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herbicide failure

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Catalogue: Ground Cover
Brome grass needs multi-pronged attack.. When herbicides are put under pressure resistant weeds are quickly selected for, such as this population of brome grass... Break crops need to be employed with other management tools including: high seeding rates at sowing for improved competition with brome grass plants; effective herbicide choice with correct rates, droplet size and timing; regular resistance testing if herbicide failure is suspected; retaining or sourcing clean seed for future use; and monitoring brome grass levels in all paddocks while planning future use...
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Catalogue: Broadacre Field Crops DAFF QLD
What to do if glyphosate resistance is suspected... A healthy weed plant displaying glyphosate resistance.. Testing is also recommended if the other common causes of herbicide failure are not likely, such as: the glyphosate was applied in conditions and at a rate that should kill the target weed the suspect plants avoided herbicide contact or emerge after the spraying the pattern of surviving plants suggests a spray miss or other application problem..
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Catalogue: Broadacre Field Crops DAFF QLD
What to do if glyphosate resistance is suspected... A healthy weed plant displaying glyphosate resistance.. Testing is also recommended if the other common causes of herbicide failure are not likely, such as: the glyphosate was applied in conditions and at a rate that should kill the target weed the suspect plants avoided herbicide contact or emerge after the spraying the pattern of surviving plants suggests a spray miss or other application problem..
Related categories:
Catalogue: Broadacre Field Crops DAFF QLD
What to do if glyphosate resistance is suspected... A healthy weed plant displaying glyphosate resistance.. Testing is also recommended if the other common causes of herbicide failure are not likely, such as: the glyphosate was applied in conditions and at a rate that should kill the target weed the suspect plants avoided herbicide contact or emerge after the spraying the pattern of surviving plants suggests a spray miss or other application problem..
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Catalogue: GRDC Publications
A positive test result confirms the need for alternative tactics or herbicides... Assessing weed population density The most accurate way to estimate the population of a weed in a paddock is to count the number of plants in an area of known size at a number of locations... Estimating potential weed population density Potential weed population density can be estimated in a number of ways, such as: When weeds are setting seed, count the number of seed-heads or pods, and the number of seeds per pod or seed-head, from a given sample area...
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