Figure 4. Brush weeder in operation in a vineyard in Yamhill, OR 2019 (left). The brush was spinning at 1,500 rpm, cut plants at the soil level, and uprooted smaller seedlings. The abrasive action can remove bark (right), generate dust, and entangle with wire installed too closely to the ground.
We also compiled information on the speed of operation to help estimate operational capacity and costs. This data should be available online soon.
Western Sustainable Agriculture funded this work (award no. OW18-019). I would also like to acknowledge the Erath Foundation for supporting this project and the local growers who participated.
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