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Accelerating the transfer of wheat breeding gains to farmers : a study of the dynamics of varietal replacement in Pakistan
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Accelerating the transfer of wheat breeding gains to farmers : a study of the dynamics of varietal replacement in Pakistan
In wheat growing areas, slow replacement of older varieties with newer ones in farmers" fields delays the transfer of benefits from breeding research to farmers and heightens the risk of disease epidemics.
Heisey, Paul W., ed. · 1970
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Abstract
In Pakistan, varietal replacement has been slow compared to areas with similar ecological circumstances, and large areas are often dominated by a single variety. To examine the dynamics of the varietal replacement problem in Pakistan, four complementary studies were designed to analyze the wheat varietal and seed system from the breeding of new lines to adoption by farmers. These studies, presented here, cover: the role of the research system in supplying new varieties and of the seed system in disseminating them; sources of information concerning the existence, availability, and characteristics of new varieties; and the influence of yield and other varietal characteristics on farmer demand for varietal replacement. Recommendations are included.
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