Bean Pod Mottle Virus - Scouting

Leaf mottling is a typical symptom of BPMV infection, although it is not always present. Photo credit: Palle Pedersen, Iowa State University

Scouting for signs of virus infection

Check for leaf symptoms on young leaves, which show symptoms more readily than older leaves. Scout for plant symptoms of virus during periods of rapid growth and cool temperatures. Symptoms will be most apparant under these conditions than during dry, hot weather.

At soybean maturity, check for seed mottling and for signs of delayed maturity (green stem).

Scouting for bean leaf beetles

Scout for the first-generation peak in late V or early R growth stage - around early July.

Scout for the second-generation peak during pod-fill stage in August. Read more on scouting for bean leaf beetles»

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