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Fruit & Vegetable Weekly Crop Update

Timely vegetable crop info for local producers.

weekly update 7-27-2012

Posted by Kyle Cecil -

  1. 4 inch soil temperature 80.7 degrees
  2. Growing Degree Days since April 1: 2292.5 GDD Average** = 1682.0 GDD
  3. If at all possible, apply insecticides late in the evening or early in the morning. Try to avoid spraying insecticides or miticides in the heat of the day. There are some insecticides that are more effective when temperatures are hotter (such as the Bt insecticides) and others that become less effective as temperatures go up (such as pyrethroids). On a more general note, two of the factors that are important in the breakdown on insecticides are heat and sunlight. We have had an abundance of both, so it's possible that our insecticides are not lasting quite as long as they might normally. (Source Purdue University).
  4. Cucumber beetles are chewing insects and may attack cucumber, bean, melon, squash and pumpkin. Later in the season, the adults feed on leaves, blossoms, and fruits. As they feed on crops, cucumber beetles may spread bacterial wilt and mosaic, two serious diseases of vine crops. Either the disease or the feeding may cause serious damage or complete crop loss.
  5. Extremes in temperature and soil moisture often bring on blossom-end rot, a dry, leathery scarring of the blossom end of the fruit on crops, such as tomatoes, peppers and squash. Irrigating during dry periods and mulching to conserve soil moisture will help minimize this problem. We have seen a lot of this during the growing season.

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