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Fruit & Vegetable Weekly Crop Update

Timely vegetable crop info for local producers.

weekly fruit and vegetable crop update 4-30-2013

Posted by Kyle Cecil -

1. 10 am soil temp 4 inch level: 56.1 F

2. Growing Degree Days (GDD): 78.0 GDD Average** = 53.0 GDD.

3. Insect Management in Apples and Peaches.  Key insects of concern for apple and peach growers during the few weeks after bloom include stink bugs and plant bugs, plum curculio, oriental fruit moth, codling moth, and San Jose scale.  See http://www.extension.iastate.edu/Publications/PM1282.pdf for more information.  ( Dr. Rick Weinzierl, U of I)
4. As asparagus emerges and harvests spread northward through the state, be sure to scout for asparagus beetle and its eggs (see photo); the threshold during harvest is 5-10% plants infested or 2% of spears with eggs. For complete control options, see the Midwest Vegetable Production Guide for Commercial Growers. ( Dr. Rick Weinzierl, U of I)

5. High tunnel growers. Nighttime low temperatures within a structure covered with two layers of plastic (with an insulating layer of air in between) generally average about 7º F to 8º F warmer than outside temperatures. Structures covered with just a single layer of plastic often realize only a 3º F increase in nighttime lows.

Kyle

Illinois Fruit and Vegetable Newsletter http://ipm.illinois.edu/ifvn/



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