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Effect of PRE and POST-Directed Herbicides for Season-Long Nutsedge (Cyperus spp.) Control in Bell Pepper

Published online by Cambridge University Press:  20 January 2017

M. Ryan Miller  and
Peter J. Dittmar
M. Ryan Miller*
Affiliation:
Department of Horticultural Sciences, University of Florida, Gainesville, FL 32611
Peter J. Dittmar
Affiliation:
Department of Horticultural Sciences, University of Florida, Gainesville, FL 32611
*
Corresponding author's E-mail: michaelmiller@ufl.edu.
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Abstract

Fomesafen and imazosulfuron are two recently registered herbicides for use in Florida bell pepper. Field studies were conducted in 2012 and 2013 to evaluate PRE, POST-directed (POST-DIR), and PRE followed by (fb) POST-DIR control programs utilizing these new herbicides for nutsedge control in Florida bell pepper. PRE treatments included: S-metolachlor at 0.71 and 1.07 kg ai ha−1, fomesafen at 0.28 and 0.42 kg ai ha−1, S-metolachlor at 0.71 kg ha−1 + fomesafen 0.28 kg ha−1, and S-metolachlor at 1.07 kg ha−1 + fomesafen at 0.42 kg ha−1. POST-DIR treatments included imazosulfuron at 0.21 and 0.34 kg ai ha−1. PRE fb POST-DIR treatments included S-metolachlor at 0.71 or 1.07 kg ha−1 fb imazosulfuron at 0.21 kg ha−1 and fomesafen at 0.28 or 0.42 kg ha−1 fb imazosulfuron at 0.21 kg ha−1. Nutsedge control in both years at 28 d after planting was similar among all PRE treatments providing ≤ 60% control. The addition of imazosulfuron POST-DIR following S-metolachlor or fomesafen PRE provided greater control compared to S-metolachlor or fomesafen alone 14, 21, and 28 d after the POST-DIR application. Plots treated with S-metolachlor resulted in lower marketable weight and marketable fruit count compared to fomesafen in 2012; however, this was not observed in 2013. The results for these studies indicate the importance of a PRE fb POST-DIR herbicide for nutsedge control and that fomesafen or S-metolachlor PRE fb imazosulfuron POST-DIR provides growers with a viable tool capable of achieving season-long control of nutsedge in bell pepper.

Fomesafen e imazosulfuron son dos herbicidas recientemente registrados para uso en pimentón en Florida. Se realizaron estudios de campo en 2012 y 2013 para evaluar programas de control PRE, POST-dirigido (POST-DIR), y PRE seguido por (fb) POST-DIR utilizando estos nuevos herbicidas para el control de Cyperus spp. en pimentón en Florida. Los tratamientos PRE incluyeron: S-metolachlor a 0.71 y 1.07 kg ai ha−1, fomesafen a 0.28 y 0.42 kg ai ha−1, S-metolachlor a 0.71 kg ha−1 + fomesafen 0.28 kg ha−1, y S-metolachlor a 1.07 kg ha−1 + fomesafen 0.42 kg ha−1. Los tratamientos POST-DIR incluyeron imazosulfuron a 0.21 y 0.34 kg ai ha−1. Los tratamientos PRE fb POST-DIR incluyeron S-metolachlor a 0.71 ó 1.07 kg ha−1 fb imazosulfuron a 0.21 kg ha−1, y fomesafen a 0.28 ó 0.42 kg ha−1 fb imazosulfuron a 0.21 kg ha−1. El control de Cyperus spp. en ambos años a 28 d después de la siembra fue similar entre todos los tratamientos PRE siendo ≤ 60% de control. El agregar imazosulfuron POST-DIR después de S-metolachlor o de fomesafen PRE brindó mayor control al compararse con S-metolachlor o fomesafen solos 14, 21, y 28 d después de la aplicación POST-DIR. Los lotes tratados con S-metolachlor resultaron en menor peso y número de fruto comercializable al compararse con fomesafen en 2012, sin embargo esto no se observó en 2013. Los resultados de estos estudios indican la importancia de herbicidas PRE fb POST-DIR para el control de Cyperus spp. y que fomesafen o S-metolachlor PRE fb imazosulfuron POST-DIR brindan a los productores una herramienta viable capaz de alcanzar control de Cyperus spp. a lo largo de toda la temporada de crecimiento del pimentón.

