Exereise
1. Answer the following questions in details:
(1) Write notes on types of agriculture,
Answers
Subsistence farming: This is one of the most popular farming techniques that can be seen in various parts of India. The farmer along with his family cultivates grains for themselves or for sale at the local market. The entire family works on the farm and most of the agricultural work is done manually here. Tradition methods of farming are followed by the farmers in their small farms. Since facilities like electricity and irrigation are generally not available to the poor farmers, they do not use fertilizers and high yielding variety of seeds in their fields to the extent they should do.
Shifting Agriculture: This way of farming is widely used by the tribal groups to grow crops. First the land is obtained by clearing a forested area and then crops are planted. While the land loses its fertility, another area of land is cleared and the crops are shifted there. The commonly grown crops in this type of farming are dry paddy, maize, millets and vegetables. This practice is known by different name in different regions of India. For example, it is called Jhum in Assam, Ponam in Kerala, Podu in AP and Odisha, Bewar, masha, penda, and bera in MP. But since it causes extensive soil erosion, governments have tried to discourage this practice of cultivation by tribals.
Plantation Agriculture: Plantations are only capable of producing a single crop which takes long time to grow. Plantation agriculture is practiced in Kerala, Assam, Karnataka, and Maharashtra. For example, rubber, tea, coffee, cocoa, spices, coconut and fruit crops like apples, grapes, oranges, etc. are grown by plantation agriculture. Since it is a capital intensive process, it requires good managerial ability, technical know-how and advanced machinery, fertilizers, irrigation, and transport facilities. It is an export-oriented agriculture and grown in plantation agriculture have a life cycle of more than two years.
Intensive Agriculture: In areas where irrigation has been possible, the farmers use fertilizers and pesticides on large scale to bring their land under high yielding variety of seeds. It is also known as industrial agriculture. It involves higher use of inputs such as capital and labor per unit land area. This is where it differs from traditional agriculture where the inputs per unit land are lower.
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Answer:
Explanation:
Agriculture is the science and art of cultivating plants and livestock.[1] Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to live in cities. The history of agriculture began thousands of years ago. After gathering wild grains beginning at least 105,000 years ago, nascent farmers began to plant them around 11,500 years ago. Pigs, sheep and cattle were domesticated over 10,000 years ago. Plants were independently cultivated in at least 11 regions of the world. Industrial agriculture based on large-scale monoculture in the twentieth century came to dominate agricultural output, though about 2 billion people still depended on subsistence agriculture into the twenty-first.[citation needed]
Modern agronomy, plant breeding, agrochemicals such as pesticides and fertilizers, and technological developments have sharply increased yields, while causing widespread ecological and environmental damage. Selective breeding and modern practices in animal husbandry have similarly increased the output of meat, but have raised concerns about animal welfare and environmental damage. Environmental issues include contributions to global warming, depletion of aquifers, deforestation, antibiotic resistance, and growth hormones in industrial meat production. Genetically modified organisms are widely used, although some are banned in certain countries.
The major agricultural products can be broadly grouped into foods, fibers, fuels and raw materials (such as rubber). Food classes include cereals (grains), vegetables, fruits, oils, meat, milk, fungi and eggs. Over one-third of the world's workers are employed in agriculture, second only to the service sector, although the number of agricultural workers in developed countries has decreased significantly over the centuries.