eChapters

Introduction

In India, the marginal, small and semi-medium land holding constitutes more than 90% of the land holdings in the country. They are caught in a vicious cycle of low investment, low productivity and low income with little chance to get out of it. In general, majority of farm families possess limited and scattered land holding with a low productivity and they have very limited accessibility to the improved agricultural information because of their illiteracy and lack of participation in extension programmes. The development of entrepreneurship in subsidiary activity like vermicompost production and Dairying will definitely help the small and marginal farmwomen to increase the farm income. The entrepreneurship among farmwomen in vermi composting and dairying will definitely encourage them to start self employment in addition to the agricultural income. Farmwomen perform -multifaceted role in various fields such as production, processing and marketing. In spite of their significant contribution to production they have virtually remained invisible as farmers, home makers and the ultimate by protecting the whole family. Their role has become critical in the process of moving their family out of the vicious ‘circle of poverty’ Nataraju and Perumal, (1990). Farmwomen generally have lower income and less leisure time than men and seldom have equal opportunities to develop their capabilities. Farmwomen have been considered unorganized and inferior to men, Lelamma (2001).

Introduction

''Sewage, also known as domestic or municipal wastewater, is produced by communities of people. It is characterized by its volume or flow rate, physical condition, chemical and toxic constituents, and bacteriological status. Sewage primarily consists of greywater (from sinks, tubs, showers, dishwashers, and clothes washers) and blackwater (water used to flush toilets, combined with human waste)."

The four primary types of wastewater are domestic, industrial, agricultural, and urban. Domestic wastewater comprises black water containing human and animal feces, along with gray water from household tasks such as bathing, washing, cooking, and gardening. Industrial wastewater consists of industrial byproducts like pulp, paper, petrochemical runoff, chemicals, salts, and acids. Agricultural wastewater originates from agricultural practices, contaminated groundwater, and farming methods, particularly those involving fertilizers and pesticides. Urban wastewater is a blend of domestic and industrial wastewaters, compounded by sewage infiltration and rainwater.

The performance of plants is affected by the soil in which it grows and climate and micro climate of its surroundings.

Impact of soil

The soil provides anchorage, nutrients and water for plant growth. Soil fertility status, structure and texture influence the plant growth and productivity.

Classification of soil

On the basis of the organic and inorganic contents and particle size and texture, the soils have been classified. The inorganic matter in the soil constitutes of varying amount of sand, silt and clay, on the basis of which the soils are classified as follows.

Sandy soil

These soils have coarse textured and large pore spaces, have poor water holding capacity. Retention of nutrients in this soil is very poor. This type of soil is suitable for precocious crops. Sandy soils initiate rapid root growth, hence good as propagating medium. Since sandy soils has low in nutrient content, supplementation of adequate nutrition is imperative to achieve good plant growth.

Introduction

High population pressure has forced us to plough 46% of our country area for food production. The present productivity of 12.36 tones/ha of fruits needs to be raised to 40.0 tones/ha by using N, P₂O₅, K₂O with other inputs, since recommended ratio is 0.75:0.50:1.00. To achieve this target, the present day requirement of 0.67 million tones N, 0.46 million tones P₂O₅ and 0.91 million tones K₂O has been raised to 1.07, 0.58 and 1.14 million tones, respectively in order to supply the recommended ratio of fertilizers to an area of 3.65 million ha growing fruits (Yadav, 1999). Similarly in vegetables, the present production level of 13.41 tones/ha to be raised to 40 tones/ha requires 1.25 million tones of N, P₂O₅ and K₂O combined at the ratio of 1.33: 0.88 and 1.00.

