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Influence of selected environmental factors on glyphosate efficacy when applied to awnless barnyard grass (Echinochloa colona (L.) Link)

Citation

Tanpipat, S and Adkins, SW and Swarbrick, JT and Boersma, M, Influence of selected environmental factors on glyphosate efficacy when applied to awnless barnyard grass (Echinochloa colona (L.) Link), Australian Journal of Agricultural Research, 48, (5) pp. 695-702. ISSN 0004-9409 (1997) [Refereed Article]

Copyright Statement

Copyright 1997 CSIRO

DOI: doi:10.1071/A96141

Abstract

Glasshouse experiments were conducted to determine the effects of various environmental factors on glyphosate efficacy when applied to Echinochloa colona (L.) Link (awnless barnyard grass) plants. The variables examined were 4 soil moisture conditions (29, 42, 55, and 100% of field capacity), 2 levels of irradiance (400 and 800 μmol/m2 s), 3 temperature regimes (20/15, 30/25, and 35/30C; day/night), and 2 levels of relative humidity (92 and 65%). The efficacy of 360 g acid equivalent glyphosate/ha was greatest when applied to well-watered (field capacity) plants that were placed under cool (20/25C) and humid (92% relative humidity) conditions. The efficacy was least when applied to plants under severe water stress (29% of field capacity) that were placed under hot (35/30C) and less humid (65% relative humidity) conditions. In all experiments, efficacy was not altered by the level of irradiance.

Item Details

Item Type:Refereed Article
Keywords:herbicide tolerance, glyphosate, environment, weed control
Research Division:Agricultural and Veterinary Sciences
Research Group:Crop and Pasture Production
Research Field:Crop and Pasture Protection (Pests, Diseases and Weeds)
Objective Division:Plant Production and Plant Primary Products
Objective Group:Summer Grains and Oilseeds
Objective Field:Summer Grains and Oilseeds not elsewhere classified
Author:Boersma, M (Dr Mark Boersma)
ID Code:90613
Year Published:1997
Web of Science® Times Cited:17
Deposited By:TIA - Research Institute
Deposited On:2014-04-14
Last Modified:2014-05-06
Downloads:0

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