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Ridged Rows and Winter Cover Crops in Tobacco Production¹

ABSTRACT

Ridged rows and winter cover crops were used to control erosion and promote good tilth in 1-year tobacco rotations. Studies conducted over a 5-year period comparing flat cultivation versus ridged rows showed that tobacco yields were increased substantially by ridging in wet years. In dry years, yields on ridged and flat plots were essentially the same.

Winter cover crops and their management affected both the yield and quality of the succeeding tobacco crop. Ryegrass alone reduced yield and vetch alone lowered quality. Highest yields and quality of tobacco followed mixed cover crops of rye and vetch or ryegrass and vetch.

Late turning of the mixed cover crops was better than early turning. Aside from supplying more organic residues to the soil, late turning promoted the larger yield of tobacco, of as good a quality as early turning.

¹ Joint contribution of the Eastern Section of Soil and Water Management, Soil and Water Conservation Research Branch, A.R.S., U.S.D.A., and the Maryland Agr. Exp. Sta. Contribution No. 2761, and Scientific Article No. A-593 of the Experiment Station. Presented before Div. VI, Soil Science Society of America, Cincinnati, Ohio. Nov. 15, 1956.

² Soil Scientists, Beltsville, Maryland.

Received for publication November 21, 1956. Accepted for publication January 14, 1957.