eChapters

Introduction

Plant diseases are one of the causes of concern in agriculture and horticulture industry. Estimated global crop loss due to plant diseases exceeds hundred billion US$ worldwide (Orke et al. 1994; Narayanasamy, 2010). Plant diseases are caused by microorganism such as fungi, bacteria, viral, viroids and phytoplasma. Most of the plant pathogens are transmitted through seed or planting material, which can spread secondarily through vectors and lead to severe loss to the crop. Among plant diseases, viral diseases cause serious crop losses and affect the quality of products, while the use of virus- free seeds and planting stocks results in a substantial increase in agricultural crop production (Waterworth & Hadidi, 1998; Strange& Scott, 2005).

INTRODUCTION

Women constitute half of the humanity, contributing to two-thirds of world’s work hours. She earns only one-third of the total income and owns less than one-tenth of the world’s resources. This shows that the economic status of women is in a pathetic condition and this is more so in a country like India. Rural women in India share abundant responsibility and perform a wide spectrum of duties in running the family, maintaining the house, involving in activities like rearing, feeding livestock, attending to farm labour, and the likes. Still they suffer economically and are socially invisible. Training of rural women is important so as to increase their involvement in developmental process, enhance their skill and make them equal partners in national development.

Background

In simple term, what agriculture is to land aquaculture is to water and can be defined as the art, science, and business of cultivating plants and animals in water. Considering scope of inland aquaculture in the present discussion would be limited mostly to grow desirable fish/prawn (hence forth termed as fish) in fresh water ponds and to some extent to their seed production in hatcheries. The important activities in aquaculture includes deliberate interventions during the rearing process or life cycle of the stock, management of the culture system and production process so as to increase survival and production of stock. Since, the main goal of aquaculture is to maximize the fish production per unit land/water resources per unit time which primarily depends on the degree of management and intervention. The important forms of intervention and management practices are regular stocking, fertilization, feeding, liming etc. The degree of care taken or effort put in these aspects would determine the level of production.

The establishment and the longevity of the organisms from one to complex multiple cells are controlled both by climate and weather in a region. Climate(macro level physical factor) of a region permits a particular organism to initiate its establishment, while the prevailing weather (micro level of the climate factor) which is known to occur within that climate controls the growth and multiplication of the selected organisms and thus proving the immense need of both climate and weather to living organisms. Within this science, when the weather is favorable for a particular organism throughout the year in a region, which cause disease to higher organisms then that region is termed as endemic region to a particular disease, where the management is focused towards strategical(long term) and tactical(short term) approaches. When in a year, from few weeks to few months the weather may be highly favorable for the outbreak of a particular disease, then that region is named as epidemic region for that disease and by establishing scientific link between weather and disease causing organism, it is possible to forecast / predict disease initiation in time and practice tactical management. Among the weather factors, temperature(both maximum and minimum), rainfall (amount and its distribution), relative humidity(both maximum and minimum) wind speed, dew, fog and mist would influence the organisms causing disease in livestock both in positive and negative terms. This is the new emerging area in the field of animal climatology and an attempt has been made to integrate animal diseases with climate and weather factors based on the available literature. Scope for research is vast in this new area and is discussed in a sub-head of the conclusion.

ABSTRACT

Using a hand auger of 2 m length, upper, middle and lower core sediment samples of seventy nine in number have been collected from the Vaippar river, its tributaries and Vaippar beach in order to understand the role of Vaippar river and its tributaries in making up the Vaippar beach placer deposits. The heavies are found to be concentrated abundantly in fine and very fine size grades of all the samples collected from both the environments. The average heavy mineral concentration varies from 3.13 to 17.40 % in river bed while it is 6.19 – 64.82 % in the beach. In river bed, the pattern of concentration of heavies in upper, middle and lower core samples does not show any characteristic uniform pattern and inferred that it is controlled by the grain size of the parent rock, supply of sediments from the source, geomorphological features of the river and hydrological characters of running water. In the beach, the concentration of heavies are effected mainly due to the winnowing action of waves. However, a phenomenal increase in the heavy mineral concentration of beach samples might be due to the supply of sediments from other source besides the Vaippar river.

