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Published in J Environ Qual 1:200-203 (1972)
© 1972 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Influence of Selected Pesticides on Leaf Elemental Content and Yield of Garden Beans (Phaseolus vulgaris L.)1

C. A. McClurg2 and E. L. Bergman3

ABSTRACT

Five experiments were conducted to determine the effects of selected herbicides, systemic nematocide-insecticides, and a fungicide on foliar elemental content, stand, and yield of garden beans (Phaseolus vulgaris L.). None of the elements analyzed in the leaves nor stand, plant weight, or pod yields were significantly altered by DMPP or disulfoton systemic nematocide-insecticide treatments. Foliar calcium levels were significantly reduced by several herbicide treatments. These treatments also caused greater plant injury and decreased stand and yields. Although benomyl fungicide at a soil concentration of 20 ppm significantly increased foliar calcium content, no general trends in elemental content could be determined. A greenhouse experiment testing effects of soil applied magnesium and EPTC herbicide indicated plant height was significantly reduced by increasing herbicide concentration. Magnesium application significantly increased foliar magnesium content and mean plant weight.

Key Words: trifluralin • nitralin • chloramben • DCPA • chloropropham • dinoseb • disulfoton • EPTC • benomyl fungicide

NOTES

1 Authorized for publication, June 29, 1971 as Paper no. 4007 in the Journal series of the Pennsylvania Agr. Exp. Sta., University Park, Pa.

2 Former Graduate Student now Extension Vegetable Specialist, Univeristy of Maryland, College Park, Md. 20742.

3 Professor of Plant Nutrition, Department of Horticulture, The Pennsylvania State University, University Park, Pa. 16802.

Received for publication July 26, 1971.




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Copyright © 1972 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.