statistical models are helpful in situations where there is a lack of data because they describe the relationships between a subset of variables while keeping the others constant. (Chetty 2009).

Introduction

The extension approaches followed in agricultural sector during past decade is reoriented in various occasions and new system of approaches were implemented. The present day orientation is shifting the efforts of extension from production orientation to profit orientation. Under these circumstances, the key factor for success will largely depend upon the extension service provider’s orientation and farmer’s capacity to absorb new knowledge of improved practices and technology. In order to orient officials towards this change HRD is essential. This will help them to impart required competencies in knowledge and skill such as technical, organisational, managerial, communication and business skills.

The present day extension approach i.e. ATMA focusing towards block level planning, farmers participation in planning and implementation of various schemes, group approaches, importance to agri and allied aspects are the major focus of ATMA. The Tamilnadu government in the year 2007 reorganised the extension system in to twotier at district level with the major focus to block level. In each block Agricultural Extension Centres (BAECs) were established which houses for agriculture, horticulture, marketing, agri. engineering departments.

Knowledge of structure is a basic element of biological research. Understanding structures of various degrees of complexity contributes to a better understanding of function, ontogenetic and physiologic processes, as well as phylogenetic relationships. In biological sciences, ultrastructure refers to the nanostructure of a biological specimen, such as a cell, tissue, or organ, at scales smaller than can be viewed with light microscopy. Electron microscopy (EM) has a great impact on our knowledge and understanding of ultrastructure.

Introduction

In India, Fruits and vegetables comprises nearly 90% of the total horticulture production. India is now the second largest producer of fruits and vegetables in the world and leader in several horticultural crops, namely mango, banana, papaya, cashewnut, arecanut, potato, and okra (National Horticulture Board, 2015). The total area occupied by horticultural crops in India was 23.69  million ha and total production was 283 million tonnes in 2015-16 (Source: Ministry of Agriculture and Farmers’ Welfare). Different horticultural crops like fruits, vegetables, spices, medicinal plants and plantation crops comprises a large chunk of the total crop sales value of the country and also secures nutritional security of the persons of the country. For systematic and efficient management of existing crops and to bring more area of the country under the cultivation of horticultural crops to increase overall horticultural production in term of time and area, a database must be created for decision making and planning. 

Classification of Vegetable Crops

Vegetables are defined as herbaceous plant origin product with no calorific value and providing micronutrients, vitamins, antioxidants, fibre and alkaline reaction inside human body. Vegetable crops are not only botanically different but also their cultural and climatic adaptation also shows wide variability. It is, therefore, necessary to classify the vegetable crops for their easy recognition. Vegetable crops can conveniently be classified “Botanically” for the purpose of vegetable breeding and according to “Method of culture” from the point of crop husbandry.

Botanical Classification

Botanical classification involves grouping of plants into kingdom, division, sub-division, phylum, sub-phylum, class, sub-class, order, family, genera, species, sub-species and variety. The broadest group in which vegetables are discussed is family. The genus and species constitute the scientific name. Scientific names are accepted worldwide and there cannot be any confusion as per their nomenclature. All vegetable crops belong to the division Angiospermae. The division Angiospermae has two classes: Monocotyledoneae and Dicotyledoneae.

The crops used for vegetable purpose in the world belong to 1200 species under 78 families and of them, more than 860 species under 59 families belong to dicotyledoneae and about 340 species under 19 families belong to monocotyledoneae. In the tropical and subtropical parts of the world, about 90 species of vegetable crops are cultivated, but hardly 25 of them are commercially important in terms of market demand, development of variety/hybrid and seed production. In the present botanical classification, over 140 different kinds of vegetable crops under 7 monocotyledoneae and 20 dicotyledoneae families have been included.

Due to their remarkable health benefits, such as their low glycemic index, rich amino acid profiles, and abundance of B vitamins and antioxidants, little millets, formerly hailed as nutri-cereals, are once again becoming important dietary staples. These crops, which include a variety of species like finger millet, foxtail millet, and barnyard millet, have stimulated innovation in the food business by producing value-added goods like rice analogs, noodles, and biscuits. Additionally, their medicinal qualities could help advance research on nutraceuticals. Small millets are essential to climate-smart agriculture because of their renowned resilience, which allows them to flourish on marginal soils and in difficult climates. Breeding efforts seeking to create climate-resilient, high-yielding, and lucrative cultivars can benefit greatly from their extensive genetic diversity, which is conserved in traditional landraces and farmer-managed cultivars. Even with their potential, small millets’ genetic development projects are still in their early stages, requiring concentrated efforts to find trait-specific donors and enhance breeding techniques. In addition to preserving their ethnobotanical and cultural heritage, the conservation of their genetic resources supports international initiatives for environmental sustainability and food security. Small millets have the potential to become a vital component of sustainable and nutritionally enhanced agricultural systems by incorporating cutting edge agricultural techniques and speeding up breeding improvements.

Introduction

Cassava is an important tuber crop in India grown in 2.7 lakh hectare area with a production of 71 lakh tonnes. The average yield of tapioca is 22 tonnes per hectare. Cassava is a richest source of starch (25 to 35%) mainly processed for starch and sago. Cassava is an industrial crop of Tamil Nadu occupies 32.97% of the area and 45.98% of the production in India. (Edison et al 2006). In Tamil Nadu major traditional tapioca growing districts are Salem, Namakkal, Erode, Cuddalore, Dharmapuri and Kaniyakumari mostly as rainfed. Among the districts Salem District stands first in area (27000 ha) and with the production of 10.475 lakh MT(Anonymous, 2006).