Some Effects of Kudzu versus Continuous Corn on Soil Properties and Crop Yields1
- Howard V. Jordan,
- S. P. Crockett and
- Charles E. Bardsley2
In a continuing study of means of improving a soil with genetic pan, kudzu, a deep-rooted perennial legume, was introduced in rotation with corn. Following 4 years of kudzu, the nitrogen, organic carbon, and exchangeable potassium in the 0 to 12-inch soil were higher than in continuous corn plots. The bulk density was lower, and the porosity, aggregation, and intrinsic permeability were higher on the kudzu plots. Evidence, both from soil moisture studies and from uptake of deeply-placed radioactive phosphorus, indicated deeper rooting of corn following the kudzu. Corn yields were increased as a result of growing the legume, and, particularly in the absence of the legume, by supplemental nitrogen. Some data on the persistence of these effects are reported.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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