Bug Scout 1980
Reduce Overwintering Pests
(Tom Turpin, Entomologist, Purdue University)
It could be cused by apple maggot or plum curculio or even gravity!
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September 20, 1980

Some pests survive unfavorable environmental periods in crop residue.  For instance, the apple maggot and plum curculio cause infested fruit to drop from trees.  The dropped fruit then serves as an overwintering site for these insect pests.  Removing and destroying fruit is a good way to reduce populations of these pests.

The anthracnose fungus and the European cornborer both overwinter in cornstalks.  Fall plowing reduces winter survival of these pests.  Reduced tillage tends to increase infestations of pests that remain in crop stubble.

When it comes to managing pests, a good "house cleaning" can work wonders.
  

by Tom Turpin, Entomologist, Purdue University

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