Crop & Pest Report

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Cleaver/Catchweed Bedstraw Control (5/11/17)

Several reports show cleavers becoming more prevalent across northern North Dakota. Cleavers as known in Canada or Catchweed bedstraw (Galium aparine) as known in North Dakota is an annual and a winter annual resuming growth early in the spring.

Cleaver/Catchweed Bedstraw Control

Several reports show cleavers becoming more prevalent across northern North Dakota. Cleavers as known in Canada or Catchweed bedstraw (Galium aparine) as known in North Dakota is an annual and a winter annual resuming growth early in the spring. It has a square ‘sticky’ stem that can cause crop lodging and harvest problems. Cleaver seed in similar in size and shape as canola seed making it difficult to separate. Cleavers is major weed in the prairie provinces of Canada and now moving into northern North Dakota.

Cleavers is tolerant to many herbicides used in small grain and row crops. Some herbicides with varying level of activity are: quinclorac, dicamba, Harmony Extra (generics), Pursuit, and Basagran.

zollinger cleaver

Rich Zollinger

Extension Weed Specialist

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