Crop Science Journal of Natural Resources and Life Sciences Education
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Published in Crop Sci 9:388 (1969)
© 1969 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Damage to Alfalfa by the Alfalfa Weevil (Hypera Postica Gyllenhal) as Related to Infestation by Henbit (Lamium Amplexicaule L.1

T. W. Waldrep, D. S. Chamblee, Dorsey Daniel, W. A. Cope and T. H. Busbice2

A relationship between herbicide effectiveness in weed control and spring feeding damage by alfalfa weevil larvae was observed in field studies in which herbicides were being evaluated for use in establishing certain forage legumes. In general, alfalfa plots with 50% or more ground cover by henbit showed 75 % or more terminal damage by the alfalfa weevil larvae. Much less damage was noted on plots containing few or no weeds.

Key Words: Alfalfa weevil • Legume establishment

1 Joint contribution from Crop Science Department, North Carolina State University Agricultural Experiment Station and the Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture.

2 Assistant Professor of Crop Science, Professor of Crop Science, Research Assistant in Crop Science, North Carolina Agr. Exp. Sta., Raleigh 27607; and Research Agronomists, CR, ARS, USDA, Raleigh, N. C.

Received for publication October 7, 1968.




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Copyright © 1969 by the Crop Science Society of America.