A website from UGA Cooperative Extension

News, events, and happenings in Colquitt County agriculture.

Weed Resistance

  • Below are a few words from Dr. Eric Prostko, UGA Weed Sciencist, on the subjects of ryegrass control and the peanut rotation change to the Reviton herbicide label. A few things you might be interested in: 1) Lately, I have received a few questions about controlling Italian/annual ryegrass in preplant burndown situations.  Assuming resistance is…

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  • Cotton: The cotton crop ranges from the 5th week of bloom to defoliated. I have seen a lot of potash and other fertility issues in fields as the crop reaches its end. Growers need to pay attention to these spots and evaluate causes by looking at soil or nematode samples. According to Dr. Camp Hand, UGA…

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  • Another exciting week in Colquitt County agriculture. The 2023 Sunbelt Ag Expo Field Day is scheduled for July 20, and farmers are invited to join us to learn practical information from the region’s top agricultural scientists about the newest technologies that farmers can use to improve their operations. The Sunbelt team looks forward to welcoming…

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  • Growers are trying to finish planting their cotton and peanut crops. The corn crop ranges from V10 to early pollination, and the peanut crop ranges from just planted to about 40 days old. The weather has not been optimal for herbicide applications to cotton and peanuts. Drier weather is in the immediate forecast. The cooler…

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  • In this issue: Insect and disease situation in cotton and peanuts, post emerge herbicide applications in cotton and peanut, Southern rust situation in corn, Ascochyta (wet weather blight), TSWV, sore shin, and information from Dr. Eric Prostko. He educates growers about soil-applied glyphosate and peanuts.  The weather has not cooperated with wheat producers this past week as…

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  • Below are a few observations from Dr. Eric Prostko’s corn research plots this week. Dr. Prostko is the Extension Weed Specialist with corn responsibilities. 2) Question #1: Why do I have Prowl H20 3.8SC (pendimethalin) mixed with everything in these treatments? Texas panicum/buffalograss/bullgrass is one of the most common annual grass weeds in Georgia field…

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  • Cutleaf eveningprimrose and wild radish have traditionally been troublesome weeds to manage in reduced-till fields. The most effective and economical option for controlling primrose and radish is an application of 2,4-D alone or mixed with any Roundup mixture (such as Roundup + Valor) at least 30 days before planting. For primrose, 2,4-D at 12 oz/A…

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  • Another interesting week in Colquitt County agriculture. Lets go over some of the questions that I have been be getting the last couple of days. What are the soil temperatures? Cooler weather has been the topic this week. The illustration below shows how the 2, 4, and 8-inch soil temperatures have fluctuated from 6:00 p.m.…

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  • Using Pesticides Wisely – Georgia 2023.1. As mandated by federal labels, one must hold a private or commercial pesticide applicator license topurchase and use the restricted use herbicides Engenia, XtendiMax, and Tavium. Use is limited to ONLYthose persons holding a private or commercial applicator certification. It is no longer permissible for noncertified applicators to apply…

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  •  As Dr. Culpepper and I have begun our annual winter weed tour around most of Georgia, one of the many things you will here us discuss is starting weed-free (clean) at planting using a combination of practices such as tillage, cover crops, and/or herbicides.  The use of cover crops and tillage will vary by grower. …

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