Zinc Availability in Calcareous Michigan Soils as Influenced by Phosphorus Level and Temperature
1964
Ellis, Roscoe | Davis, J. F. | Thurlow, D. L.
Yield of corn was increased from 7,504 to 8,680 pounds per acre by an application of 4 pounds of Zn per acre to a calcareous Wisner clay loam in a field experiment. In a greenhouse experiment with the same soil, yield, Zn concentration in the plant tissue, and total Zn uptake by corn were decreased when soil temperature was decreased from 75 to 55°F. Ten pounds of Zn per acre increased the Zn concentration in the corn tops. In a greenhouse experiment with a Kawkawlin-Wisner loam, 10 pounds of Zn per acre increased the yield of field beans when the treatments included high levels of either applied or residual P. In greenhouse experiments, applications of 437 and 655 pounds of P per acre decreased the Zn concentration in field beans and corn. In most experiments, a negative correlation was noted between Zn and P concentrations in the plant tissue.
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