eChapters

Tea tortrix/flushworm: Homona coffearia:Tortricidae

The tortrix is  an important pest of tea leaves. The larvae make leaf nests by webbing the leaves using silken threads and feed from inside. A single caterpillar makes several cases. Young larvae prefer tender leaves, while the older larvae are seen in mature leaves. The economic produce being the leaves, and since chemical control is not advised, especially during the picking phase, the pest becomes a management problem.

Introduction

The Indian agriculture is very complex and carrying out multi-functionalities of providing food, nutrition and ecological security besides employment and livelihood for over 700 million people. Indeed, India has made a marvelous achievement in attaining self-sufficiency in food grain production after the introduction of Green Revolution which eventually resulted in maintaining all-time high buffer stock in warehouses of our country. Such rosy picture in production trends turned to be bleak in the past few years.

Promotion of perennial crops is a good alternative for food security since they offer more consistant, year-round production without any break. Agathi and Chekkurmanis are the two nutritive perennial greens that can be easily grown in hot and humid tropical climate.

Introduction

Rainfall is the principal source of water in arid areas, which augments soil moisture, groundwater and surface flows. Agriculture and several of the other economic activities in arid areas depend on rain. This region is devoid of any well defined perennial river system. Under such circumstances every drop of water becomes very precious. Of the total water use about 85% of water is used for irrigation and remaining 15% is used for drinking, industrial and other purposes. About 65% of irrigation water and 30-40% of drinking water is subjected to serious losses. Hence, increasing water use efficiency coupled with increasing availability of water through rainwater harvesting and management is of prime importance for sustainable development of arid areas. Rainwater harvesting, its conservation and efficient utilization can solve problem of water scarcity to the greater extend. Rainwater harvesting in small ponds (nadis), underground tanks (tankas), Khadins (Low lying areas) etc. is an age-old tradition in arid zone of Rajasthan. These traditional rainwater harvesting structures vary in design, shape and size. These traditional methods have undergone several changes for being more economical and efficient. Central Arid Zone Research Institute (CAZRI), Jodhpur since its inception in year 1959 is continuously working for development and refinement of water efficient techniques for crop production, individuals and for the communities for development in hot arid zone of India.

9.1. STATISTICAL METHODS

Measures of central tendency : Three measure of the central tendency of a frequency distribution are mean, median and mode.

1. Mean / average / arithmetic mean : It is sum of all of the data values divided by the number of data values and it affected by extreme values.
2. Median : It is the middle value of the data set when it has been arranged in ascending or descending order. This is not at all affected by extreme values.
3. Mode : It is the value that occurs most often in a distribution. Not affected by extreme values. It used to find the ideal size of different age group. eg: size of readymade garments, shoe size

   Harmonic mean : Reciprocal of the arithmetic mean of the reciprocal of a given value. It deals with rate, price and speed.

Measures of dispersion : It is the degree to which the data tend to spread about the mean value is called dispersion.

1. Range : The range of a distribution with a discrete random variable is the difference between the maximum value and the minimum value.
2. Standard Deviation (SD) : It is the square root of the arithmetic mean of the squares of the deviations measures for the mean or square root of the variance.
3. Variance : It is the average of the squared deviation from the mean or the square of the standard deviation
4. Standard Error (SE) : It is the measure of the mean difference between sample estimate of mean (X) and the population parameter (μ).
5. Coefficient of Variation (CV): It is defined as the ratio of the standard deviation to the mean. This is expressed as percentage.

8.1. Ecological Soundness

Conservation of natural resources essentially means maintenance and improvement of ecological status and not permitting them for further degradation. The natural resources are soil, water, forest, mountain and animal resources. An attempt was made to find out whether the respondents adopt certain recommendations for preservation of these natural resources irrespective of source of advice.

i. Soil Health

Soil is considered as an important ingredient of ecological soundness of an area. Adoption of soil health measures, like adding of organic manures, following of crop rotations, use of balanced chemical fertilizers, green manure and bio- fertilizers are some of the recommendations to maintain soil health. While examining the adoption of these measures, the following results were obtained.

