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Influence of Stage of Growth and Adjuvants on Fall Panicum Control in Corn with Cyanazine
Published online by Cambridge University Press: 12 June 2017
Abstract
The response of corn (Zea mays L.) and fall panicum (Panicum dichotomiflorum Michx.) to postemergence herbicide applications at three stages of growth was examined. Early postemergence application of cyanazine 2-[[4-chloro-6-(ethylamino)-s-triazine-2-yl] amino]-2- methylpropionitrile at 3.4 kg/ha provided the best control with minimum crop injury and greatest corn yield. A reduction of 25% in corn yield resulted when fall panicum was removed by hand at the seven to eight-leaf stage as compared to removal of plants with two leaves. Various adjuvants increased cyanazine action on both fall panicum and corn in field and greenhouse experiments; however, field trials showed no differences in grain yield at harvest. In the greenhouse, less corn injury was observed with a vegetable oil additive than with other adjuvants.
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- Copyright © 1975 by the Weed Science Society of America