Introduction

In India, per capita cereal consumption has been declining since the early seventies, despite a significant increase in per capita cereal production (Radhakrishna and Ravi, 1992 and Rao, 2000). Cereal consumption per capita per month fell from 15.35 kgs in 1970-71 to 12.70 kgs in 1999-2000 in rural area and from 11.40 kgs to 10.40 kgs in urban area during same period. It might be due to shifting of consumers’ choice from food to non-food items; from cereals to non-cereals within the food group and from course to fine cereals within the cereal group. The decline in cereal consumption has been higher in the rural area due to development of rural infrastructure and availability of job opportunities which ultimately helped in improving their level of income (Rao, 2000). Despite spectacular growth in food production during last 30 years the problem of malnutrition still persists across different regions in India because increase in food grain supply alone cannot conquer hunger and malnutrition.

The consumption pattern and nutritional status have also experienced a significant change during last two decades in Bihar. Cereal consumption per capita per month has declined from 476 gms in 1983 to 455 gms in 19992000. The situation is more alarming in poor households who constitute about half of rural population in north Bihar. There is lack of research on consumption pattern, nutrient intake and nutritional status based on household data, particularly in context of Bihar. In view of the above observations the present study is undertaken to analyze the consumption pattern and nutritional status of poor households in north Bihar.

14.1 Introduction

Hydro-electric power is electricity produced by the movement of fresh water from rivers and lakes. Gravity causes water to flow downwards and this downward motion of water contains kinetic energy, that can be converted into mechanical energy, and then from mechanical energy into electrical energy in hydro-electric power stations. (“Hydro” comes from the Greek word hydra, meaning water). At a good site hydro-electricity can generate very cost-effective electricity.

1. Mughal garden

Mughal gardens are synonymous to formal style of gardening.

Broadly these gardens are categorized as Pleasure gardens and Tomb gardens.

Pleasure gardens are meant for kings and queens.

Tomb gardens are attached to tombs of kings and queens for giving peace to soul.

Gardens are symmetrically designed in rectangular or square plots.

The garden area is divided into four plots by water channels.

The four plots are planted with trees, shrubs, etc.

The four channels represent four rivers of life.

The running water provides coolness and freshness to the garden.

Reflection of sky and trees provide unique beauty to the eye.

The axis is straight and central and sometimes represented by tree line.

The water pool created in the centre with over flowing water serves as central specimen.

Fountains, cascades are linked to central pool to create scenic beauty

In agroforestry systems the various components like tree, crop and pasture exist in different proportions and orientations. It is difficult to find out which agroforestry system is the best suited for a given land situation. Similarly, it is to be decided which technologies are required for refinement and improvement of the existing agroforestry practices. But without sufficient knowledge of the existing system in a particular land situation, it is very difficult to set the research priorities for modification and development of this system.

Diagnosis and Design (D & D) is a systematic and objective methodology developed by International Centre for Research in Agroforestry (ICRAF) to initiate, monitor and evaluate agroforestry programmes. D & D is based on the philosophy that knowledge of the existing situation (diagnosis) is essential to plan and evaluate (design) meaningful and effective programmes in agroforestry research for development. The methodology plays a strategic role in all the phases of the agroforestry research process. D & D in agroforestry is unique and it has been specially developed for the following purposes.

Fertilizer recommendations are generally made on the basis of soil test. Recommendations of fertilizer for top-dressing are best made on tissue testing.

SOIL TEST

A number of approaches have been adopted to increase the precision of soil-test values in making fertilizer recommendations. Four most important ones are discussed.

