Evaluation of water withholding on herbicide efficacy in maize weed control in low and high input conditions

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Yaghoobi Saeed Reza; Dehghani Mohsen; Mokhtassi-Bidgoli Ali; Asilan Kamal Sadat

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ISSN: 2588-4824

Journal Paper

Paper Information

Journal: Iranian Journal of Field Crop Science Year:2021 | Volume: | Issue: Page(s): 29-40

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Title

Evaluation of water withholding on herbicide efficacy in maize weed control in low and high input conditions

Author(s)

Yaghoobi Saeed Reza | Dehghani Mohsen | Mokhtassi-Bidgoli Ali | Asilan Kamal Sadat | Issue Writer Certificate

Keywords

Crop nutritionQ4

Drought stressQ4

herbicideQ4

weed managementQ4

Yield componentQ4

Abstract

To evaluate the effect of nitrogen and water withholding in vegetative growth stage of corn on efficacy of nicosulfuron and 2,4-D+ MCPA an experiment was conducted as a factorial arrangement in a randomized complete block design with three replications at Tarbiat Modares University in 2017. The first factor contained four treatments including application of nicosulfuron, 2,4-D+ MCPA, weed free and weed infested as control. The second factor consisted of normal irrigation and water withholding from 4 to 8 leaf stage. Third factor contained either urea application or no fertilizer application. Normal irrigation and nitrogen fertilizer application significantly increased nicosulfuron and 2,4-D+ MCPA efficacy in weed control and total weed dry weight decreased to 341 and 361 g.m-2 respectively compared 1370 g.m-2 as weed infested. Nicosulfuron and 2,4-D+ MCPA reduced weed total dry weight significantly under irrigation withholding. Grain yield increased with application of nitrogen and nicosulfuron. Grain yield was higher with application of 2,4-D+ MCPA than nicosulfuron without nitrogen application under irrigation withholding. Application of nicosulfuron with nitrogen application provided satisfactory weed control and increased grain yield.

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