Bean pod mottle virus , also prevalent this season, has different effects on plant maturity compared with fungal diseases. Delayed maturity is common in virus-infected plants, and they may have green stems when pods are mature. Physical stress such as dry stress in the late season also can result in premature defoliation in portions of a field. Areas of defoliation are on high ground or on the hillside of a field. Dry stress-related premature defoliation is common in fields with sandy soil.
Plants often have perfect root systems and no disease lesions on stems.
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