Mostrando ítems 31-40 de 85
Research for marginal environments: Are we underinvested?
Evidence is presented to show that adoption of modern wheat varieties in rainfed marginal environments of the developing world has lagged substantially compared to adoption in favoured well-watered areas. Possible reasons ...
The rate of crop varietal replacement on farms: measures and empirical results for wheat
The rate of crop varietal replacement on [arms is an important measure of the impacts of plant breeding programmes, the degree of varietal diversification over time, and the potential exposure to disease epidemics due to ...