Livestock production plays a critical role in global food security and economic sustainability. However, various stressors can significantly impact the well-being and productivity of livestock animals. Stress in livestock can arise from various sources such as environmental conditions, management practices, transportation, social interactions, and disease. Understanding the impact of stress on livestock production is essential for ensuring animal welfare and optimizing productivity. Although many factors can be involved, climatic factors are among the first and crucial limiting factors of the development of animal production in warm regions. In addition, global warming will further accentuate heat stress related problems in livestock. The first and foremost stress the livestock are exposed as a result of climate change is the heat stress. Among the environmental variables affecting animals, heat stress seems to be one of the intriguing factors making animal production challenging in many geographical locations in the world. Although animals can adapt to the hot climate, nevertheless the response mechanisms that ensures survival are also detrimental to performance. The vulnerability

In a country like India where the economy is dominant by agriculture and its allied sectors, nearly 75% of women are engaged in agriculture in comparison with their male counterparts. Among rural female workers, 50% comprises of agricultural laborer and 37% are cultivators. Not only this, around 70% of total farm work is performed by women folk. Majority of agricultural works are done by women farmers (FAO, 2011) and thus empowering them will have far-reaching effect on agricultural development. They usually operate multiple livelihood f ields, including farming, animal husbandry, and marketing along with doing the household chores and are closely involved in social issues. Among these activities when we look specifically into the agricultural tasks, it is very clear that approximately 70–80% of women are participating in all agriculture activities from raising seedlings, weeding, harvesting and, processing and value addition activities and sometimes their involvement extends to marketing their product. To compete in this fast-growing industry with others, the rural women need to be up-to-date with new technologies to foster the reach of innovations to the farm women. Training is one of the most important means by which farmers and rural women can upgrade their professional and technical skillset. This is an essential component in the area of agriculture where technology is changing day by day and the knowledge of the farming community including women needs to be upgraded at a comparatively quicker pace.

Introduction

On 26^th December 2004, out of the 7516 km long coastline of India, more than 4500 km stretch was badly affected by the 9.0 magnitude earthquake- triggered tsunami, resulting in the total destruction of living environment along the coast. The worst affected areas along the Indian coast were in Tamil Nadu, Kerala, and Andhra Pradesh states. Tamil Nadu state suffered maximum loss with the damage concentrated in 4 districts.

It was reported that due to 26 December, 2004 Tsunami in Tamil Nadu state, 8.96 lakh people were affected, 376 villages had heavy damage, 7951 human lives lost, 1000 KM coastal length is affected, the sea water penetrated 1-1.5 KM distance into the main land, 128394 dwelling units affected, 9559 cattle lost, 10245 ha cropped area affected, 42655 boats damaged. (GOI, Ministry of Home Affairs, 09.01.2005). Many felt that impact will be very serious and it will take years to resume normal activities in the region. This paper presents an analytical study of the impact of tsunami on agricultural production, household income of the farm households on a continuous basis from 2005 to 2008.

ABSTRACT

The continuing depletion of the stratospheric ozone layer mainly due to release of man-made atmospheric pollutants such as chlorofluorocarbons (CFCs) have resulted in the increase of solar ultraviolet-B radiation (UV-B; 280-315 nm) reaching to the Earth’s surface. UV-B is a small (less than 1% of total energy) but highly active component of the solar spectrum that can penetrate to biologically significant depths in lakes, ponds, rivers and oceans. It has been demonstrated that UV-B can cause wide ranging effects including mutagenesis, destruction of proteins/enzymes, inhibition of a number of vital metabolic processes and formation of thymine dimers in DNA leading to death of a number of organisms. A number of microbes including strict photoautotrophs always grow in lighted habitats and thereby always sense and face the stress of solar UV-B radiation. Similarly, humans are also exposed to varying levels of UV-B radiation depending upon the altitudes and latitudes of the location. A wide ranging effect of UV-B such as cataracts, skin cancer, immunosupression etc. has been reported in human. Damaging effects of increased UV-B radiation has also been shown in a number of microbes. These effects include inhibition of growth and survival, decrease in photosynthetic pigments, loss of PS II and RuBISCO activity, inactivation of nitrogenase enzyme and inhibitory effects on several other metabolic processes. Among photosynthetic pigments, phycobiliproteins seem to be the primary target of action since phycobilisomes are completely disintegrated after UV-B exposure. In this contribution an attempt has been made to put in perspective the main effects of UV-B radiation on microbes and human health.

1. Introduction

No doubt Village library is a part of public library. Village library plays an important role for creation knowledge in different field. As we know that maximum people in the village area not aware about their right, even they not know reading and writing. so the rate of literacy is poor. Therefore it can be mentioned that the illiteracy is the main barrier for their development and it will harm their day to day life. Many people in the villages is involve themselves in farming. Agriculture is the main of earning sources. Villagers do not have adequate knowledge in farming and fertilizer that they used for better result even they not know the bad affect of fertilizer that they used. Their life style is not hygienic because of illiteracy.

