WEST VIRGINIA APPLE CROP PROFILE

Redbanded leafroller larva (yellow) and fruit injuryRedbanded leafroller, Argyrotaenia velutinana Walker: Redbanded leafroller was once the most important leafroller in the eastern U.S., reaching its greatest severity in the mid-Atlantic states. It is generally controlled effectively by growers using conventional organophosphate-based spray programs, but occasional outbreaks still occur.

Chemical control: Insecticides are typically applied for the control of redbanded leafroller at petal fall (first generation), latter part of June to early July (second generation) and August (third generation).

   

Amount used

Insecticide

% of acres treated

lb a.i./acre/application

lb a.i./acre/year

Azinphos-methyl

80

0.44 - 0.75

0.44 - 2.82

Methomyl

66

0.34 - 0.45

0.34 - 1.80

Methyl parathion

60

0.38 - 0.75

0.38 - 3.0

Phosmet

9

1.1 - 1.4

1.1 - 1.4

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