Abstract

Any naturally occurring phenomena varies both in space and time. This variability is a result of various natural process and hence deterministic. Geostatistics is a tool to help us to characterize spatial variability and uncertainty resulting from imperfect characterization of the variability. Geostatistics involves the theory of regionalized variables, which dates back to the early fifties and includes concepts of random function and stationarity. Geostatistical mapping can be defined as analytical production of maps by using field observations, explanatory information, and a computer program that calculates values at locations of interest. There area number of spatial prediction models depending on the amount of statisticsinvolved in the analysis. Kriging is a generic name adopted by the geostatisticians for a family of generalized least- squares regression algorithms and various kriging algorithms viz., punctual kriging, block kriging, co-kriging and universal kriging are explained in this paper. Applications of geostatistics can be found in many varied disciplines ranging from the geology to soil science, hydrology, meteorology, environmental sciences, agriculture and even structural engineering and some of its applications are summarized in this paper.

Keywords :Geostatistics, spatial variability, kriging, model

This fruit plant is fast-growing when young, but soon become slow-growing tree thrive well under tropical, sub-tropical and temperate region. Mostly this crop is being cultivated for rearing of silkworm and wind break rather than fruit crop. This crop not specific with climatic requirement so can be grown in arid, marginal soil, barren land without much care.

The different plant parts viz., stem, bark, twigs, leaf, fruit etc are being utilized in different ways. Stem use for making agricultural implement, house artisans’, sports items, fodder for animals and fruits use as fresh dessert and in processing for making of different value added products like jam, beverages etc. Apart from these, its different plant parts also have medicinal properties use mainly in folk, ayurvedic and unani medicines.

28.1 Introduction

The stress that is caused by biological agents or factors such as diseases, insect-pests and parasitic weeds is called biotic stress. The term disease can be broken into two words: “dis” (means negative, reverse or opposite) and “ease” (means comfort, or freedom from pain or discomfort). Hence, plant disease can be defined as any harmful alteration from the normal functioning of physiological processes. Diseases may be bacterial, fungal or viral. A wide range of insects infests various crop plants. The extent of damage caused to crop plants by various organisms is usually in the order fungi > bacteria > viruses > nematodes = insects. But the relative importance of these organisms varies to a great deal in different crops. Breeding of cultivars resistant to diseases and/or insect-pests is the cheapest, safest and most dependable means of limiting the losses due to them. Resistant cultivars form an important component of integrated management of diseases and insect-pests.

28.2 Breeding for Resistance to Biotic Stresses-Diseases

Agrios (1970) has defined disease as: “Disease is a series of invisible and visible responses of plant cells and tissues to a pathogenic microorganism or an environmental factor that result in adverse changes in form, function or integrity of plant and may lead to partial impairment or death of the plant or its parts.” The organism causing disease is called pathogen, while the plant affected by the disease is called host.

The principles underlying breeding for resistance to diseases are much the same as for other characters, except for one important difference, i.e., the diseases caused by pathogens are the product of interaction between two genetic systems, that of the host and that of the parasite. Both systems are capable of variation and evolution and affect the interaction between host and pathogen. Here the breeder is required to deal with the heritable traits of both the host plant and the pathogens invading it.

Climate change is exerting profound effects on global agriculture, posing significant challenges to food security, agricultural productivity, and rural livelihoods. This article explores the intricate relationship between climate change and agriculture, examining how changes in temperature, precipitation patterns, and extreme weather events impact crop yields, livestock, and farming practices. It delves into the economic, social, and environmental repercussions of these changes, highlighting vulnerable regions and populations. The article also discusses adaptation and mitigation strategies, emphasizing the roles of technology, policy, and sustainable agricultural practices in building resilience. By understanding the multifaceted impact of climate change on agriculture, we can develop comprehensive approaches to ensure food security and sustainable development in an increasingly unpredictable climate.

