Fruit Crop Insect Scouting

David Owens, Extension Entomologist, owensd@udel.edu

 

Grapes

June beetles were observed feeding on grapes in small plots at the Carvel REC earlier this week. Inspect ripe and ripening fruit visually for signs of adult activity. Carbaryl is the most effective material but has a 7-day pre harvest interval and may leave visible residues. There is a good extension webpage on them here: https://grapes.extension.org/green-june-beetle-damage-to-grapes/#:~:text=Green%20June%20beetles%20are%20attracted,years%20but%20significant%20in%20others.

 

Blueberry

Blueberry bushes with suspected stunt disease were observed in southern Delaware. This is a phytoplasma disease vectored by sharp nosed leafhoppers. An excellent fact sheet from Rutgers can be found here: https://pemaruccicenter.rutgers.edu/entomology/iSharp-nosed-Leafhopper.html#:~:text=Sharp%2Dnosed%20leafhoppers%20feed%20and,pointed%20head%20(Figure%201). We are approaching the mid-August expected flight period.

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