(a) Subsistence agriculture
(i) It is the cultivation of crops for local consumption on small farms,
(ii) They use primitive tools and implements,
(iii) Old seeds are used,
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(iv) Food crops are cultivated,
(v) The produce is less,
(vi) It is practiced in densely populated countries like India, China.
(b) Commercial agriculture
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(i) Cultivation of seasonal cash crops for the market to obtain cash,
(ii) Farms are larger than in subsistence farming,
(iii) Crops like cotton, sugarcane, jute are cultivated.
(c) Plantation
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(i) Scientific and systematic cultivation of a single crop on a large scale resembling factory line production,
(ii) Farms are very large,
(iii) Perennial/tree crops are cultivated,
(iv) Yield from the field is obtained after 5 to 6 years,
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(v) They arc export oriented crops like tea, coffee and rubber.