eChapters

1. Introduction

Pyrus malus Linn. commonly called as ‘apple’ in English and ‘seb’ in Hindi locally, is a well known tree belonging to family Rosaceae. It is indigenous to Europe and West Asia and grow wild in N.W. Himalayas and also cultivated. The leaves and young aerial parts are useful medicinally1. Leaves contain phloretin which is a natural antibiotic. Crushed leaves are used as temporary treatment for wounds. In Homoeopathy, its use is mentioned for labyrinthine vertigo by Dr. Cooper, in Boericke3.  The plant is a tree growing up to 20 to 40 feet, with spreading branches. The leaves are ovate or oblong ovate, serrate, 2-3’’ long; Petioles ½ to 1’’ in length. The flowers are large, fragrant, pale rose in colour and borne in sub umbellate corymbs. Fruit is a pome and edible.

Chemically the plant is  reported to contain patulin, campesterol, stigmasterol, b- sitosterol, nicotinic acid, phloretin 2- O-glucoside, phlorizin, Gibberellin A 62, melibiose, ostreasterol, 1,28-octacosanediol, pomonic acid and 1,24-tetracosanediol.

Most of the DNA of an living organism is packaged and organized in a chromosome as well as in mitochondria and cell organelles (Feulgen and Rossenbeck 1924). DNA is not found on its own but rather is structured in long strands wrapped around protein complex called nucleosome consisted of a protein called histone. During most of the duration of cell cycle a chromosome consists of long double helix DNA molecule (with associated proteins)During S phase the chromosome gets replicated resulting in X –shaped structure (chromatids) and still attached to a single centromere. The basic role of the chromosome is to provide a frame work which allows each linear segment of the genome to replicate and segregate efficiently. Failure in either of processes cause chromosome imbalance in daughter cells. Three specific cis-acting sites are required for stable chromosome maintenance, i.e., an origin of replication, a centromere and telomeres.

Classical studies of the morphologyof individual chromosomesof the plant species begun by S. Nawaschin 1910-16 and continued by Taylor (1925), Sharp (1929) and Mc Clintock (1929-30). And eventually it was possible to set up working models which account for the internal structure and chemistry of the chromosome and the genetic material as well as genetical facts. The use of aceto-carmine with iron (Belling, 1921) and application of heat greatly improved the staining differentiation of chromosomes. Smears have practically replaced the paraffin techniques of studying chromosome. The gross morphology of chromosomes is generally worked out either at prophase stages of meiosis or metaphase in somatic tissues. The chromosomes may differ in thickness, total length, position of centromere or spindle fiber attachment region, chromomere pattern and number and position of secondary constriction. The total length of chromosomes at metaphase also differs in different tissues of a species and also in certain tissues chromosome present may be very different in appearance. Figure 1 shows various morphological features of a eukaryotic chromosome

Introduction Rice cultivation is a means of livelihood for a large number of people from the state of Assam, India (Saikia, 2019). It is related to the cultural aspects in rural Assam where people indulge themselves in traditional as well as modern ways of farming. Like any other north-eastern states in India, rice majorly dominates the Assamese cuisine. It is the primary source of diet in Assam. There are more than 100 varieties that are genetically modified breeds in which indigenous varieties contribute to 20 germplasm (https://www.rkbassam.in/). The different rice varieties of Assam have different culinary applications in both savoury and sweet cuisines. The intermediate and high amylose rice, parboiled or nonparboiled are consumed as staple for major meals while the low amylose rice is mostly consumed as snacks, breakfast cereals and desserts. The major constituent of rice is starch consisting of about 90% of the mass. Thus, the major compositional changes occurring in rice is due to starch. Starch is a polymer of glucose linked by glycosidic bond. It consists of amylose (linked by alpha 1- 4 linear chains) and amylopectin (alpha 1-4 & alpha 1-6 branched chains). On the basis of composition, rice is classified as high amylose (>25%), intermediate amylose (20 -25%), low amylose (7-20%) and waxy or glutinous (1–2%) types (Juliano, 1979).

