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Consider factors hindering the effectiveness of glyphosate

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Sprayer setup and using good quality water are critical to ensure full rates of glyphosate are getting to the weeds... Dr Boutsalis says a common reason for poor weed control when using glyphosate is herbicide resistance, ranging from weak resistance to strong resistance... Plants with weak resistance are often controlled with maximum label rates of glyphosate, Dr Boutsalis says, but relying on a herbicide-only option will develop resistance to very high rates...