In Palampur, the yield of wheat grown from the traditional varieties was 1300 kg per hectare. With HYV seeds, the yield went up to 3200 kg per hectare.
During your field visit talk to some farmers of your region. Find out: 1) What kind of farming methods (modern or traditional or mixed) do the farmers use? 2) What are the sources of irrigation? 3) How much of the cultivated land is irrigated? 4) From where do farmers obtain the inputs that they require?
Land being a natural resource, it is necessary to be careful in its use. Scientific reports indicate that the modern farming methods have overused the natural resource base.
In many areas, Green Revolution is associated with the loss of soil fertility due to increased use of chemical fertilisers. Also, continuous use of groundwater for tubewell irrigation has led to the depletion of the water-table.
Environmental resources, like soil fertility and groundwater, are built up over years. Once destroyed it is very difficult to restore them. We must take care of the future environment to ensure development of agriculture.
Chemical fertilisers provide minerals which dissolve in water and are immediately available to plants. But these may not be retained in the soil for long. They may escape from the soil and pollute groundwater, rivers and lakes. Chemical fertilizers can also kill bacteria and other micro-organisms in the soil. This means some time after their use, the soil will be less fertile than ever before.