Groundcherry, black nightshade, and hairy nightshade berries severely reduce bean quality during harvesting because they do not dry in windrows. During threshing, berry juices stain the beans; the sticky juices on the beans collect dirt and debris during harvest and warehouse handling that cannot be cleaned off. The sticky seeds of these weeds may also slow or clog the thresher. In storage, moisture from berries can lower quality. Berries left in the field will infest the soil for the following year. If present, pull and carry these weeds out of the field before harvesting.Survey immediately before harvest to determine the spectrum of weeds present for next year's planning records. Records from previous crops will indicate which weeds escaped control, thus possibly infesting future crops.
How to survey
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