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Published in Soil Sci Soc Am J 25:401-403 (1961)
© 1961 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Runoff and Erosion Losses from Mexico Silt Loam in Relation to Fertilization and Other Management Practices1

F. D. Whitaker, V. C. Jamison and J. F. Thornton2

ABSTRACT

Results from the runoff-erosion plots on claypan soils at McCredie, Missouri, are summarized. With improvement due to fertilization and sod rotations, the performance of these soils approaches that of the better soils of Missouri. Where adequate fertility is supplied the chief advantage of growing corn in a sod-based rotation over continuous corn is the reduction in the time the soil is without protective cover. The critical period found for erosion losses from corn was from the time of seedbed preparation until the growing crop provided an adequate canopy. Erosion losses for rotation corn were about 60% as high as for continuous corn from intense rain storms that occurred during this period. Average soil and water losses from adequately fertilized soil were less for corn in rotation than for continuous corn during the corn growing season. Seedbed preparation by subtillage so as to leave shredded cornstalks on or near the surface reduced erosion losses.

NOTES

1 Contribution from Soil and Water Conservation Research Division, ARS, USDA, and the Missouri Agr. Exp. Sta., Columbia, as Jour. Series No. 2148. Presented before Div. VI, Soil Science Society of America, Dec. 7, 1961, at Chicago, Ill.

2 Engineering Aide, Soil Scientist, and Agricultural Engineer, respectively, USDA, Columbia, Mo.

Received for publication November 19, 1960. Accepted for publication February 14, 1961.






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