1. _____________ is a fertilize ovule consisting of intact embryo stored food and seed coat, which is viable and has got the capacity to germinate. (Seed)
2. The content of other than seeds such as straw, soil particles, small stones and seeds of other species is called_____________. (Inert material)
3. Initial seed obtained from the selected individual plants of a particular variety or parental line, used to produce breeder seed and forms the basis of the total seed production chain is_____________ seed. (Nucleus)
4. The loss of weight of a sample when it is dried due to decrease in_____________. (Moisture)
5. A specified quantity of seed, physically identifiable in respect of which an international analysis certificate may be issued is called_____________. (Seed lot)
6. The blowers are used for_____________. (Purity of seeds)
7. A type of seed that is not certified but the labelling is done to indicate the quality or standard in a truthful manner is called_____________ seed. (Truthfully labelled seed)
8. The reagent used for biochemical test for determining seed viability is_____________. (Tetrazolium chloride or Bromide)
9. The food material contained in_____________that nourishes the embryo during its development. (Endosperm)

Introduction

“Non-monetary inputs are defined as those cultural operations which help to achieve high yield at no extra cost and whose cost does not change with the level of output”.
 
After the advent of green revolution, nutrient management has received the significant attention by farmer as well as researchers; as a result of which and coupled with the requirement for high yielding varieties, consumption of plant nutrient (N, P and K) increased tremendously. Variability was observed in fertilizer consumption between the states. 

The term ‘Horticulture’ is derived from two Latin words, Hortus meaning Garden and Cultura meaning Cultivation. In ancient days the gardens had protected enclosures with high walls or similar structures surrounding the houses. The enclosed places were used to grow fruits, vegetables, flowers and ornamental plants. Horticulture differs from agriculture and forestry in specializing the cultivation of garden crops. The garden crops include fruits, vegetables, flowers, ornamental trees, spices, plantations, medicinal and aromatic plants. Horticultural crops do not give food grains. The products of horticultural crops such as fruits and vegetables are highly perishable so that they are utilized in the fresh state. In general horticultural crops need more intensive cultivation (i.e. need more work) than the agricultural crops.

Special Features of Horticulture

As horticultural crops generally need intensive cultivation, they require a large input, capital, labour and technology per unit area of land.

Many cultural operations are specific to horticultural crops. The cultural operations such as propagation, fertilization, training, pruning, harvesting and marketing are skilled operations and these are specific to horticultural crops.

Mostly the horticultural products are utilized in the fresh state and are highly perishable.

Most of the horticultural crops are the rich sources of vitamins and minerals.

Gratification or aesthetic sense is an exclusive phenomenon for horticultural science.

Phalsa is an important minor fruit crop of India. It is a sub tropical fruits, which is also known as star apple. It is known by different vernacular names in different parts of country for example Dhamini in Bengali, Phalsa in Punjabi and Shurkhi in Hindi.

Phalsa is a shrub or small tree of Indian origin. Phalsa has been mentioned in Vedic literature as having certain medicinal qualities. Phalsa is a bushy plant of arid and semi- arid region. It is also cultivated in subtropical region. It is very hardy, tolerant to drought and suitable to grow on wastelands. Phalsa is best suited for small area as it is manageable by pruning. Its cultivation is favoured around big cities where fruits find a ready and quick sale. It has a poor keeping quality. It is also grown as an intercrop with mango, aonla, bael and ber. It is capable of growing under neglected and water scarcity conditions where only a few other crops would survive.

