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Weed Control Economics in Bell Pepper (Capsicum annuum) with Napropamide and Hand Weeding

Published online by Cambridge University Press:  12 June 2017

W. Thomas Lanini  and
Michelle Le Strange
W. Thomas Lanini
Affiliation:
Div. Biol. Sci., Sect. Plant Biol., Univ. Calif., Davis, CA 95616
Michelle Le Strange
Affiliation:
Tulare Co., Ag Bldg. Co. Civic Ctr., Visalia, CA 93291
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Abstract

Field studies were conducted in 1990 and 1991 at Davis and Five Points, CA to evaluate weed control with napropamide and hand-weeding and the effect on yield and profitability in transplanted bell pepper. Weed cover 8 wk after transplanting averaged less than 10% in plots hand-weeded biweekly for 6 wk after transplanting. Weed cover at harvest was less than 30% in plots hand-weeded at 8 wk after transplanting. Napropamide treatment reduced weed cover at 8 wk after transplanting an average of 34% compared to untreated plots, but differences declined to 14% at harvest. Time required to hand-weed plots was greater if the interval between weeding was 4 instead of 2 wk. The time needed to hand-weed plots was reduced from 38% to 71% by napropamide treatment. When weeds were excluded by hand-weeding for the entire season, bell pepper yielded 25 810 kg/ha and was 4% to 18% higher than other treatments. Net returns were greater for plots that were hand-weeded the entire season or when napropamide was combined with hand-weeding at 4 and 8 wk after transplanting, compared to other treatments.

Keywords

Napropamide, N,N-diethyl-2-(1-naphthalenyloxy)propanamidebell pepper, Capsicum annuum L. ‘Jupiter.’Cultural weed controleconomicsAbutilon theophrastiAmaranthus retroflexusChenopodium albumEchinochloa crus-galliPortulaca oleraceaSolanum nigrum# ABUTHAMARECHEALECHCGPOROLSOLNI
Type
Research
Information
Weed Technology , Volume 8 , Issue 3 , September 1994 , pp. 530 - 535
Copyright
Copyright © 1994 by the Weed Science Society of America 

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References

Literature Cited

1. Eshel, Y., Katan, J., and Palevitch, D. 1973. Selective action of diphenamid and napropamide in pepper (Capsicum annuum L.) and weeds. Weed Res. 13:379–384.CrossRefGoogle Scholar
2. Frank, J. R., Schwartz, P. H. Jr., and Bourke, J. B. 1988. Insect and weed interactions on bell peppers (Capsicum annuum). Weed Technol. 2:423–428.Google Scholar
3. Henne, R. C. and Poulson, T. L. 1980. Integrated weed control programs for carrots and tomatoes. Proc. Northeast. Weed Sci. Soc. 34:161–166.Google Scholar
4. Kempen, H. M. 1993. Growers Weed Management Guide. Thomson Publications, Fresno, CA. 277 p.Google Scholar
5. Liu, L. C. and Goyal, M. R. 1989. Selective herbicides to control grass seeds in transplanted tomatoes and peppers. J. Agric. Univ. Puerto Rico. 73:231–237.Google Scholar