It is well recognised that successful plant breeding work by itself can improve the production of rice in this country by at least 10 per cent if the existing unselected varieties that are now being used by ryots are systematically replaced by improved strains by well planned seed multiplication and distribution schemes. Increases in production may be obtained by crop management as a short term programme, but in the management of a crop, the question of costs comes in and a certain treatment ceases to be useful if it is uneconomical. Growing an improved variety costs the cultivator no additional expenditure. No difficulty has been experienced anywhere about the cultivator being unwilling to take up an improved strain when once he is convinced of its superiority.
NARASINGA RAO M. B. V (Thu,) studied this question.
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