Fall-planted cover crops are frequently a component of integrated weed control programs in herbicide-resistant soybeans. But does it matter which cover crop is used?

Researchers writing in the journal Weed Technology say if you are battling Palmer amaranth and other Amaranthus spp. weeds, your cover crop choice does matter.

During a two-year, multistate study, they found that not all cover crops performed equally. Cereal rye was more successful than spring oat, forage radish and annual ryegrass in reducing the density of Amaranthus spp. weeds within the first month or so following soybean planting.

Researchers say that makes cereal rye the preferred choice when the density of Amaranthus spp. weeds in a soybean field is high or when environmental conditions reduce the effectiveness of your herbicide program.

Want to know more? You can read the article “Influence of Cover Crops on Management of Amaranthus spp. in Glyphosate- and Glufosinate-Resistant Soybean” in the recently published Vol. 31, Issue 4 of Weed Technology.

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