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Integrated Johnsongrass (Sorghum halepense) Management in Field Corn (Zea mays) with Reduced Rates of Nicosulfuron and Cultivation

Published online by Cambridge University Press:  12 June 2017

Enrique Rosales-Robles ,
James M. Chandler ,
Scott A. Senseman  and
Eric P. Prostko
Enrique Rosales-Robles
Affiliation:
Department of Soil and Crop Sciences, Texas A & M University, College Station, TX 77840
James M. Chandler*
Affiliation:
Department of Soil and Crop Sciences, Texas A & M University, College Station, TX 77840
Scott A. Senseman
Affiliation:
Department of Soil and Crop Sciences, Texas A & M University, College Station, TX 77840
Eric P. Prostko
Affiliation:
Texas A & M University Research and Extension Center, Stephenville, TX 76401
*
Corresponding author's E-mail: [email protected].
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Abstract

Johnsongrass, a tall, coarse, perennial grass, is the second most common and troublesome weed in field corn in Texas. Field experiments were conducted in 1996 to 1998 to evaluate an integrated johnsongrass management program in bedded and irrigated field corn. Nicosulfuron at 26.3 g ai/ha applied banded over the row to 50% of the planted area plus one cultivation resulted in johnsongrass control of aboveground and rhizome biomass and in corn yield comparable to the labeled rate (35 g ai/ha) when applied two consecutive years in the same plots. This treatment reduced cost 27% and reduced herbicide input 62% compared to nicosulfuron applied broadcast at labeled rate without cultivation. Economic benefits of this johnsongrass management program are promising for field corn producers.

Keywords

Nicosulfuron, 2-[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]-N-N-dimethyl-3-pyridinecarboxamidejohnsongrass, Sorghum halepense (L.) Pers. #SORHAcorn, Zea mays L. ‘Mycogen 9220,’ ‘Ciba 4575.’Integrated weed managementSORHABAND, banded applicationBCAST, broadcast applicationCULT, cultivationIWM, integrated weed managementPOST, postemergencePRE preemergenceWAT, weeks after treatment
Type
Research
Information
Weed Technology , Volume 13 , Issue 2 , June 1999 , pp. 367 - 373
Copyright
Copyright © 1999 by the Weed Science Society of America 

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