Phosphorus Uptake by Corn (Zea mays L.) Under No-Tillage and Conventional Practices
1966
Singh, T. A. | Thomas, G. W. | Moschler, W. W. | Martens, D. C.
Field investigations were conducted in 1963 and 1964 on Wellston loam to compare uptake of applied phosphate under no-tillage and conventional tillage methods of growing corn. P³² labelled superphosphate was applied to the soil surface in no-tillage and rototilled into the upper 5 inches of the soil for conventional tillage. In 1963 no significant differences in fertilizer P uptake were found but the total P content of corn leaves was higher where the phosphate was applied on the surface, at the first two sampling dates. There were no significant differences at the last two sampling dates. In 1964 both the uptake of fertilizer P and total P content of the corn leaves were larger at the first sampling date where the phosphate was surface applied than where it was incorporated into the soil. No significant differences occurred at the last three sampling dates.
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