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.