Introduction

Drought is defined as “when a region receives below average precipitation,  resulting in prolonged shortages in its water supply, whether surface  or ground water or atmospheric. It can have a substantial impact on the  ecosystem and agriculture of the affected region.” When drought arises in  a particular area, obviously it affects the crop and livestock production. In  order to reduce the effect of drought on farm productivity and to stabilize farm  income, farmers have to take some systematic measures, and such measures  are referred to as drought coping mechanisms. The objective of the study was  to identify the determinants of the adoption of drought-coping mechanisms to  balance and stabilize the farm income of the stakeholders. The study also helps  to know how to mitigate the effect of drought on farmer’s livelihoods.

The existing literature on the adoption of drought coping mechanisms is  quite meager. Akwango et al., (2016), Chandan Kumar Jha et al., (2017),  Emmanuella Ellis (2017), Ronald Twongyirwe et al., (2019) assessed the adoption strategies by considering multinomial logistic regression and the  results state that the use of different tree planting, crop varieties, soil and water  conservation, early and late planting, and furrow irrigation. The data related to  the adoption of any agriculture technology have qualitative response variables  with two or more categories. Most of the studies used qualitative response  models such as the logit model, probit model, and multivariate techniques like  discriminant analysis to measure the farmer’s perception toward the adoption  of any agriculture technology. In this study, we chose machine learning models  such as Decision tree, to assess the classification ability and to determine the  factors influencing adoption.

Role of Digital Technologies in Agricultural Extension

Digital technologies encompass a wide array of electronic tools designed to facilitate information processing, communication, transmission, and presentation. Scholars like Michiels and Van Crowder (2001) describe these technologies as transformative forces that can significantly alter organizational structures and social dynamics. In the agricultural sector, the integration of digital tools offers substantial benefits, from driving agricultural growth to empowering underserved farming communities. This review explores the necessity, benefits, scope, and challenges of digital technologies in agricultural extension, highlighting their potential in advancing sustainable rural development.

Importance of Digital Technologies in Agricultural Extension

Boosting Agricultural Development

Digital tools play a crucial role in advancing agricultural growth by providing timely and critical information, knowledge, and resources to farmers and stakeholders.

Expanding Knowledge Access:

These technologies serve as vast repositories of agricultural knowledge, giving extension workers and farmers access to comprehensive information on best practices, innovations, and market trends.

Enhancing Information Dissemination

Digital tools improve the spread of agricultural information and advisory services, enabling farmers to make informed decisions regarding crop management, pest control, and market opportunities.

Important Definitions

• Sampling method or sampling technique is the process of studying the population by gathering information (on basis of samples) and analyzing that data.

• Population: The whole group we are interested in census.

• Census: A collection of data from the whole population

• Sample: A collection of data from part of the population

• Parameter Vs Statistics: Parameter is statistical measure pertaining to population whereas statistics is measure pertaining to sample.

• Estimate-Value of population parameter obtained from sample.

• Livestock census carried every 5 years (2019-20th livestock census)

The most innovative member of a social system is frequently perceived as a deviant by average members and is often assigned a status of low credibility. Consequently, this individual's role in the diffusion process, particularly in persuading others to adopt an innovation, is quite limited. Other members of the system, known as opinion leaders, play a crucial role in providing information and advice about innovations to many individuals within the system.

Opinion leadership refers to the degree to which an individual can influence others' attitudes or overt behaviors informally and with relative frequency. This type of leadership is not derived from the individual's formal position or status within the system. Instead, it is earned and maintained through the individual's technical competence, social accessibility, and adherence to the system’s norms. When a social system is oriented toward change, opinion leaders tend to be more innovative. Conversely, when the system's norms resist change, the behavior of opinion leaders also reflects this resistance. By conforming to the system’s norms, opinion leaders serve as models for the innovation behavior of their followers, thus embodying and reinforcing the system's structure.

3.1 Introduction

The concept of nanoscience was first described in 1959 by physicist Richard P. Feynman in a lecture to the American Physical Society and it was Japanese researcher Norio Taniguchi who coined the term nanotechnology in 1974 to describe precision engineering with tolerances of a micron or less. Eric Drexler in 1986 in his book Engines of Creation, brought nanotechnology into the public domain.

