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Agriculture is a backbone of Indian economy as nearly 60% rural population is engaged in agricultural activities. Though the contribution of agriculture in GDP is declining mainly due to increasing contribution of other activities, it is still the main occupation of our rural masses and its significance is related to food and nutritional security of our country. It is again true that the income of farmers is not increasing as compared to other industrial sectors, so the government has recently launched many farmer's friendly programs for increasing farmer's income.
The course, 'Rainfed Agriculture & Watershed Management' is one of the important courses of B Sc Agriculture degree program. This book is written covering all aspects of syllabus.
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Agriculture is the backbone of Indian economy as nearly 60% rural population is engaged in agricultural activities. Though the contribution of agriculture in national GDP is declining mainly due to increasing contribution of other activities, it is still the main occupation of our rural masses and its significance is related to food and nutritional security of our country. It is again true that the income of farmers is not increasing as compared to other industrial sectors, so the government has recently launched many farmer’s friendly programs for increasing farmer’s income.
Agriculture is the backbone of Indian economy as nearly 60% rural population is engaged in agricultural activities. Though the contribution of agriculture in national GDP is declining mainly due to increasing contribution of other activities, it is still the main occupation of our rural masses and its significance is related to food and nutritional security of our country. It is again true that the income of farmers is not increasing as compared to other industrial sectors, so the government has recently launched many farmer’s friendly programs for increasing farmer’s income.
1 Rainfed Agriculture: Principles and Scope
Rainfed agriculture constitutes 80% of global agriculture and plays a critical role in achieving global food security. However, growing world population, water scarcity, and climate change threaten rainfed farming through increased vulnerability to 1 droughts and other extreme weather events. Out of the total population of 7.3 billion, about 1 billion are food insecure and 60% of these live in South Asia and Sub Saharan Africa.
Rainfed agriculture constitutes 80% of global agriculture and plays a critical role in achieving global food security. However, growing world population, water scarcity, and climate change threaten rainfed farming through increased vulnerability to 1 droughts and other extreme weather events. Out of the total population of 7.3 billion, about 1 billion are food insecure and 60% of these live in South Asia and Sub Saharan Africa.
2 Historical Development of Dry Land Agriculture in India and World
Water is essential for life and most of the civilization flourished on bank of rivers like Indus valley, Mesopotamia, May, INCA and also destroyed in lack of water. Scarcities and famines were the common phenomena of the world civilization. Systematic dry cultivation started around 1850 and improved techniques were started in use in USA.
Water is essential for life and most of the civilization flourished on bank of rivers like Indus valley, Mesopotamia, May, INCA and also destroyed in lack of water. Scarcities and famines were the common phenomena of the world civilization. Systematic dry cultivation started around 1850 and improved techniques were started in use in USA.
3 Indian Climate
India comes in a tropical region and so it has a tropical monsoonal climate. The climate of India is governed by mountain ranges as well as direction of rain winds like south-west and north-east monsoon and alternate season is the main feature of Indian climate. Climate in South India is generally hotter and extremely humid than that of North India.
India comes in a tropical region and so it has a tropical monsoonal climate. The climate of India is governed by mountain ranges as well as direction of rain winds like south-west and north-east monsoon and alternate season is the main feature of Indian climate. Climate in South India is generally hotter and extremely humid than that of North India.
4 Soils of Rainfed/Dryland Areas
Soil is generally defined as the upper layer of earth in which plants grow. It is regarded as a source of nourishment to all animals, moving or static. From agriculture or crop production point of view, soil is loose earth surface that supports vegetation, its quality, type and density. It is generally treated as a dynamic living entity and its physic-biochemical properties are responsible for its nutritional index. Precision production technology with suitable management is the key factors for its longer sustainability.
Soil is generally defined as the upper layer of earth in which plants grow. It is regarded as a source of nourishment to all animals, moving or static. From agriculture or crop production point of view, soil is loose earth surface that supports vegetation, its quality, type and density. It is generally treated as a dynamic living entity and its physic-biochemical properties are responsible for its nutritional index. Precision production technology with suitable management is the key factors for its longer sustainability.
5 Aberrant Weather Situations and Contingency Crop Planning
Bread, cloth and house (Roti, Kapra and Makan) are the basic need of human life and linked directly with agriculture because agriculture provides livelihood for nearly two-thirds of the population in India and it currently accounts for 14.2% of the GDP and also employs 55% of country’s total workforce. The sharp fluctuations in agricultural growth are mainly attributed to the vagaries of monsoon. Rainfed agriculture is spread over 55% of net cultivated area, contributing over 40% to the national agricultural production.
Bread, cloth and house (Roti, Kapra and Makan) are the basic need of human life and linked directly with agriculture because agriculture provides livelihood for nearly two-thirds of the population in India and it currently accounts for 14.2% of the GDP and also employs 55% of country’s total workforce. The sharp fluctuations in agricultural growth are mainly attributed to the vagaries of monsoon. Rainfed agriculture is spread over 55% of net cultivated area, contributing over 40% to the national agricultural production.
6 Soil and Water Conservation
Out of 329 m ha geographical area in the country, 187.8 m ha or 53% is affected by various forms of degradation process which include 148.9 m ha affected by water erosion, 13.5 m ha by wind erosion, 13.8 m ha by chemical deterioration and 11.6 m ha by physical deterioration. The annual loss of topsoil is nearly 16.0 t/ha/year resulted in to 8.4 m t/year total nutrient loss.
