Grassweed control – Cost to pay if don’t delay?

Written by cpm from CPM Magazine

Download PDF Delayed drilling is the backbone of grassweed control programmes, with mid-October the ideal in blackgrass situations. But with drills moving from mid-September, where does that leave grassweed control. CPM finds out. When it comes to drilling, low disturbance is key. By Lucy de la Pasture The hum of combines was an intermittent sound during a mainly dull and dank August which delayed harvest progress for many. But a kinder September means a significant area of early wheat drilling has taken place in reaction to the impossible conditions experienced in autumn 2019 and again in 2020, believes Hutchinsons’ regional technical manager Cam Murray. So how is this scenario likely to impact weed emergence, competitiveness and the application of both cultural and chemical control measures? “The consequence of two extremely wet establishment periods means that many were forced to abandon winter crop plantings and revert to spring options, the majority of which were sown in March or early April. This resulted in a significant reduction in grassweed seed return,” says Cam. “Even where blackgrass is present, the very fact that it was restricted to spring establishment will have reduced seed return by a factor of 10 compared with autumn-established situations.”…
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