3.1 What is environment ?

The word environment is derived from a French word “environne” means to encircle or surround. Environment is defined as the circumstances or conditions that surround an organism or group of organisms. It is also defined as the complex of social or cultural conditions that affect an individual or community. Since humans inhabit the natural world and they build social, cultural and technological world, all constitute important parts of our environment.

Orchids belong to family Orchidaceae, which is the most highly evolved among monocotyledons with over 800 genera and 35,000 species and over 74,400 natural and manmade registered hybrids. Orchid is the first horticultural plant cloned by tissue culture methods on a commercial scale (Goh, 1990). Rapid multiplication using tissue culture techniques is an important strategy for preserving the valuable orchid wealth in India. Vegetative propagation through division of rhizomes and separation of offshoots and keikis is very slow. Both these problems can now be successfully alleviated through micropropagation. The technique has revolutionized the orchid industry and now it is possible to multiply unlimited number of desirable clones. Rotor (1949) was the first to have employed tissue culture techniques to multiply Phalaenopsis, and since then micropropagation potential of a variety of monopodial taxa has been successfully tested.

1. Introduction

Inflammation have been linked with pathogenesis of many diseases like Cancer, Atheriosclerosis, Neurodegenerative diseases, Diabetes Mellitus, Obesity, Arthritis, Cardiovascular diseases, Parkinson’s disease and other deadly diseases (Lee and Weinblatt, 2001). Inflammation can result to genetic defects and immunoregulation and mechanism defects which lead to tissue damage (Jones, 2006). Anti-inflammatory drug was serendipity discovered without thorough investigation and even not effective in term of controlling inflammation and now record several side effect just like other synthetic drugs, thus, safe biological sources are now been considered. Biological sources for active compounds that have medical importance are increase in recent time (Kaboli, 2001). Also, due to the residual side effects of synthetic compounds that form bulk of the materials used for the production of pharmaceutical products. Aspirin can cause stomach bleeding, acetaminophen can cause liver damage Cox-2 inhbitor Vioxx and Celebrex can cause heart problem and non-steroidal anti-inflammatory drugs (NSAID’s) was reported to contribute to numerous death (Clegg et al., 2006; Wolf et al., 1999; Sing, 1998).

Care and Management of Commercial Growers (09-20 weeks) Under Deep Litter System

Grower management essentially remains the same as that of chick management (brooding management) except for the additional space required for floor, feeders and waterers to keep with the size of birds. The growers may be reared in separate grower-houses or continued to be reared in brooder-cum-grower houses.

Floor space: 1260 cm² (1.4 ft²) per bird.

Feeder space: 6-8 cm per bird. One linear feeder of 120 cm length and 8 cm depth for 40 growers.

Waterer space: 2 cm per bird; a circular waterer of 36 cm and 8 cm depth of 6 lit. capacity for 50 growers. Growers are to be provided with fresh, cool and potable drinking water at least twice a day. Water requirement is increased during hot days. Care must be made not to spill water on litter.

Lighting management: No artificial lighting is given other than natural day light since they require only 9 hours of light per day.

11.1 Introduction

Chi-square test is a non-parametric test. Such non-parametric tests have assumed great importance in statistical analysis and statistical inference because they are easy to compute and can be used without making assumptions about parameters as they are distribution-free tests.

Spleen is an elongated solid organ located on the left side along cranial and ventral abdominal wall. The size of spleen is variable in dogs. The spleen is larger in German Shepherds and Greyhounds. In cats the spleen is smaller and has fixed size. It is parallel to greater curvature of stomach within greater omentum. The position of spleen in dogs is variable as it is only attached by gastrosplenic ligament.

The prevalence of skin diseases in dogs is high throughout the world. Skin diseases are one of the main clinical complaint with which dogs and cats are presented at clinics. Skin diseases are numerous and have wide range of underlying etiology ranging from non-specific cause, infections (bacterial, viral, fungal. yeast), hormonal, nutritional to immunological causes. Most of the skin diseases are clinically manifested with focal or diffuse alopecia, itching, papules, pustules, erythema, scaling, scabs, lumps, unpleasant smell, rashes, urticarial plaques, dandruff, hot spots or excessive licking (Figure62) making the straight forward diagnosis a difficult task especially in dogs and cats with chronic dermatological disease.

