Plum Curculio

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Plum Curculio

Description: Adult beetle, black or brownish black, is about

1/4″ long, very hard, and has a beak 1/4 as long as

its body. They prefer apples and stone fruits (peach,

plum, etc.). Adults overwinter in the trash beneath

trees, in fence rows, or in wooded areas. In spring

they begin appearing at late bloom. Larvae bore to the

center of the fruit immediately and feed near the core.

After completing growth, the larva bores to the outside

and drops to the ground. Through most of the season,

eggs are laid under the skin of fruits, so little can

be done to prevent fruit damage. Larval injury is extensive

and usually causes fruit to fall before larva completes

growth. Curculio is active only above 55° F.

Solution: Pick up

and haul away damaged fruit to prevent larvae from getting

into soil to complete life cycle. Grub Away Nematodes can be sprayed

wherever apples drop, to reduce next year’s curculio

population. Curculio larvae drop from apples to pupate

in soil, where nematodes can effectively reduce the

population of overwintering adults. Surround At Home

has an exciting promise as an excellent suppression

tool. Begin using Surround At Home at petal fall, and

repeat after rains or every 2 weeks to cover new growth.

 


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