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Smart Sowing for Natural Weed Control

weedy-wheatNew research results from the University of Copenhagen’s Department of Plant and Environmental Sciences report that weeds would have a tough time competing against crops such as corn, grains and beans if farmers were to alter their sowing patterns.

“Our results demonstrate that weed control in fields is aided by abandoning traditional seed sowing techniques. Farmers around the world generally sow their crops in rows. Our studies with wheat and corn show that tighter sowing in grid patterns suppresses weed growth. This provides increased crop yields in fields prone to heavy amounts of weeds,” said Professor Jacob Weiner, a University of Copenhagen plant ecologist.

Research studies performed in Danish wheat fields, together with recent studies in Colombian cornfields, demonstrate that modified sowing patterns and the nearer spacing of crops results in a reduction of total weed biomass. The amount of weeds was heavily reduced — by up to 72 percent — while grain yields increased by more than 45 percent in heavily weed-infested fields. The trick is to increase crop-weed competition and utilize the crop’s head start, so that it gains a large competitive advantage over the neighboring weeds. The research results from Colombia have been published in Weed Research. This encapsulation of the research is from the March 2015 issue of Acres U.S.A.

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