Out of 329 m ha geographical area in the country, 187.8 m ha or 53% is affected by various forms of degradation process which include 148.9 m ha affected by water erosion, 13.5 m ha by wind erosion, 13.8 m ha by chemical deterioration and 11.6 m ha by physical deterioration. The annual loss of topsoil is nearly 16.0 t/ha/year resulted in to 8.4 m t/year total nutrient loss.
7 Water Harvesting Structures
Land, water and weather are natural resources that are critical for survival. Modern agriculture requires precise information on various agro-climatic parameters like soil, crop, climate and water resources for formulating efficient agricultural planning. Out of these, water is considered most scarce input in agriculture because its availability is reducing drastically for agriculture as well as drinking purposes. Besides, declining water tables and deteriorating quality of water resources caused pollution and sewage and effluents have further multiplied the problems.
Land, water and weather are natural resources that are critical for survival. Modern agriculture requires precise information on various agro-climatic parameters like soil, crop, climate and water resources for formulating efficient agricultural planning. Out of these, water is considered most scarce input in agriculture because its availability is reducing drastically for agriculture as well as drinking purposes. Besides, declining water tables and deteriorating quality of water resources caused pollution and sewage and effluents have further multiplied the problems.
8 Crop Adaptation and Mitigation Mechanisms to Drought
Drought is a recurrent feature of climate or climatic anomaly or weather related natural disaster. It occurs when the precipitation remains deficient over an extended period of time, usually for a season or more and affects water shortage in water bodies, streams, soil moisture, ground water etc. resulting into low crop production and economic performance of large regions or entire country. Drought occurs in virtually all regions varying its severity, low and high from regions to regions.
Drought is a recurrent feature of climate or climatic anomaly or weather related natural disaster. It occurs when the precipitation remains deficient over an extended period of time, usually for a season or more and affects water shortage in water bodies, streams, soil moisture, ground water etc. resulting into low crop production and economic performance of large regions or entire country. Drought occurs in virtually all regions varying its severity, low and high from regions to regions.
9 Sustainable Crop Production in Rainfed Areas
Rainfed agriculture occupies about 1.22 billion hectare (Bha) area worldwide, which is about 82% of total area (1.5 Bha) under agriculture (Yadav et al., 2006) and contributes nearly 58% to the global food basket. It is practiced under a wide variety of agro-climatic, edaphic and socio-economic conditions and globally, rainfed agriculture accounts for more than 95% of farmed land in sub-Saharan Africa, 90% in Latin America, 75% in the Near East and North Africa; 65% in East Asia and 60% in South Asia (Singh et al., 2018).
Rainfed agriculture occupies about 1.22 billion hectare (Bha) area worldwide, which is about 82% of total area (1.5 Bha) under agriculture (Yadav et al., 2006) and contributes nearly 58% to the global food basket. It is practiced under a wide variety of agro-climatic, edaphic and socio-economic conditions and globally, rainfed agriculture accounts for more than 95% of farmed land in sub-Saharan Africa, 90% in Latin America, 75% in the Near East and North Africa; 65% in East Asia and 60% in South Asia (Singh et al., 2018).
10 Principles of Watershed Management
Due to continuous pressure on our food security even after independence, the cultivation has been expanded to marginal and sub marginal lands that are prone to different types of erosion. Though the rainfed farming is based on the erratic and uneven rainfall, it contributes nearly 50% food grain, 90% oilseeds and pulses and 65% cotton production.
Due to continuous pressure on our food security even after independence, the cultivation has been expanded to marginal and sub marginal lands that are prone to different types of erosion. Though the rainfed farming is based on the erratic and uneven rainfall, it contributes nearly 50% food grain, 90% oilseeds and pulses and 65% cotton production.
11 Water Management for Sustainable Agriculture
Increasing population, declining natural resources, changing climate and political stability are the major threat to our food, nutritional as well as environmental security. It is expected that India’s population will boom to 1.5 billion by 2030 and to feed them we need approximately 341mt food grain including 315 mt cereals and 26mt pulses) (Kumar et al., 2016).
Increasing population, declining natural resources, changing climate and political stability are the major threat to our food, nutritional as well as environmental security. It is expected that India’s population will boom to 1.5 billion by 2030 and to feed them we need approximately 341mt food grain including 315 mt cereals and 26mt pulses) (Kumar et al., 2016).
12 Mulching and Its Impact on Agricultural Production
The word mulch was coined by Wagganor in 1960. It is derived from the German word ‘molsch’ means “easy to decay,” and mulches have widely been used for vegetable production since ancient times (Lightfoot 1994). Therefore the term mulching refers to the practice of covering the soil surface with different organic and inorganic materials, known as mulch materials to reduce moisture loss, balance wide variations in diurnal soil temperatures especially in the root zone, control weeds, insect-pests and diseases and finally enhance crop yield (Nalayini 2007; Kader et al. 2019).
The word mulch was coined by Wagganor in 1960. It is derived from the German word ‘molsch’ means “easy to decay,” and mulches have widely been used for vegetable production since ancient times (Lightfoot 1994). Therefore the term mulching refers to the practice of covering the soil surface with different organic and inorganic materials, known as mulch materials to reduce moisture loss, balance wide variations in diurnal soil temperatures especially in the root zone, control weeds, insect-pests and diseases and finally enhance crop yield (Nalayini 2007; Kader et al. 2019).
13 End Pages
1. Indian Agricultural Research Institute, New Delhi
2. National Dairy Research Institute, Karnal
3. Indian Veterinary Research Institute, Izatnagar
4. Central Institute on Fisheries Education, Mumbai
1. Indian Agricultural Research Institute, New Delhi
2. National Dairy Research Institute, Karnal
3. Indian Veterinary Research Institute, Izatnagar
4. Central Institute on Fisheries Education, Mumbai
