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Interaction between herbicides (nicosulfuron and 2,4-D+ MCPA) and nitrogen on weed control of maize (Zea mays)

Document Type : Research Paper

Author

Associate Professor, Department of Agriculture, Payame Noor University, Tehran, Iran

Abstract

To evaluate the impact from the interaction of nitrogen and herbicides on weed control of maize along with the yield and yield components of maize, an experiment has been conducted in a randomized completer block design as factorial arrangement with three replications at Tarbiat Modares University. The first factor includes nicosulfuron (2 l.ha-1), 2,4-D+ MCPA (1.5 L.ha-1), weed-infesting, and weed free (hand hoeing) as control. The second factor is application of 350 kg.ha-1 nitrogen from urea source and no nitrogen application as control. Results indicate that application of nitrogen boosts nicosulfuron efficacy in controlling broad- and narrow-leaved weeds, though it does not affect 2,4-D+ MCPA efficacy in controlling broad-leaved weeds. The application of herbicide and nitrogen has no significant effect on corn yield components, but the number of grains per row increase significantly when both nicosulfuron and nitrogen are applied together. Application of nicosulfuron and nitrogen increases the grain yield by 94%, compared with sole application of nicosulfuron. Application of both nitrogen and 2,4-D+ MCPA has no effect on corn grain yield. Results show that the application of nicosulfuron and nitrogen can be the best option for satisfactory weed control and maximum grain yield in the corn.

Keywords

References
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Journal of Crops Improvement
Volume 22, Issue 3
September 2020
Pages 373-384
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