Events Calendar

April  2014
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Two Upcoming Peanut Field Days

Two upcoming peanut field days offer the latest research recommendations and a chance to see some research/demonstration plots. The first field day will be held in south Mississippi, at Lucedale, the other in north Mississippi, at Clarksdale.

Lucedale

The Lucedale field day will be held on Thursday, August 29. Registration starts at 8:30 am at the George County . . . → Read More: Two Upcoming Peanut Field Days

Early Leaf Spot of Peanut found in the Greater Columbus Area

This last week I found early leaf spot in the Greater Columbus, Mississippi area. For information and images on how to identify early leaf spot, please see: http://www.mississippi-crops.com/2013/08/12/early-leaf-spot-of-peanut/ and http://www.mississippi-crops.com/2012/09/05/early-leaf-spot-found-in-the-greater-aberdeen-area/

Early and late leaf spot are major defoliators of peanuts and can be responsible for significant yield losses. In fact, these two diseases are the . . . → Read More: Early Leaf Spot of Peanut found in the Greater Columbus Area

Early Leaf Spot of Peanut

Synopsis:

Is caused by a fungus, Cercospora arachidicola.
Defoliates infected leaflets fairly quickly.
Is one of the reasons, along with late leaf spot, for the development of the traditional two week spray schedule in established peanut growing areas (see Figure 1).
Lesion appearance:

Usually infects upper side of leaf.
Often surrounded by a chlorotic ring with a dark chocolate brown center.
Conidiophores are . . . → Read More: Early Leaf Spot of Peanut