Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 1 May 1970
Published in Agron J 62:405-407 (1970)
© 1970 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Dalapon Residues in Alfalfa as Affected by Harvesting and Dehydrating1

D. L. Linscott, R. D. Hagin and M. J. Wright2

The herbicide dalapon, (2,2-dichloropropionic acid) was applied to ‘Cayuga’ alfalfa (Medicago sativa L.) at different growth stages and dehydrated at harvest in a high speed commercial dehydrator. Some dalapon was lost after chopping in the field and prior to dehydration. A large part of the residual dalapon was lost from forage during dehydration. Losses were attributed to distillation of the intact dalapon molecule, destruction by heat, and enzyme-induced degradation.

Key Words: Herbicides • Degradation • Distillation • Heat • Gas chromatography

1 Cooperative investigations of the Crops Research Division, Agricultural Research Service, U.S. Dept. of Agriculture, and the Cornell University Agr. Exp. Sta., Ithaca, N.Y. Dept. of Agronomy Paper No. 864. This work was supported in part by a grant from the Dow Chemical Company to Cornell University.

2 Research Agronomist, Biological Research Technician, and Professor respectively, Crops Research Division, ARS, USDA and Cornell University.

Received for publication October 27, 1969.




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Environmental Quality		 The Plant Genome
Copyright © 1970 by the American Society of Agronomy.