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Bean
Leaf Beetle - Damage to
Beans
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Click for
image of feeding
by
Iowa State University
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Larval damage occurs exclusively in the
soil where they feed on roots and nodules of beans. The larvae feed
for about 30 days before pupating. In high population years, reduced
stands and yields could be expected but generally the feeding damage
by the larvae is considered minimal. After emerging from the pupal
stage, the adult beetle attacks the foliage of young plants, chewing
small round holes in the leaves. As the plant matures, the beetles
will feed on the bean pods but only feeding on the outer layers
of the pod. This feeding results in rough lesions. The seeds within
the pods are seldom eaten. Reduced quality from feeding on the pods
can result but overall damage by the bean beetle is generally not
an economic problem. |
Click
for
image of damage
by
N-IAN
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Click for
image of damage
by
Ohio State University
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Click for
image of damage
by
MU Extension
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How to manage bean leaf beetle
Return to bean leaf beetle life cycle
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©All material is protected
by Section 107 of the 1976 copyright law.
Copyright is held by Cornell University.
Maintained by Jason D. Plate.
Last updated Mar. 1st, 2007.
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