<P> Extensive commercial farming: This is a system of agriculture in which relatively small amounts of capital or labor investment are applied to relatively large areas of land . At times, the land is left fallow to regain its fertility . It is mostly mechanized because of the cost and availability of labor . It usually occurs at the margin of the agricultural system, at a great distance from market or on poor land of limited potential and is usually practiced in the tarai regions of southern Nepal . Crops grown are sugarcane, rice and wheat . </P> <P> Plantation agriculture: Plantation is a large farm or estate usually in a tropical or sub-tropical country where crops are grown for sale in distant markets rather than local consumption . </P> <P> Commercial grain farming: This type of farming is a response to farm mechanisation and it is the major type of activity in the areas of low rainfall and low density of population where extensive farming is practised . Crops are prone to the vagaries of weather and droughts and mono culture of wheat is the general practice . </P> <P> With increases in both human and animal populations in the Indian arid zone, the demand for grain, fodder, and fuel wood is increasing . Agricultural production in this region is low due to the low and uneven distribution of rainfall (100--400 mm yr "1) and the low availability of essential mineral nutrients . These demands can be met only by increasing production levels of these Aridisols through adoption of farming technologies that improve physical properties as well as biological processes of these soils . Alternate farming systems are being sought for higher sustainable crop production at low input levels and to protect the soils from further degradation . </P>

What are the types of agriculture in india