More care and less speed in stubble glyphosate spraying are critical to making the most of its increasingly vital role in arable grass-weed control this autumn, insist leading crop management experts.
Roundup technical specialist, Barry Hunt says: “With time at such a premium and effective control of black-grass and other troublesome weeds ahead of drilling so crucial, less-than-ideal pre-planting glyphosate treatment is something you can’t afford these days.
“Apart from wasting time and money and putting extra pressure on hard-pressed pre-and post-em chemistry, an incomplete kill is the fastest route to resistance development.”
Agrii spraying specialist, David Felce warns growers that they only have one or two opportunities to tackle black-grass ahead of drilling.
“If you’ve got bad black-grass these can be your most important sprays of the season, so it makes sense to take the time and effort to get your glyphosate application spot on.”
Correct glyphosate targeting is as important as timing according to Mr Felce, who urges operators to spray at the right speed, height and pressure using the most appropriate nozzles as well as the correct rates and water volumes.
Source: Adapted from Monsanto technical information