Web-education Technology

“Educating the people through web” this process is called web-education. The World Wide Web provides new opportunities and hopeful future for distance education over the Internet and the distance education is becoming a widespread used for quite a long time through Newspapers, Radio and TV. Now-a-days mostly the World Wide Web (WWW) getting vital role in distance education, e-learning and distance learning since the networking technologies are emerging very rapidly in the media dominant era. The connectivity of the internet to different kind of people around the world is increasing steadily, like TV and Radio. The World Wide Web and other Internet–based collaborative modern communication technology tools have significantly enhanced the ability to train and educate people electronically.

Introduction

Women in India constitute nearly half of the population. They contribute 75% to the development of our society as compared to men who only 25%. According to the census 2011, nearly 98 million women in India have agriculture jobs, but around 66.1 million of them are depended on others’ farms as agriculture labours. They are engaged largely in cotton, tea, oil seeds and vegetable production. It is also worth mentioning that from the basic level of work concerning farm related activities to unskilled farm jobs like sowing, transplanting, weeding, harvesting and post harvesting activities like winnowing, processing, storage etc. women are engaged right from the start.

Woman’s contribution to the fisheries sector is 22% according to the FAO. Food security, horticulture, sericulture, livestock production and collection of non- timber forest are some of the allied sectors in which they are involved. They are also involved in other allied sectors which include cattle management, milk and poultry farming, and fodder collection. At the same time, women’s domestic activities include cooking, child rearing water collection from the nearby and far-off places, fuel wood gathering and the overall upkeep of household. Ironically, women face disparities in terms of compensation, their share in properties and in representation in local bodies. Much of their contribution in the food production system as food producers and providers has not received effective recognition. This affects their lives and familial conditions in terms of poor health of children and low educational attainments.

Abstract

One of the major distinctive agriculture extension concepts is the Intensive Agricultural Development Village concept or Village Adoption System, where in the Extension Guides who are working at taluk level select a suitable village and disseminate the need based and innovative technologies released by the University. In this connection Extension Education Unit of University of Agricultural Sciences at Mangalore has adopted Irvathur and Renjala villages of Karkala taluk in Udupi district and several educational activities like Field Trials, Result Demonstration, FLD, Block Demonstration and Integrated Farming System Demonstrations were carried out. Training programmes were conducted on Vermiculture, Dairy farming, Paddy cultivation, Cashew demonstration, IPM on Areca nut, Coconut etc., Besides establishing Milk Producer’s Co-operative Societies in the villages, the key programme observed in the village was Vermiculture. To start with, Vermiculture was tried with one farm woman with 100 worms.

Impaction of the alimentary tract is a condition where ingesta or foreign material accumulates excessively in one or more segments of the gastrointestinal system, causing a blockage. In ruminants, the rumen and reticulum are common sites of impaction due to their roles as primary fermentation chambers. This condition significantly impacts the animal’s health, productivity, and welfare, and if left untreated, it can lead to severe complications or death.
Pathophysiology of impaction
Impaction occurs when the normal passage of ingesta is hindered due to excessive accumulation of indigestible, poorly digestible, or foreign materials.
This leads to:
1. Decreased motility: Overloading the rumen or reticulum impairs their motility, disrupting the normal mixing and fermentation processes.
2. Reduced absorption: The accumulation hinders the absorption of volatile fatty acids (VFAs) and other nutrients.
3. Fermentation imbalance: The retention of ingesta alters microbial populations, causing reduced fermentation efficiency.
4. Secondary issues: Prolonged impaction may lead to dehydration, metabolic acidosis, rumenitis, and systemic effects like toxemia.

