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Insect and Weed Interactions on Bell Peppers (Capsicum annuum)

Published online by Cambridge University Press:  12 June 2017

J. Ray Prank ,
Paul H. Schwartz Jr.  and
John B. Bourke
J. Ray Prank
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Ft. Detrick, Bldg. 1301, Frederick, MD 21701
Paul H. Schwartz Jr.
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Beltsville, MD 20705
John B. Bourke
Affiliation:
Agric. Chem. Pestic., N.Y. State Agric. Exp. Stn., Cornell Univ., Geneva, NY 14456
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Abstract

Two years of field research were conducted to determine the additive effects of weed cover and insects on pepper production. When weeds covered less than 10% of test plots, the natural insect populations reduced the marketable fruit yield of bell peppers 32% in 1983 and 22% in 1984. When weeds covered 72 or 94% of the test plots, foliage damage due to insects was from 5.8 to 12.1%, respectively. The high percent weed cover and insects reduced yield 99%. The average fresh weight of pepper foliage approached zero as weed cover approached maximum. Foliar levels of iron and aluminum were reduced greatly in peppers grown in competition with a 100% weed cover. The level of boron, copper, phosphorus, and potassium in pepper foliage increased as percent weed cover increased.

Keywords

Bell pepperCapsicum annuum L. cv. Yolo WonderTrifluralinglyphosateinsect population densityweed population densityiron deficiency
Type
Research
Information
Weed Technology , Volume 2 , Issue 4 , October 1988 , pp. 423 - 428
Copyright
Copyright © 1988 by the Weed Science Society of America 

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