Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/52259
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Type: Journal article
Title: Weed management impacts on the population dynamics of barnyardgrass (Echinochloa crus-galli) in glyphosate-resistant cotton in Australia
Author: Werth, J.
Preston, C.
Roberts, G.
Taylor, I.
Citation: Weed Technology, 2008; 22(1):190-194
Publisher: Weed Sci Soc Amer
Issue Date: 2008
ISSN: 0890-037X
1550-2740
Statement of
Responsibility: 
Jeff A. Werth, Christopher Preston, Grant N. Roberts, and Ian N. Taylor
Abstract: An experiment was conducted to determine the population dynamics of barnyardgrass under a range of weed management treatments in glyphosate-resistant (GR) cotton in Australia. These treatments consisted of glyphosate herbicide only (Glyphosate only), glyphosate herbicide plus a combination of conventional or integrated weed management practices (Glyphosate + IWM), glyphosate herbicide plus a reduced residual herbicide program (Glyphosate + Res.), glyphosate herbicide plus a grass herbicide (Glyphosate + Grass), and a combination of conventional weed management practices (IWM only). The experiment investigated the effects of weed management on the weed seed bank, weed emergence patterns, and weed populations. After three years, all treatments resulted in commercially acceptable control of barnyardgrass. However, treatments containing soil-applied residual herbicides proved more effective over the period of the experiment. Seed bank reductions were in the order of 100-fold over the period of the experiment for treatments that received residual herbicides compared to 10- to 20-fold reductions for treatments that did not. The experiment highlighted the importance of early-season weed control, as well as the importance of an integrated approach to weed management with residual herbicides to control later-emerging weeds in GR cotton.
RMID: 0020080423
DOI: 10.1614/WT-07-127.1
Appears in Collections:Agriculture, Food and Wine publications

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