eChapters

Q.1 Informations available on an auxiliary variable X which is highly correlated with the study variable y, can be utilized in improving the sampling design for the study variable y.

Q.2 Information on auxiliary variable X can be used for stratification of population for the study character y.

4.1 Introduction
In many surveys, information on an auxiliary (supplementary, ancillary or apriori) variable x, which is highly (positively or negatively)correlated with the variable y under study, is readily available and can be used for improving the sampling design. Stratified sampling and probability proportional to size (p.p.s) schemes are two examples of improved sampling designs, in which the use of data on auxiliary variable has been made. However in both the schemes, it implies that the information on auxiliary variable on individual sampling units is available prior to presentation of sampling design. In case, data on auxiliary variable for individual sampling units are not available but only the aggregate value for all units of auxiliary variable is available, the two schemes can not be used. In such a situation, the aggregate data on auxiliary variable can still be used at the time of estimation of parameters under consideration, provided the data on auxiliary variable for the sampled units can be easily obtained at the time of recording the values of the study variable. Such types of estimation are based on ratio, product, difference and regression methods of estimation.

4.1 Introduction

In many surveys, information on an auxiliary (supplementary, ancillary or apriori) variable x, which is highly (positively or negatively)correlated with the variable y under study, is readily available and can be used for improving the sampling design. Stratified sampling and probability proportional to size (p.p.s) schemes are two examples of improved sampling designs, in which the use of data on auxiliary variable has been made. However in both the schemes, it implies that the information on auxiliary variable on individual sampling units is available prior to presentation of sampling design. In case, data on auxiliary variable for individual sampling units are not available but only the aggregate value for all units of auxiliary variable is available, the two schemes can not be used. In such a situation, the aggregate data on auxiliary variable can still be used at the time of estimation of parameters under consideration, provided the data on auxiliary variable for the sampled units can be easily obtained at the time of recording the values of the study variable.

Introduction

Ration formulation is a process by which different feed ingredients are combined in a proportion necessary to provide the animal with proper amount of nutrients needed at a particular stage of production. It requires the knowledge about nutrients, feedstuffs and animal in the development of nutritionally adequate rations that will be eaten in sufficient amounts to provide the level of production at a reasonable cost. The ration should be palatable and will not cause any serious digestive disturbance or toxic effects to the animal.
 
Different species, strains or classes of animals have different requirements for energy (carbohydrates and fats), proteins, minerals and vitamins in order to maintain its various functions like maintenance, reproduction, egg production, milk production and/or growth.
  
Least-cost ration formulation for non-ruminants is being prepared by  linear computer programming. For ruminants the approach used is to maximize the use of roughage, then, concentrate is used to supply the deficient  nutrients to meet the requirement of the animals. It should be remembered that rations for ruminants are formulated on dry matter basis due to wide variations in moisture content of feeds especially roughage.

Introduction

The people in Kolli Hills were more traditional in nature believing the fith and practices of the local communities. They happened to manage their livelihood through agriculture and maintained an indigenous life with their own knowledge system. They used to maintain the longstanding traditions from their ancestors and spread the knowledge in different spheres of livelihood. Such socially generated knowledge is popularly called as local knowledge. The ongoing practice of using such knowledge for indigenous communities established the belief that such knowledge used in atraditional manner was fruitful for the people. The concept of indigenous knowledge gained its worldwide recognition through the United Nations Conference on Environment and Education in 1992, World Conservation Strategy of International Union and Conservations of Natural Resources in 1980, Brundtland Commission, and World Commission on Environment and Development, 1987. These events recognized the existence of indigenous knowledge in every country, society, culture. Since India has a long history and much enriched culture there is abundant reservoir of indigenous knowledge in every part of the country. Similarly Kolli Hills of Namakkal district in Tamil Nadu, is a historical land having enriched cultural heritage which has varied communities and immense resources. Its flora and fauna are vast and varied in nature. The tribal communities, of this Kolli Hills, “Malayali” appear to live on their own knowledge system. The paper is intended to unfurl the essence of Indigenous Tribal Agricultural Practices (ITAPs) in Kolli Hills and the rationality analysis ITAPs in the study area. According to Grenier (1998) indigenous knowledge is the traditional knowledge of the local community existing within and developed around the specific conditions of women and men indigenous to a particular geographical area.

Fisheries
DSIR/TPDU/TIF 056 and E-28-GO-GOI Research Scheme on “Documentation and Preservation of Agricultural Traditional Knowledge through Farmer Participatory Approach”

Agricultural Tools
DSIR/TPDU/TIF 056 and E-28-GO-GOI Research Scheme on “Documentation and Preservation of Agricultural Traditional Knowledge through Farmer Participatory Approach”

Crop Management Practices
DSIR/TPDU/TIF 056 and E-28-GO-GOI Research Scheme on “Documentation and Preservation of Agricultural Traditional Knowledge through Farmer Participatory Approach”

Crop Protection Measures
DSIR/TPDU/TIF 056 and E-28-GO-GOI Research Scheme on “Documentation and Preservation of Agricultural Traditional Knowledge through Farmer Participatory Approach”

Medicinal Plants
DSIR/TPDU/TIF 056 and E-28-GO-GOI Research Scheme on “Documentation and Preservation of Agricultural Traditional Knowledge through Farmer Participatory Approach”

Post Harvest Methods
DSIR/TPDU/TIF 056 and E-28-GO-GOI Research Scheme on “Documentation and Preservation of Agricultural Traditional Knowledge through Farmer Participatory Approach”

Seed Storage Structures
Seed Storage Structure
Kuluppai / Kulumai (Mud Pot)
Th. Gopalakrishnan, 52 years old is residing in A.Edayapatti village in Manapparai taluk of Trichy district. He is educated up to 10^th standard and has agriculture as his primary occupation. He possesses a post harvest storage structure called ‘kuluppai/kulumai’.

