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Weed Management in Single- vs. Twin-Row Peanut (Arachis hypogaea)

Published online by Cambridge University Press:  20 January 2017

Barry J. Brecke  and
Daniel O. Stephenson IV
Barry J. Brecke
Affiliation:
West Florida Research and Education Center, Agronomy Department, Institute of Food and Agricultural Science, University of Florida, 5988 Highway 90, Building 4900, Milton, FL 32583
Daniel O. Stephenson IV*
Affiliation:
West Florida Research and Education Center, Agronomy Department, Institute of Food and Agricultural Science, University of Florida, 5988 Highway 90, Building 4900, Milton, FL 32583
*
Corresponding author's E-mail: dstephenson@uaex.edu
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Abstract

Experiments were conducted in Florida in 2000 through 2003 to evaluate weed management systems in single- and twin-row peanut utilizing either conventional or strip tillage. Diclosulam or flumioxazin preemergence (PRE) or 2,4-DB or imazapic mid-postemergence (MPOST) or late-postemergence (LPOST) was needed for greater than 95% common cocklebur control in conventional- and strip-tillage peanut. In both tillage systems, paraquat + bentazon early-postemergence (EPOST) followed by (fb) 2,4-DB or imazapic MPOST, 2,4-DB or chlorimuron LPOST, or both was required for more than 80% late-season control of Florida beggarweed and control in twin-row was 5 to 10 percentage points above that observed with single-row peanut. Paraquat + bentazon EPOST preceded by a diclosulam or flumioxazin PRE or fb MPOST or LPOST applications provided 80% or greater control of ivyleaf morningglory, and no differences were observed between peanut planting pattern. Paraquat + bentazon EPOST fb imazapic MPOST was the only treatment that provided 90% or greater late-season sicklepod control across all years and tillage methods, and, regardless of tillage, sicklepod control was 7 percentage points better in twin- than single-row peanut. Treatments that contained diclosulam or flumioxazin PRE and paraquat + bentazon EPOST fb a MPOST or LPOST herbicide application increased peanut yield compared to nontreated in conventional- and strip-tillage peanut. Averaged over all herbicide treatments, years, and tillage methods, peanut seeded in twin rows yielded 300 kg/ha more than in single rows.

Keywords

2,4-DBbentazondiclosulamchlorimuronflumioxazinimazapicimazethapyrparaquatpyridatecommon cocklebur, Xanthium strumarium L. # XANSTFlorida beggarweed, Desmodium tortuosum (Sw.) DC. # DEDTOivyleaf morningglory, Ipomoea hederacea (L.) Jacqsicklepod, Senna obtusifolia L. # CASOBpeanut, Arachis hypogaea L. ‘Georgia Green’ and ‘C-99R’Narrow-rowdouble-rowtillageEPOST, early-postemergencefb, followed byLPOST, late-postemergenceMPOST, mid-postemergencePOST, postemergencePRE, preemergenceTSWV, tomato spotted wilt tospovirusWAP, weeks after plantingWAT, weeks after treatment
Type
Research Article
Information
Weed Technology , Volume 20 , Issue 2 , June 2006 , pp. 368 - 376
Copyright
Copyright © Weed Science Society of America 

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Footnotes

1 This research was supported by the Florida Agricultural Experiment Station and approved for publication as Journal Series R-10938.
Current address: Cropping Systems Agronomist, Northeast Research and Extension Center, University of Arkansas, P.O. Box 48, Keiser, AR 72351.

References

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