Abstract

Organic farming is a method of crop and livestock production that involves much more than choosing not to use pesticides, fertilizers, genetically modified organisms, antibiotics and growth hormones. Organic fruit production essentially excludes the use of many inputs associated with modern farming, most notably synthetic pesticides and fertilizers. Organic agriculture, the innovative farming system can build-on and enhance the traditional knowledge and practices of local and indigenous communities. Indigenous Knowledge can be broadly defined as the knowledge that anindigenous (local) community accumulates over generations of living in a particular environment. ITK in fruit production is important for reducing the cost of cultivation, reducing the pollution and also the natural resource base. It is very important to understand these age old practices to address the local problems and to document it before is vanished away.

In India, poultry judging refers to selection of birds on the basis of their physical appearances, breed characteristics and production performances; however, in other countries, like USA judging is also used for eggs, carcasses and further processed products. The Directorate of Extension, Ministry of Agriculture, Govt. of India annually conducts livestock and poultry shows in various parts of the country in collaboration of state governments. Besides, state Agricultural/ Veterinary Universities or other institutions also conduct such shows. In these shows judging contests are carried out mostly for the undergraduate students by using a score card to grade birds either for production characters or breed characters. The winners are awarded trophies and cash prizes. The birds meant for judging are kept in individual cages and the participants are requested to score under various sub-headings and to finally rank the bird. Any deviation from “ideal” or “perfection” (as described by the American Standard of Perfection or the British Poultry Standards) but not serious enough to constitute a disqualifications in the show room is considered to be a defect. Serious defects are regarded as disqualifications and will bar a bird from winning any prize. Both layers and broilers can be physically evaluated for their performance rating.

The science of Meteorology is defined as the science that deals with physical and chemical processes of the lower atmosphere. The physical and chemical changes in the lower atmosphere produce weather and popularly known as the weather science. The weather science concerns the study of structure, state and behaviour of the lower atmosphere. It is essentially an observational science dealing with different atmospheric variables such as atmospheric pressure, temperature, wind, humidity, density, cloud amount, radiation, precipitation and related variables at a given moment and attempts to predict the behaviour of atmosphere over a period of few hours to few days ahead and disseminate the same in time to the users? community. The statistical approach of weather phenomena deals with the mean state of the physical properties of atmosphere. This branch of science is popularly known as Climatology. The weather science can be categorized into several branches based on method of approach, purpose and function, scale and region. Based on the purpose and function, it can be divided into several branches like Livestock Meteorology, Agro Meteorology, Forest Meteorology, Hydro Meteorology and Bio-Meteorology (Fig 1.1).

Orchard is a long-term investment and careful planning and resource analysis prior to establishment is essential. Lack of attention and care in the initial stages of orchard development results in irreversible damages. Essential resources for successful orcharding can be broadly grouped into two categories as biophysical and socioeconomical. Biophysical resources include land, soil, agrochemicals, planting materials, irrigation and manpower, while socioeconomic factors are finance, security, market, technical knowledge, transport, storage and social amenities.

Selection of crops and varieties should be done carefully, the most important factor being market demand. Popular fruit crops, which have demand in local markets, can definitely be a good choice. Previous experience and expertise of growers of selected locality can be made use before finalizing plans.

SITE SELECTION

Factors like climate, soil, availability of water, trained labour and inputs like fertilizers and plant protection chemicals should be considered. Accessibility to market, railway station, transport, nearness to road, storage facilities and processing units which facilitate expeditious disposal of perishable fruits, help in getting good returns from orchards. Successful fruit growing in a particular locality depends to a great extent on the natural factors especially climate and soil.

Detection of sensations allow the body to be aware of changes (or stimuli) that occur in the environment or inside the body. These senses permit the central nervous system to produce reactions for the stimuli and maintain body homeostasis. Somatic senses (“soma” means body) detect touch, pain , pressure, temperature, and tension on the skin and in internal organs. Special senses detect the sensations of taste, smell, hearing, equilibrium, and sight, only in special sense organs in the head region. All senses are detected by sensory receptors, and after integration and processing being done in the central nervous system, motor nerves produce a response.