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Although silicon (Si) is found at much higher concentrations in healthy rice crops than N, P or K, it has received far less study, particularly for upland rice. There are few reports on the existence, causes, and effects of varying Si supplies in different environments. Chemical analyses of soil,...
Advanced rice breeding lines were evaluated in eight environments (two seasons and four N-fertilizer levels) to investigate the effectiveness of selecting genotypes for less favorable low fertilizer input environments. Highly significant Environment (E), Genotype (G) and G x E. interaction effect...
IITA has been breeding maize for Striga tolerance/resistance (STR) since 1982. Populations of Striga hermonthica from Nigeria have been used to challenge maize germplasm. Initially (1982-1984), field screening was done under natural infestation, but variability both within sites and across years ...
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