It is a storage structure used to store grains, which is suited to all ecosystems. This structure is invented by ancestors and maintained for more than 100 years until now. 

Traditional Varieties

The genus Dioscorea comprises of approximately 600 species and sustains livelihood around the globe. Air yam, aerial yam, bitter yam, cheeky yam, potato yam, and parsnip yam are all names for Dioscorea bulbifera L., a traditional medicinal plant native to Asia, Northern Australia, America, and tropical Africa. It’s been used in traditional medicine for a long time and has a lot of potential.

Morphological characteristics

It is a perennial herbaceous climber that can reach a height of 10-20 metres and has multiple fibrous roots. The leaves are alternating, broadly cordate, and bright green in colour, with rounded basal lobes arising from one of them. Aerial tubers (bulbils) are circular, smooth-surfaced tubers that grow freely in leaf axils. Annual stems emerge from a tuberous, woody rootstock. These stems either creep along the ground or climb up the surrounding vegetation. Dioscoreaceae subfamilies are distinguished by the presence of bisexual and unisexual blooms. Seeds are trilocular, dark brown, and somewhat winged (1.2-1.6 by 0.5 cm).

Floral characteristics

Flowers are grouped in spikes that are hanging, axillary, solitary, or fascicled. The seeds are winged at the base, while the capsules are oblong and winged. The fruit has three valves and the perianth is tubular. From September to November, the plant blooms and bears fruit.

Abstract

The Rawana landslide, located in Sirmuar district of the Shimla Himalayas, Himachal Pradesh is repeatedly active in the recent years. It is a NE-SW oriented slide with the crown in the southwest and the wider toe in the northeast resting in Giri River. During some of the sliding events emanations of heat and gases were also inferred. In order to understand the landslide phenomenon and the causative factors, and there from to evolve mitigation measures, detailed studies of the slides were under taken. The Landslide hazard zonation mapping carried out in Rawana landslide using LHEF rating based BIS method indicates that it is located in high hazard zone. The detailed studies show the complex geological, structural, morphotectonic and hydrological setting. From the studies it is surmised that the toe erosion by Giri river and the rainfall infiltration in the mid slope region are responsible for the slide. Remedial measures have been accordingly evolved.

3.1. Reserve Bank of India

Established in April 1, 1935 as per RBI Act, 1934.

Agricultural Credit Department (ACD) organized in 1935 coordinated Bank’s operations with State Co-operative Banks and other banks and organization dealing with agricultural credit

Financing agriculture by commercial banks is looked after by Department of Banking Operations and Development (DBOD)

While, ACD continued to take care of co-operative credit

Introduction 
Rural entrepreneurship is not only important as a means of generating employment opportunities in the rural areas with low capital cost and raising the real income of the people, but also its contribution to the development of agriculture and urban industries Building capacity of Rural Agri-prenuers are a promising solution for unemployment (Renuka, 2020), migration, economic disparity, reduce poverty, development of rural areas and backward regions. Most of the rural populace is associated with agriculture and allied activities as pedigree occupation. However, to be commercially viable, these units need to sharpen their skill sets to thrive as a successful venture. India is home to about 700 tribal groups with a population of 104 million, as per 2011 census. This indigenous people constitute the second largest tribal population in the world after Africa. Tribal population of Jammu & Kashmir is among the nascent Tribal Groups joining the main stream of planned development, to which they have brought a distinct and colourful cultural variety. Their economy is closely linked with the forests and they are living a substandard life because of their primitive mode of livelihood. Majority of them are placed below the poverty line, possessing meagre assets and are exclusively dependent on wages, forest produce and farming, that too in a traditional way which leads to non remunerative returns. The peculiar aspect of tribals of our state is their scattered population who inhabit the difficult and remote geographic terrains which poses a severe threat to their speedy development. In J&K state the following communities have been declared as scheduled tribes 1. Balti, 2. Beda, 3. Bot, Bota, 4. Brokpa, Drokpa, Dard, Shin, 5. Changpa, Garran, 6. Mon, 8. Purigpa, 9. Gujjar, 10. Bakerwal, 11. Gaddi and 12. Sippi.

Mass contact method in extension education involves reaching a large audience or community through various communication channels to disseminate information, raise awareness, and promote behavior change. Unlike individual or group contact methods that involve direct interaction with specific individuals or small groups, mass contact methods are employed to reach a broader audience efficiently. These methods leverage mass media, such as radio, television, newspapers, social media, and public events, to deliver educational messages and engage with the target population.

Objectives

1. Dissemination of Information: To provide accurate and relevant information on agricultural practices, technologies, health, education, and other relevant topics to a wide audience.

2. Awareness Building: To raise awareness about important issues, challenges, and opportunities within the community, encouraging informed decision-making and action.

3. Behavior Change Promotion: To promote positive behavioral changes, such as adopting improved agricultural practices, adopting healthy behaviors, and participating in community development initiatives.

4. Community Mobilization: To mobilize community members to participate in extension programs, community projects, and collective action for social and economic development.

5. Knowledge Sharing: To facilitate the sharing of knowledge, experiences, and best practices among community members, extension agents, and stakeholders.

The chemistry of humic substances is the least comprehended in the field of Soil Science. The many important functions of humus will remain obscure if the structural chemistry of the humic and fulvic acids is not known. A variety of functional groups have been reported in humic substances. However, considerable disagreement still exists in respect of the exact amounts present and, in some cases, proof of existence is lacking.

Some important structural groups of organic molecules are given below: