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plant survival

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Catalogue: GRDC Updates (West)
After 12 years of continuous glyphosate application, herbicide resistance testing carried out on four populations of annual ryegrass showed confirmed resistance to glyphosate... Plant survival of annual ryegrass collected in 2011 from plots selected with annual application of glyphosate at 270 g ai/ha or 1080 g ai/ha at 3-leaf stage of ryegrass plants, following application of different rates of glyphosate (e.g., Roundup PowerMAX ) under glasshouse conditions at Northam in 2012... The overall survival of annual ryegrass when treated with a dose greater than 540 g ai/ha was higher in plants collected from plots selected with 270 g ai/ha glyphosate at 3-leaf stage than plots selected with 1080 g ai/ha...
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Catalogue: GRDC Updates (West)
Mention of a trade name or company in this publication does not imply endorsement of any product or company by the Department of Agriculture and Food, Western Australia... Overall, yields were generally greater for those plots with effective control of weeds and lower weed biomass at anthesis (Tables 1 and 2)... In summary, metribuzin shows some promise for use pre-emergent in lupins but is not currently registered at this timing...
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