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Horsenettle (Solanum carolinense) Control With a Field Corn (Zea mays) Weed Management Program

Published online by Cambridge University Press:  20 January 2017

Cory M. Whaley  and
Mark J. Vangessel
Cory M. Whaley
Affiliation:
Plant and Soil Sciences Department, University of Delaware, Research and Education Center, Georgetown, DE 19947
Mark J. Vangessel*
Affiliation:
Plant and Soil Sciences Department, University of Delaware, Research and Education Center, Georgetown, DE 19947
*
Corresponding author's E-mail: [email protected].
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Abstract

Field studies were conducted at three sites in Delaware from 1997 to 1999 to evaluate fall glyphosate applications followed by postemergence (POST) field corn herbicides on horsenettle control and shoot densities. The fall treatments were either no fall treatment or 2.2 kg ai/ha glyphosate as a preharvest treatment in soybean at least 2 wk prior to frost. POST treatments were applied the following spring in no-tillage field corn 4 wk after planting (WAP) and included glyphosate, CGA 152005 plus primisulfuron plus dicamba, halosulfuron plus dicamba, atrazine plus dicamba, nicosulfuron plus rimsulfuron plus atrazine plus dicamba, or nicosulfuron plus dicamba. The fall glyphosate application delayed horsenettle shoot emergence in the spring and resulted in > 90% control at the time of POST in-crop applications. At 11 WAP, the highest horsenettle control was observed with a fall glyphosate application followed by POST in-crop treatments of CGA 152005 plus primisulfuron plus dicamba, halosulfuron plus dicamba, or nicosulfuron plus rimsulfuron plus dicamba and no fall treatment followed by CGA 152005 plus primisulfuron plus dicamba.

Keywords

AtrazineCGA 152005, 1-(4-methoxy-6-methyl-triazin-2-yl)-3-[2-(3,3,3-trifluoropropyl)-phenylsulfonyl]-urea, proposed common name prosulfurondicambaglyphosatehalosulfuronnicosulfuronprimisulfuronrimsulfuronhorsenettle, Solanum carolinense L. #3 SOLCAcorn, Zea mays L.soybean, Glycine max (L.) MerrIntegrated weed managementperennial weed controlpreharvest herbicide applicationCOC, crop oil concentrateNIS, nonionic surfactantPOST, postemergencePRE, preemergenceUAN, urea ammonium nitrateWAP, weeks after planting
Type
Research
Information
Weed Technology , Volume 16 , Issue 2 , June 2002 , pp. 293 - 300
Copyright
Copyright © Weed Science Society of America 

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