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Weed Management in Transplanted Bell Pepper (Capsicum frutescens) with Clomazone and Rimsulfuron

Published online by Cambridge University Press:  12 June 2017

John A. Ackley ,
Henry P. Wilson  and
Thomas E. Hines
John A. Ackley
Affiliation:
Eastern Shore Agriculture Research and Extension Center, Virginia Polytechnic Institute and State University, Painter, VA 23420-2827
Henry P. Wilson
Affiliation:
Eastern Shore Agriculture Research and Extension Center, Virginia Polytechnic Institute and State University, Painter, VA 23420-2827
Thomas E. Hines
Affiliation:
Eastern Shore Agriculture Research and Extension Center, Virginia Polytechnic Institute and State University, Painter, VA 23420-2827
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Abstract

In field studies, in 1993, 1994, and 1995, clomazone at 390 g ai/ha and rimsulfuron at 35 g ai/ha were evaluated preplant incorporated (PPI) and postemergence (POST), respectively, for weed control and crop response in transplanted ‘Keystone RG3’ bell pepper. Clomazone did not injure bell pepper. Common lambsquarters and jimsonweed control was 77 to 95% by clomazone treatments but was variable by rimsulfuron treatments at 41 to 93% common lambsquarters control and 42 to 68% jimsonweed control; common ragweed control by both herbicides was unacceptable. Injury by rimsulfuron to bell pepper in the field was 19 to 47% at 21 DAT. In the greenhouse, injury to Keystone RG3 and three additional bell pepper varieties, ‘Camelot,’ ‘Jupiter,’ and ‘Memphis’ was similar at 44 to 62% by rimsulfuron at 17 to 35 g/ha POST, and bell pepper had lower height and dry weight than untreated controls. In the greenhouse, jimsonweed control was below 49% and black nightshade control was below 23% by 17 to 35 g/ha rimsulfuron. In these studies, clomazone controlled common lambsquarters and jimsonweed without injury to bell pepper. The solanaceous weeds treated in this study were not well controlled by rimsulfuron, and bell pepper was not sufficiently tolerant to rimsulfuron to permit its use in this crop.

Keywords

Clomazone, 2-[(2-chlorophenyl)methyl]-4,4-dimethyl-3-isoxazolidionerimsulfuron, N-[[(4,6- dimethoxy-2-pyrimidinyl)amino]carbonyl]-3-(ethylsulfonyl)-2- pyridinesulfonamideblack nightshade, Solanum nigrum L. # SOLNIcommon lambsquarters, Chenopodium album L. # CHEALcommon ragweed, Ambrosia artemsiifolia L. # AMBELjimsonweed, Datura stramonium L. # DATSTbell pepper, Capsicum frutescens L., ‘Camelot,’ ‘Jupiter,’ ‘Keystone RG3,’ ‘Memphis.'Postemergencepreplant incorporatedclomazonerimsulfuronAmbrosia artemsiifoliaChenopodium albumDatura stramoniumSolanum nigrumAMBELCHEALDATST SOLNIDAP, days after transplantingDAT, days after treatmentPOST, postemergencePPI, preplant incorporatedWAT, weeks after treatment
Type
Research
Information
Weed Technology , Volume 12 , Issue 3 , September 1998 , pp. 458 - 462
Copyright
Copyright © 1998 by the Weed Science Society of America 

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References

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