Climate change is a significant global threat impacting riverine fish diversity, largely due to increasing water temperatures and altered flow regimes. As poikilotherms, freshwater fish are highly sensitive to temperature changes, which can lead to decreased dissolved oxygen and degraded water quality. Observed and projected responses include shifts in distribution ranges, with cold-water species often contracting or moving to higher altitudes or latitudes, while warm-water species may expand their ranges. Body sizes are predicted to decrease, coupled with altered growth rates, although this is speciesspecific. Studies indicate a loss of functional diversity in fish assemblages, often replaced by species more tolerant to warm and slow-water conditions, or by carnivores. While invasive species can introduce novel traits, they often contribute to an overall decrease in functional and taxonomic diversity. Fish with preferences for cold water, fast flows, and clean spawning substrates are particularly vulnerable. Addressing these complex, multi-factorial impacts is crucial for effective conservation strategies. Addressing these challenges requires an integrative, multidisciplinary approach, prioritizing vulnerable populations, implementing adaptive management strategies, enhancing habitat resilience, and fostering international cooperation to mitigate the pervasive and complex threats posed by a changing climate.

Introduction

Conservation tillage is a model of sustainable agriculture as it leads to profitable food production while protecting and even restoring natural resources. Conservation agriculture benefits farmers because it reduces production costs and increases yields, but it also has positive impacts on the whole society: enhancement of food security thanks to a better soil fertility, improvement of water quality, reduction of erosion and mitigation of climate change by increasing carbon sequestration. Conservation agriculture (CA) systems are also less sensitive to extreme climatic events and therefore contribute to the adaption of climate change and the resilience of agricultural systems. Hence, CA becomes a fundamental element of sustainable production intensification, combining high production with the provision of environmental security.

CA is based on healthy functioning of the whole agro-ecosystem with a maximum attention and focus on the soil. The soil is the entry point and it has to be considered not only as simple physical support to roots and plants, but as a living entity with its physical, chemical and biological characteristics. The focus of CA embraces not only the nutrient contents of the soil but also its biological and structural status, which are determinants of sustained productivity.

The paradigm of CA is that an undisturbed soil has the opportunity to develop and produce healthier plants. Soil life can develop in a stable habitat in quantity and quality better than on tilled soils, the structural integrity of soil is maintained, so continuous vertical macro-pores are not destroyed and remain as drainage channels for rainwater into the soils. Seeding under conditions of minimum soil disturbance is achieved by direct seeding through the mulch cover without tillage.

Abstract
Food webs are essential for understanding ecological interactions, and the discovery of trophic cascades marks a significant milestone in food-web ecology. Over the past four decades, debates on the prevalence and importance of trophic cascades have spurred extensive research and theoretical progress, yet the topic remains contentious. Trophic cascades, where alterations in one part of the ecosystem affect others, play a crucial role in shaping ecosystem structure and function. Rooted in foundational theories like the Green World Hypothesis, the concept has evolved to address more intricate ecological dynamics. Cascades often occur through top-down and bottom-up mechanisms, with top predators playing a key role in regulating ecosystems. This article explores their diverse impacts in aquatic environments, including changes in food web dynamics, biodiversity loss, water quality degradation, and disrupted nutrient cycling. Case studies, such as the otter–sea urchin–kelp system and Atlantic cod overfishing, highlight the profound consequences of these interactions. The findings underscore the importance of maintaining balanced trophic relationships to ensure ecosystem stability and resilience. Conservation efforts should focus on maintaining these dynamics to mitigate cascading effects and preserve biodiversity and ecosystem services.
Keywords: Trophic cascade, Food web, Impacts and Case studies, Top-down, Bottom-up cascade, Ecosystem stability.

Introduction “Xenobiotics” are “foreign compounds,” which are alien to the organism and removed from their natural environment. Xenobiotics are substances that are either alien to an organism or do not form a natural part of its diet. Compounds including pharmaceuticals, food additives, & environmental toxins are examples of xenobiotics. Normally, these substances are removed from the body by being broken down into compounds and then being expelled through the kidney, bile and lungs. For the pharmaceutical business, enzymes that metabolize xenobiotics are crucial because they are in charge of breaking down medicines. Similarly, xenobiotic transporters influence how long medications remain in the body.

