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Climatic Index of Wind Erosion Conditions in the Great Plains¹

ABSTRACT

A climatic index based on effective precipitation and wind velocity for a 3-year period ending May 31 can be used to predict with considerable certainty the severity of wind erosion conditions during the succeeding calendar year. On the basis of predicted severity of wind erosion conditions, farmers can be advised whether or not they should initiate special methods to control impending wind erosion.

¹ Contribution from the Soil and Water Conservation Research Division, ARS, USDA, in cooperation with the Kansas Agr. Exp. Sta., Department of Agronomy Contribution No. 793. Presented before Div. VI, Soil Science Society of America, Aug. 20, 1962, at Ithaca, N. Y.

² Research Investigations Leader and Soil Scientists, respectively, USDA, Manhattan. Kans. Grateful acknowledgment is due S. W. Chambers of the U. S. Weather Bureau Station at Dodge City, Kans., and A. B. Erhart, Superintendent of the Garden City Branch Experiment Station, Garden City, Kans., for permission to utilize unpublished dust storm data contained in the original daily records.

Received for publication August 21, 1962. Accepted for publication November 1, 1962.