Low-Medium-High Approach

Making fertilizer recommendations based on soil test for a nutrient involves conducting a large number of ?eld experiments on soils similar to those which are intended for making recommendations. For an individual nutrient (say P for example) experiments are conducted with graded doses of P on a crop for which the fertilizer recommendations are to be made. Thus, agronomic experiments are to be conducted for each crop on each kind of soil. The response curve can then be divided into three sections: a, low soil-test value and high response to fertilizer zone; b, medium soil-test value and medium response to fertilizer zone; and c, high soil-test values and no response to fertilizer zone. In India, this was done

1. Introduction

Fenugreek (Trigonella sp.) is one among the world’s oldest seed spice crops and has gained a supreme importance due to its extensive pharmacological properties (Basu and Prasad, 2011; Maloo et al., 2020). In ancient time’s fenugreek plant was well known and used as a medicinal drug by Egyptians (Rouk and Mangesha 1963). The Ebers Papyrus (one of the oldest preserved pharmaceutical documents) detailed therapeutic advantages and descriptions in Egypt circa 1500 BC (Betty, 2008). It has gained great importance due to its multifaceted uses which are being exploited by farmer’s and industrialist for different purposes.

Introduction

The compounds produced one kind of microbe that are poisonous to another type of microbes are known as antibiotics. Actinomycetous bacteria and certain fungi are the primary producers of antibiotics. Antibiotics have highly complicated chemical makeups and formulations, which are frequently unknown. To combat plant diseases, however, antibiotics were first introduced in 1950. Typically, plants absorb and then move systemically internal antibiotics used for managing plant diseases. Usually, they operate on the host or the pathogen directly or after going through transformation to control plant diseases. In addition to acting as eradicators, they also serve as protectors and offer resistance to the invasion of viruses, and their impact lasts for a while.

The unique topography and terrain of North East (Manipur, in the study) have provocated the inquisitive minds to set off a study on altitude based extension approach and variability. While there have been changes of biodiversities with the change in altitude, there should have been a change of socio-cultural practices with the change of altitude too. It would critically analyse the unique flow of information, the texture of praxis, the curve of enthnobotanical configuration and the enterprise mixes including crops, animals and birds enterprises.
However, due to hilly terrain, erratic climatic conditions and shortage of trained manpower, the full potential of these resources is underutilized. Also, severe soil erosion, water scarcity during dry season, fragmented land holding and sloppy terrains are some of the major bottlenecks for mechanized farming.
Extension education, by becoming both system and function for technology socialization, can’t go without location specific references. With a change of altitude and slope, the panorama of biology and sociology keeps transforming and hence, the altitude of a hill becomes a major character itself in deciding on strategy of extension for a synergy of geography with extension policies.
What is happening since past and till today is a kind of blanket extension recommendations is being made to cover all geographical variations and social scores, along and across the slope or terrains in a given hill ecosystem. The North East Hill eco system of India is blessed with bounty of nature and is one of the hot spots of the World. Altitude extension, the first of its kind in extension domain, has attempted to study the variations along with the altitude of a hill ecosystem in designing the extension approach with social, technological, and cultural variants. In this research and with this innovative approach, an empirical study has to be conducted to find out the variations with the change of altitude, for ultimately designing a both gross and subtle extension plan for desired changes in the agriculture of hill ecosystem.
Keeping in view all the aforesaid discussed issues the present study entitled “Altitude Extension: The Concept, Approach and Dynamics” was carried out with the following objectives:

Abstract

Rural woman plays dominant role in dairy husbandry activities. Capacity building of rural women in this enterprise is the need of the hour to sustain 4% growth rate in dairy sector as the future demand for dairy products is bound to increase.  Specific objectives of the study are to understand the socio-economic and dairy husbandry scenario of households; knowledge level about different aspects of dairy husbandry; impact of training on knowledge and; policy implications for their capacity building for this enterprise in the state of Haryana. The data towards this end was collected from a survey conducted on 180 women trainees where pre and post models were used. The background socio-economic variables of women trainees were: 26-45 years age group, literacy of 76.12% and the main occupation was agriculture and household management. Milch buffalo (84.45%) was the main dairy animal. Milk production of more than 5 litres was found in 55.54 percent households and selling of milk more than this quantity was seen in 14.14 percent households. About 60 percent of woman trainees themselves looked after the animals. Pre-training knowledge reveals that majority of women knew the right milking method (70.6%) and breed of buffalo (62.2%).

