Nitrogen and Phosphorus Responses of Sorghum and Corn in Uganda

Jowett, David

Nitrogen and Phosphorus Responses of Sorghum and Corn in Uganda

1971

Jowett, David

Seven fertilizer trials testing rates and combinations of N and P were conducted on corn (Zea mays L.), a grain sorghum variety [Sorghum bicolor (L) Muench.] and a sorghum hybrid in Uganda in 1964. In general, corn outyielded sorghum, and showed a better response to applied fertilizer, but the interpretation of the results was complicated by a puzzling significant negative NP interaction for sorghum. The results support the hypothesis that sorghum is better adapted to low soil fertility than is corn in Uganda, but such a conclusion cannot be established on the basis of such slender evidence as is here made available.

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