Impatiens is the most popular bedding plant grown worldwide. The genus Impatiens is estimated to contain about 850 species (Grey-Wilson, 1980b). The majority is native to tropical and subtropical regions of India and Africa. The popularity of Impatiens walleriana is mainly due to its propensity for producing large numbers of flowers under low light intensity (Simmonds, 1980). Due to the high economic value and consumer demand for bedding impatiens, there has been a concerted effort by plant breeders to release a wide range of cultivars having different flower colours and distinctive foliage. Previously known as I. sultanior, I. holstii, it has several common names including “Busy Lizzie” and “Patience Plant”. It is one of two important groups of Impatiens in the horticulture industry with the New Guinea Impatiens (Impatiens hawkeri) group being the other. Despite being Impatiens walleriana is one of the most important bedding plants in the world, information on I. walleriana relatively scarce. Impatiens walleriana continues to lead as one of the three most important bedding plants worldwide. It is available as both seed and vegetative products. The history of its development, marketing success, wide adaptability, a large palette of flower colours and forms and unparalleled garden performance as a bedding plant for shade are described as an aid for continued crop development with breeding lessons for other flowering crops.

ORIGIN AND DISTRIBUTION

Jones and Smith (1966) proposed the Himalayan region as the centre of origin. Khoshoo (1957) and Gill and Chinnappa (1977) stated that the genus Impatiens contains over 600 species half of which occur in the Indian subcontinent. The major centers of diversity are in the highlands and mountains of tropical and sub-tropical India, Africa and Southeast Asia. There are only a few Holarctic species and none indigenous to South America or Australia (Zinov’ea-Stahevitch, and Grant, 1984). Impatiens walleriana also known by the names I. sultani Hook. f. and I. holstii Engl. is native to areas of Eastern Equatorial Africa including Kenya, Tanzania, Mozambique Malawi and Rhodesia; as well as Zanzibar and Pemba Islands.

Typically, African impatiens are highly endemic forest species, which thrive in moist semi-shade areas, and often in high altitude regions that receive ample rainfall (Grey-Wilson, 1980). Nearly all African Impatiens are native to habitats above 800 m and one third can only be found in habitats above 1500 m. However, I. walleriana may also thrive at lower elevations provided that these areas receive increased rainfall from monsoons (Grey-Wilson, 1980).

Impatiens is the most popular bedding plant grown worldwide. The genus Impatiens is estimated to contain about 850 species (Grey-Wilson, 1980b). The majority is native to tropical and subtropical regions of India and Africa. The popularity of Impatiens walleriana is mainly due to its propensity for producing large numbers of flowers under low light intensity (Simmonds, 1980). Due to the high economic value and consumer demand for bedding impatiens, there has been a concerted effort by plant breeders to release a wide range of cultivars having different flower colours and distinctive foliage. Previously known as I. sultanior, I. holstii, it has several common names including “Busy Lizzie” and “Patience Plant”. It is one of two important groups of Impatiens in the horticulture industry with the New Guinea Impatiens (Impatiens hawkeri) group being the other. Despite being Impatiens walleriana is one of the most important bedding plants in the world, information on I. walleriana relatively scarce. Impatiens walleriana continues to lead as one of the three most important bedding plants worldwide. It is available as both seed and vegetative products. The history of its development, marketing success, wide adaptability, a large palette of flower colours and forms and unparalleled garden performance as a bedding plant for shade are described as an aid for continued crop development with breeding lessons for other flowering crops.

Introduction

Rick (1984) used the term pre-breeding or developmental breeding to describe the same activity. Thus "genetic enhancement" or "pre-breeding" refers to the transfer or introgression of genes or gene combinations from unadapted sources into breeding materials (FAO, 1996)

However, enhancement has been more popularly adopted by PGR scientists. It is an emerging concept emphasizing the use of plant genetic resources

• To meet the market requirement, plant breeders have to develop improved cultivars.

• Crop improvement has led to narrowing down of genetic base resulting in slower progress (genetic gain) in plant breeding and increased risk of genetic vulnerability

Need for Genetic Enhancement

• In improving the level of resistance to biotic and abiotic stress.

• In improving quality characters such as fibre length, strength, fineness, maturity and uniformity.

• In developing early maturing genotypes, which can fit well in multiple cropping systems.

• In developing plant types suitable to machine picking etc.

• Use of germplasm will help in broadening the genetic base of cultivars as well as in creating vast genetic variability.