Cotton aphids active in Georgia

Aphids are showing up in cotton now in Georgia. Based on past experience in Thomas County, this is earlier than normal. Jodie

sent me this picture of aphids that were parasitized by wasps. The aphids turn a reddish color, then more white color. Sometimes you can see a hole on the backside where the larvae exit.

Here is some 5 - 6 leaf cotton that had ants crawling up the stalk. When we looked under the leaves, aphids are present. The reason these ants are crawling around the aphids, is that they are 'farming' the aphids. The aphids produce honeydew as they feed on the plant. The ants are after this sweet taste.

Ants 'farming' aphids

UGA Extension Entomologist Dr. Phillip Roberts says right now, we do need to be looking for aphids in fields. But one of the most important things we can do is watch for the naturally occurring epizootic fungus that cause aphid populations to crash. We generally see the aphids crash sometime between the last 2 weeks of June and first 2 weeks of July.

Before the crash, we may see some very small hits of aphids in 'hot spots'.

In these places, we may see honeydew (sticky, shiny material), yellowing in the terminal.

We look for gray, fuzzy aphid cadavers. As aphids build, the

fungus multiplies, and aphids crash. The crash happens fast and kills all aphids within a week or so. Here is a picture of the fungus on an aphid.

Aphid Fungus

Dr. Roberts has completed lots of research on cotton aphids and has not seen a consistent yield response from controlling them. Controlling aphids remains a judgment call. A few points to consider if making this decision on spraying for aphids is:

  1. If terminal has turned yellow.
  2. If the whole field has aphids (instead of just hot spot.)

Latest News

The Scoop Podcast: Overcome Barriers, Instill Confidence, and Improve Performance

Tim McArdle is working as the ResponsibleAg Industry Ambassador. He highlights how ResponsbileAg is an industry program for the industry that “lights the way for you to be in compliance.”

Southern States: Rebuilding for The Next 100 Years

This year marks the cooperative’s 100th year in business. And as Steve Becraft describes, there’s more to celebrate than the centennial milestone.

The Carbon Games: Agricultural Producers Still Looking for the Leaderboard

“What we need to do to move carbon past the starting line is to show farmers the scoreboard and tell them exactly what they need to do to earn their points,” said Mitchell Hora.  

Senators Reintroduce the Next Generation Fuels Act

Emily Skor, Growth Energy CEO, says the fuel industry has only “scratched the surface” of ethanol potential. She feels this act will help unleash ethanol’s capabilities.

Farming The Northern Plains: Wheat Is A Winner, Corn Is A Headache

“The planting priorities are number one,” says Dr. Lee Briese of Central Ag Consulting. Jamestown, ND

The Equity and WebAir Launch Drone Spray Company

Green Creek Drone Company will be led by Tony Weber as general manager and will also be working closely with The Equity’s Agronomy Department providing custom application of fungicides in select areas in 2023.