In villages across India, farming is the main production activity. 
The first requirement is land, and other natural resources such as water, forests, minerals. Farming is the main production activity in Palampur. But remember that there is a basic constraint in raising farm production. Land area under cultivation is practically fixed.
To grow more than one crop on a piece of land during the year is known as multiple cropping. It is the most common way of increasing production on a given piece of land. All farmers in Palampur grow at least two main crops. 
the other way to increase production and productivity is use of the following inputs of mordern methods of farming 
HYV seeds + chemical fertilizers+ pesticides + better irrigation facilities 
this package of inputs led to green revolution that came in late 1960s. 
benefits of green revolution 
increase in production of food grains so that India could become self reliant 
increase in productivity 
drawbacks of green revolution 
excessive use of chemical fertilizers led to loss of soil fertility 
since HYV seeds need lot of water , it led to depletion of ground water table

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