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This article in CS

  1. Vol. 15 No. 4, p. 581-583
     
    Received: Jan 8, 1975


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doi:10.2135/cropsci1975.0011183X001500040038x

Genotypic Response to Potassium in Soybeans1

  1. A. K. Walker and
  2. J. A. Schillinger2

Abstract

Abstract

Soybean [Glycine max (L.) Merr.] genotypes usually yield about the same under high K fertility as under moderate K fertility. The objective of this study was to verify the results of a preliminary screening test, which revealed that the FC31702 and ‘Lincoln’ genotypes were responsive and nonresponsive, respectively, to high K fertility.

FC31702 and Lincoln soybeans were grown under moderate (approximately 130 kg K/ha) and high (approximately 193 kg K/ha) K fertility on a Beltsville silt loam soil for 3 years. ‘Cutler,’ a recommended cultivar for Maryland, also was included the last 2 test years. Seed yield and percent K in the leaves during the growing season were determined.

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