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Weed Management with Diclosulam in Strip-Tillage Peanut (Arachis hypogaea)

Published online by Cambridge University Press:  20 January 2017

Andrew J. Price  and
John W. Wilcut
Andrew J. Price
Affiliation:
Crop Science Department, P.O. Box 7620, North Carolina State University, Raleigh, NC 27695-7620
John W. Wilcut*
Affiliation:
Crop Science Department, P.O. Box 7620, North Carolina State University, Raleigh, NC 27695-7620
*
Corresponding author's E-mail: [email protected].
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Abstract

Experiments were conducted at three locations in North Carolina in 1999 and 2000 to evaluate weed management systems in strip-tillage peanut. Diclosulam was evaluated with standard preemergence (PRE), early postemergence, and postemergence (POST) herbicide systems in a factorial treatment arrangement. Preemergence treatments that contained diclosulam controlled common lambsquarters, common ragweed, and eclipta by 100%. Diclosulam PRE controlled entireleaf morningglory by 88%, ivyleaf morningglory by ≥ 90%, pitted morningglory by ≥ 81%, and prickly sida by ≥ 94%. Yellow nutsedge control with diclosulam ranged from 65 to 100% depending on location, whereas POST systems containing imazapic controlled yellow nutsedge by at least 89%, regardless of PRE herbicides. Peanut yields and net returns were reflective of levels of weed management. Systems that included diclosulam PRE plus POST herbicides consistently provided high yields and net returns. Clethodim late POST was required for full-season control of annual grasses, including broadleaf signalgrass, goosegrass, large crabgrass, and Texas panicum.

Keywords

Clethodimdiclosulamimazapicbroadleaf signalgrass, Brachiaria platyphylla (Griseb.) Nash #3 BRAPPcommon lambsquarters, Chenopodium album L. # CHEALcommon ragweed, Ambrosia artemisiifolia L. # AMBELeclipta, Eclipta prostrata L. # ECLALentireleaf morningglory, Ipomoea hederacea var. integriuscula Gray # IPOHGgoosegrass, Eleusine indica (L.) Gaertn. # ELEINivyleaf morningglory, Ipomoea hederacea (L.) Jacq. # IPOHElarge crabgrass, Digitaria sanguinalis (L.) Scop. # DIGSApitted morningglory, Ipomoea lacunosa L. # IPOLAprickly sida, Sida spinosa L. # SIDSPTexas panicum, Panicum texanum Buckl. # PANTEyellow nutsedge, Cyperus esculentus L. # CYPESpeanut, Arachis hypogaea L. ‘NC 10C’ and ‘NC 12C’Economic analysisEPOST, early postemergencefb, followed byPOST, postemergencePPI, preplant incorporatedPRE, preemergence
Type
Research
Information
Weed Technology , Volume 16 , Issue 1 , March 2002 , pp. 29 - 36
Copyright
Copyright © Weed Science Society of America 

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