7.1 Introduction

A biodiesel fuel is an environmentally friendly, renewable, biodegradable fuel that is produced at domestic facilities from vegetable oils, animal fats, or recycled grease from restaurants. In accordance with the Renewable Fuel Standard, biodiesel meets the requirements for biomass-based diesel as well as the requirements for advanced biofuels as a whole. Biodiesel is distinct from renewable diesel, also known as “green diesel.” In its pure, unblended form, biodiesel is also known as B100 or neat biodiesel. Biodiesel is used to fuel compression-ignition engines in the same way as petroleum diesel. Alternatively, biodiesel is a liquid biofuel that can be used in diesel engines alone or blended with diesel oil. The fuel is obtained through the chemical conversion of vegetable oils or animal fats combined with alcohol.

Review of literature helps a scholar describing and citing related works to justify the topic and objectives set in the thesis work. This is a splendid scholastic exercise to vindicate and validate the reasons and output of the research work undertaken.

Following is the classified review of literature for a systematic illustration and interpretation of the problem and axioms:

Source of risk

Boris and Radivoj (2017) reveal that agricultural risk and uncertainty come from many different places, but they can be categorized into five management-related categories: production and technology, prices and the market, finance, legislation, and employees.

Introduction In India, knol-khol (Brassica oleracea var. gongylodes) is belongs to family brassicaceae with chromosome number is 2n=18. It is grown in north eastern states of India, J &K, West Bengal, Assam, Punjab, and other regions of southern India also. It is distinguished by the formation of knobs(tuber) is a thickening of the stem tissue above the cotyledons. This knob is picked for human use as a raw or cooked vegetable, while young leaves are also utilized in some areas. Economic Importance & Uses Knol-khol, also known as kohlrabi or German turnip, is a biennial vegetable that belongs to the same family as cabbage and broccoli. It is a popular crop in many parts of the world, including Europe, Asia, and the Americas.

Introduction

In an era defined by unprecedented connectivity and shared global challenges, the assurance of food security emerges as a cornerstone of human welfare and societal stability. At its core, the concept of global food security embodies a delicate equilibrium—wherein the abundant availability, accessibility, utilization, and consistency of nutritious sustenance are assured for all. Yet, this equilibrium remains precariously fragile amidst a confluence of modern predicaments. The imperatives of nourishment transcend mere sustenance; they intertwine with the fabric of public health, economic fortitude, and societal harmony. The imperious need to address food security issues stems from the stark realities it imposes: a profound impact on individual health, the stifling of economic prosperity, and the potential for social unrest. 

Introduction
Cell Cycle: Growth at the cellular level involves the cell cycle, which includes phases of growth (G1), DNA replication (S), and cell division (M). During these phases, cells prepare for and execute division to increase cell numbers. Mitosis and Meiosis: Mitosis results in two identical daughter cells, crucial for tissue growth and repair. Meiosis, on the other hand, is essential for producing gametes (sperm and eggs) and ensures genetic diversity.
Hormonal Regulation
Growth Hormone (GH): Secreted by the pituitary gland, GH stimulates liver cells toproduce insulin-like growth factor 1 (IGF-1), which promotes cell growth and division throughout the body.
Thyroid Hormones: Thyroxine (T4) and triiodothyronine (T3) from the thyroid gland regulate metabolic rate and are vital for normal growth and development, particularly in the nervous system.
Sex Hormones: Estrogens and androgens influence the growth of secondary sexual characteristics and contribute to the final stages of skeletal growth during puberty.
Nutritional Factors
Proteins: Amino acids from dietary proteins are necessary for the synthesis of new proteins and enzymes, which are crucial for cell growth and repair.
Vitamins: Vitamins such as A, C, and D are essential for various growth processes. For instance, vitamin D is vital for bone growth and calcium absorption.
Minerals: Calcium and phosphorus are key for bone development, while zinc and iron are important for cellular functions and overall growth.
Genetic Factors
Genetic Blueprint: Growth patterns and potential are largely determined by genetic factors. Genes influence growth rates, final height, and the development of various body structures.
Growth Disorders: Genetic mutations or abnormalities can lead to growth disorders such as dwarfism or gigantism, illustrating the role of genetics in growth regulation.