Rutgers Cooperative Extension
Seasonal updates on diseases, insects, weeds impacting tree fruit and small fruit (blueberry, cranberry, and wine grape). Fruit Pest Alerts are also available via this category feed.
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From Mark Chien’s Wine Grape Information for Pennsylvania and the Region May 4, 2013
http://pawinegrape.com/
Full Newsletter
One topic Mark covers in this issue:
Early Season Grape IPMThe season has gotten off to a slow start due to cool weather across the region but once it warms up you can expect the shoots to grow very quickly.
Blueberry Bloom.
Photo by P. Oudemans
Blueberry bloom is progressing nicely and bee activity seems reasonably good. Our biggest enemies are wind and cold. Botrytis does not seem to be developing in blueberry fields and should not pose any risk in the next 7-days. Anthracnose is our biggest disease concern at this point. Hopefully all conventional growers will have made one application of Ziram and will be looking at an application of Abound next week.
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We were just notified on late Wednesday afternoon that the Gowan 24C label was approved for use in NJ blueberries. This label is for the Gowan Malathion 8 Flowable, and gives us a maximum of 2 applications at 2.5 pt (lb ai) per acre, with a 1 day PHI. See label NJ Malathion 8 Flowable
We are still waiting on the Cheminova and Loveland labels.
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In southern counties we have accumulated approximately 102 DD base 45 since the biofix set on 4/16. Based on the current forecast, insecticides for OFM control should be applied in 7-10 days. In northern counties, only 14 DD have accumulated since the biofix set on 4/22 so no applications for OFM will be needed for about 2 weeks.
