{"id":178,"date":"2015-07-09T14:58:02","date_gmt":"2015-07-09T18:58:02","guid":{"rendered":"http:\/\/site.extension.uga.edu\/bullochag\/?p=178"},"modified":"2015-07-09T16:44:10","modified_gmt":"2015-07-09T20:44:10","slug":"cotton-aphids-aphids-and-more-aphids","status":"publish","type":"post","link":"https:\/\/site.extension.uga.edu\/bullochag\/2015\/07\/cotton-aphids-aphids-and-more-aphids\/","title":{"rendered":"Cotton Aphids, Aphids and more Aphids"},"content":{"rendered":"

Cotton aphid numbers have been increasing over the last couple of weeks. Aphids generally build to moderate\/ high numbers and eventually crash due to a naturally occurring fungus. This fungal epizootic typically occurs in our area in early\/mid-July. Once the aphid fungus is detected in a field we would expect the aphid population to crash within a week or so (notice gray fungus in picture below).<\/p>\n

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\"Aphids\"<\/a><\/p>\n

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I asked Dr. Philip Roberts about the aphid fungus being present in southwest Georgia. He stated, \u201cThe fungus is just now starting and has been observed in\u00a0some fields this week.\u201d\u00a0 Hopefully, it will make it to our side of the state within the next week. However, it is a judgment call whether to spray for aphids in cotton. I have observed some severe cases of aphids in cotton fields and they are beginning to effect the new growth through the loss of moisture and nutrients. This stress factor can be reduced with the use of an aphid insecticide. However, research conducted by Dr. Roberts in Georgia (graph below) fails to consistently demonstrate a positive yield response to controlling aphids. If you decide to spray for aphids in your cotton, please be cognizant of beneficial insects in your insecticide selection and their importance as we move through the growing season.<\/p>\n

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\"Impact<\/a><\/p>\n

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\"Impact<\/a>\u00a0<\/a><\/p>\n

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