Availability of quality fish seed is the critical and basic input for successful fish culture operations. Till the sixties, a major part of the seed required for culture was being collected from the riverine sources, which had several disadvantages. Indian major carps viz. Catla, Rohu & Mrigal and Chinese carps viz. Silver carp & Grass carp mature in the pond but do not spawn or lay eggs in standing waters. Usually they breed or spawn naturally in flowing rivers during monsoon months. In artificial breeding, certain inducing agent (hormone) is injected to fish for successful spawning.

In India, the first successful induced breeding of carp was achieved through use of pituitary hormone in 1957. Increased seed production of fish today is a direct result of improved technologies of breeding, hatching and rearing.

Three decades ago, earthen “pit” hatcheries were used for hatching eggs around bunds. Today large commercial hatcheries exist, where all activities such as raising of brood stock, breeding and fry rearing can be undertaken. This has certainly marked the growth of the industry. Commercial Chinese hatchery facilitates not only large-scale production of fish seeds but also improves the survival percentage of seed.

Aim

To estimate the soil loss using universal soil loss equation

Universal soil loss equation

Wischmeir and Smith (1962) has been developed a predictive equation for estimating the soil loss taking into account following factors: Climatic characteristics, soil characteristics, crop management and conservation practices. It is called Universal soil-loss equation (USLE).

Agroforestry systems are more complex than the agricultural systems. The long-term nature of trials involving woody species and the varying objectives of agroforestry trials demand that adequate caution be exercised in their design. Several characteristics of the trees like slow growth, long-term effects on their surroundings, long life, age of trees, the area over which the influence of trees extend, etc. complicate the issue of designing experiments for these systems. Agroforestry experiments are often established on marginal sites which include sloping lands, and sites with infertile and degraded soils. It is thus difficult to find homogeneous sites of such problem areas, especially sloping lands where plots along contour lines are long and linear. Germplasm of many agroforestry tree species are usually collected from different origins which lack uniformity. Therefore, experimental materials in an agroforestry experiment may not be of uniform quality.

There are several features of agroforestry systems that require some modification of the methods usually used in agricultural experiments. Important issues related to agroforestry experiments include

Sample Preparation

Sample should be taken at six or more points on the top of the surface by means of a tubular trier of sufficient length to extend to the bottom of the barrel. Remove this cores and transfer to clean, dry, air tight container and seal immediately.

Before opening sample for analysis, make homogenous either by shaking or by alternately rolling and inverting container. If lump are present, sift sample through No 20 sieve, rubbing material through sieve and tapping vigorously, if necessary.

Avoid sampling on rainy day or when humidity is high, so as to reduce moisture absorption from air.

1 Determination of Moisture Content by Moisture Balance Introduction

In this procedure, infra-red radiation is used to accomplish rapid drying. The tester has a sensitive torsion balance which permits rapid determination directly from the balance scale, eliminating the need for computing or calculation to obtain results. This method is useful for the in-process determination of moisture because the results may be obtained in minutes.

Introduction

• Nematicides are chemically synthesized products that kill or adversely affect nematodes.

• These products can have a nematicidal or nemastatic effect on nematodes.

• Nematicidal compounds are highly toxic and kill exposed nematodes.

• Nemastatic compounds do not kill nematodes but interfere with the migration of nematodes towards the roots of the host plant or delay nematode hatching.

• Many nematicides are broad spectrum, volatile, soil fumigant.

• They are not only active against nematodes, but also insects, fungi, bacteria, weed seeds and almost everything else that lives on the ground.