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Modeling the Effects of Weed Interference Periods and Insects on Bell Peppers (Capsicum annuum)

Published online by Cambridge University Press:  12 June 2017

J. Ray Frank
Agric. Res. Serv., U.S. Dep. Agric., Foreign Disease-Weed Sci. Res., Bldg. 1301, Ft. Detrick, Frederick, MD 21702
Paul H. Schwartz Jr.
Agric. Res. Serv., U.S. Dep. Agric., Pesticide Assess. Lab., Beltsville, MD, 20705
William E. Potts
USDA-ARS/Univ. Maryland Statistical Consulting Serv., Beltsville, MD 20705


Field experiments were conducted at Frederick, MD, in 1985 and 1986 to determine effects of weed-interference periods and insects on bell peppers. Weed-interference periods of approximately 40 and 60 d reduced both bell pepper fruit number and weight 10 and 50%, respectively. Bell pepper foliage weight was reduced 10 and 50% with approximately 20- and 50-day weed-interference periods. In 1985 and 1986, insect populations were low with an average of 10 and 3% of the pepper fruit infested, respectively. Most infested fruit was damaged by European corn borer. No significant differences in insect infestation of fruit as related to time of weed-interference periods were noted.

Special Topics
Copyright © 1992 by the Weed Science Society of America 

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