The effect of foliar application of N, P, K and S on the grain yield and yield components of corn was investigated. The results showed that neither the fifteen factorial treatments alone nor all the twenty-eight treatments used had a significant effect, (P<0.05) on the grain yield and yield components, However, the grain yield of the factorial treatments was positively and significantly correlated with seed size, (P<0.01) and car length, (P <0.05), but both yield components did not significantly. influence grain yield. Based upon these results, foliar application of micro-nutrients on corn to increase grain yields may not be worthwhile.
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