Full TGIF Record # 19285
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Web URL(s):http://onlinelibrary.wiley.com/doi/10.1111/j.1365-3180.1990.tb01720.x/epdf
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Publication Type:
i
Refereed
Author(s):Andrews, M.
Author Affiliation:Department of Plant Science, Lincoln University, Canterbury, New Zealand
Title:Diclofop-methyl antagonism by broadleaf weed herbicides: The importance of leaf expansion rate
Source:Weed Research. Vol. 30, No. 5, October 1990, p. 331-340.
Publishing Information:Oxford: Blackwell Scientific Publications
Keywords:TIC Keywords: Avena sativa; Avena fatua; Diclofop methyl; Combination treatments; Interactions
Abstract/Contents:"Avena sativa cv. Amuri and A. fatua were sprayed with diclofop methyl (1.0 kg a.i. ha-1) alone and in combination with 2,4-D (1.1 kg a.i. ha-1), bentazone (1.0 kg a.i. ha-1), chlorsulfuron (15 g a.i. ha-1) or dicamba (0.3 kg a.i. ha-1). Effects of the herbicides on leaf extension rate during the first 8 to 10 days after spraying and subsequent growth (dry weight) after 57-75 days were determined by comparison with unsprayed plants. Diclofop-methyl applied alone did not cause a decrease in leaf extension rate of A. sativa or A. fatua until at least 4 days after spraying. All broadleaf weed herbicides in combination with diclofop-methyl caused a decrease in leaf extension rate of both species within 2 days of spraying. Ten days after spraying, leaf extension rates for plants sprayed with a broadleaf weed herbicide plus diclofop-methyl (all combinations) were lower than for unsprayed plants but greater than for plants sprayed with diclofop-methyl alone. With the exception of A. fatua sprayed with bentazone, long-term growth of plants sprayed wth a broadleaf weed herbicide plus diclofop-methyl (all combinations) was lower than for unsprayed plants but greater than for plants sprayed with diclofop-methyl alone. Bentazone applied with diclofop-methyl caused a substantial decrease in leaf extension rate of A. fatua within 24 h of spraying but at harvest, dry weight of plants from this treatment was similar to or less than that for plants sprayed with diclofop-methyl alone. Application of diclofop-methyl with bentazone at a rate of 0.3 kg a.i. ha-1 also caused a reduction in leaf extension rate of A. fatua within one day of spraying. At this rate of bentazone, dry weight of plants at harvest was intermediate to that of unsprayed plants and those sprayed with diclofop-methyl alone. It is proposed that decreased leaf expansion rate during the first few days afte[r] spraying is the cause of broadleaf weed herbicide antagonism of diclofop-methyl."
Language:English
German
French
References:51
Note:Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Andrews, M. 1990. Diclofop-methyl antagonism by broadleaf weed herbicides: The importance of leaf expansion rate. Weed Res. 30(5):p. 331-340.
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Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1111/j.1365-3180.1990.tb01720.x/epdf
    Last checked: 10/13/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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