Keywords

FomesafenimazosulfuronS-metolachlornutsedge, Cyperus spp.bell pepper, Capsicum annuum L.Methyl bromide alternativevegetable weed managementweed control in bell pepper
Type
Research Article
Information
Weed Technology , Volume 28 , Issue 3 , September 2014 , pp. 518 - 526
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

Anonymous (2007) Dual Magnum 7.62 EC herbicide label. Greensboro, NC: Syngenta Crop Protection. 9 pGoogle Scholar
Anonymous (2011a) Reflex herbicide label. Greensboro, NC: Syngenta Crop Protection. 22 pGoogle Scholar
Anonymous (2011b) League herbicide label. Walnut Creek, CA: Valent U.S.A. Corporation. 8 pGoogle Scholar
Bangarwa, SK, Norsworthy, JK, Gbur, EE (2009) Cover crop and herbicide combinations for weed control in polyethylene-mulched bell pepper. HortTechnology 19:405–410 CrossRefGoogle Scholar
Dowler, CC (1987) Efficacy of some recently developed herbicides applied through irrigation. Page 20 in Proceedings of the Southern Weed Science Society. Orlando, FL: SWSS. Vol. 40 Google Scholar
[EPA] Environmental Protection Agency (2011) The Phase Out of Methyl Bromide. http://www.epa.gov/ozone/mbr/. Accessed August 14, 2013Google Scholar
Gilreath, JP, Motis, TN, Santos, BM (2005) Cyperus spp. control with reduced methyl bromide plus chloropicrin doses under virtually impermeable films in pepper. Crop Prot 24:285–287 CrossRefGoogle Scholar
Gilreath, JP, Santos, BM (2005) Efficacy of 1,3-Dicloropropene plus chloropicrin in combination with herbicides on purple nutsedge (Cyperus rotundus) control in tomato. Weed Technol 19:101–104 Google Scholar
Hauser, EW (1962) Development of purple nutsedge under field conditions. Weeds 10:315–321 CrossRefGoogle Scholar
Henry, GM, Sladek, BS, Hephner, AJ, Cooper, T (2012) Purple nutsedge (Cyperus rotundus L.) control in bermudagrass turf with imazosulfuron. Weed Technol 26:304–307 CrossRefGoogle Scholar
Holm, LG, Plucknett, DL, Pancho, JW, Herberger, JP (1977) The World's Worst Weeds. Distribution and Biology. Honolulu, HI: University of Hawaii Press. 609 pGoogle Scholar
Lament, WJ Jr. (1993) Plastic mulches for the production of vegetable crops. HortTechnology 3:35–39 CrossRefGoogle Scholar
Morales-Garcia, D, Stewart, KA, Seguin, P, Madramootoo, C (2010) Saline drip irrigation and polyethylene mulch on yield and water use efficiency of bell pepper. Int J Veg Sci 16:3–14 CrossRefGoogle Scholar
Morales-Payan, JP, Santos, BM, Stall, WM, Bewick, TA (1997) Effects of purple nutsedge (Cyperus rotundus) on tomato (Lycopersicon esculentum) and bell pepper (Capisum annuum) vegetative growth and fruit yield. Weed Technol 11:672–676 CrossRefGoogle Scholar
Motis, TN, Locascio, SJ, Gilreath, JP (2004) Critical yellow nutsedge-free period for polyethylene-mulched bell pepper. HortScience 39:1045–1049 CrossRefGoogle Scholar
Motis, TN, Locascio, SJ, Gilreath, JP, Stall, WM (2003) Season-long interference of yellow nutsedge (Cyperus esculentus) with polyethylene-mulched bell pepper (Capiscum annuum). Weed Technol 17:543–549 CrossRefGoogle Scholar
Riar, DS, Norsworthy, JK (2011) Use of imazosulfuron in herbicide programs for drill-seeded rice (Orzya sativa) in the mid-South United States. Weed Technol 25:548–555 CrossRefGoogle Scholar
Santos, BM, McAvoy, EJ, Ozores-Hampton, M, Dittmar, PJ, Vallad, GE, Webb, SE, Olson, SM (2013) Pepper Production in Florida. Chapter 8. Pages 121–132. Vegetable Production Handbook for Florida. Olson, SM and Santos, B Gainesville, FL: Institute of Food and Agricultural Sciences Extension, University of Florida Google Scholar
[USDA] U.S. Department of Agriculture/Agricultural Marketing Service (2005) United States Standards for Grades of Sweet Peppers. http://www.ams.usda.gov/AMSv1.0/getfile?dDocName=STELPRDC5050318. Accessed October 3, 2013Google Scholar
[USDA] U.S. Department of AGriculture/Economics, Statistics, and Market Information System (2013) Vegetables annual summary. http://usda.mannlib.cornell.edu/MannUsda/viewDocumentInfo.do?documentID=1183 Accessed October 3, 2013Google Scholar
Webster, TM (2005a) Patch expansion of purple nutsedge (Cyperus rotundus) and yellow nutsedge (Cyperus esculentus) with and without polyethylene mulch. Weed Sci 53:839–845 CrossRefGoogle Scholar
Webster, TM (2005b) Mulch type affects growth and tuber production of yellow nutsedge (Cyperus esculentus) and purple nutsedge (Cyperus rotundus). Weed Sci 53:834–838 CrossRefGoogle Scholar
Wills, GD (1987) Description of purple and yellow nutsedge (Cyperus rotundus and C. esculentus). Weed Technol 1:2–9 CrossRefGoogle Scholar