In subsistence agriculture

1. the farmer produces food to earn more money
2. the farmer grows crop for his own consumption
3. the farmer grows food crop to exchange for other amenities
4. the farmer practices primitive agriculture

Mixed farming means

1. farming of many crops on the same farm
2. growing fodder crop along with other crop
3. cultivation of crops and livestock rearing on the same farm
4. to grow root crops like beet and turnip

In Zaid crop season farmers grow

1. wheat
2. fruits and vegetables
3. cotton
4. pulses

Pesticides and herbicides are used to

1. grow the crop
2. save the crops from the diseases
3. increase fertility of the soil
4. increase the production of the crops