Fertiliser Application on High-Yielding Varieties

Shyamal Roy Application of chemical fertilisers was confined till recently to one or two major foodgrain crops and a few commercial crops raised mainly under irrigation. The reasons for such restricted use were partly economic and partly sociological The earlier varieties of crops were not very responsive to fertiliser application, and the crop-fertiliser price ratios were generally unfavourable so that returns on fertiliser application were not attractive.