Talkin' Cotton Podcast – Détails, épisodes et analyse

In this special episode, Dr. Stanley Culpepper breaks down the proposed regulatory changes with respect to dicamba that every cotton grower needs to understand before the September 6th comment deadline.

Dr. Culpepper first highlights Georgia's exceptional track record in pesticide stewardship, with over 19,000 training participants and multiple EPA visits to understand how Georgia farmers have successfully minimized off-target movement. This context matters because the proposed changes don't acknowledge regional differences in application success rates.

While some existing requirements remain unchanged – including restricted use status, mandatory training, and application parameters – the new temperature-based volatility mitigation requirements represent a potentially devastating change for southern cotton producers. Under the proposed rules, applications would face escalating restrictions based on 48-hour temperature forecasts.

The real-world impact is sobering. Data analysis shows these temperature restrictions would eliminate approximately 37% of potential spray days if cotton is planted in May, force costly sequential applications on most remaining days, and effectively eliminate any opportunity to apply dicamba without significant additional costs. For farmers planting in June, available spray windows might shrink to just 13 days – utterly inadequate for managing large acreages.

What makes this particularly frustrating is that Georgia has not documented dicamba volatility issues since implementing VRAs. This underscores the critical importance of farmer feedback through the comment period ending September 6th.

Work with your county extension agent to submit effective comments that can influence these proposed regulations. The future of this critical weed management tool depends on making your voice heard now.

The Georgia cotton crop is showing signs of change as August progresses, with growers witnessing fruit shed across fields statewide. This episode dives deep into the natural processes driving cotton fruit abscission and whether you should be concerned about those squares and young bolls on the ground.

Our experts explain that even high-yielding cotton naturally sheds up to 60% of its fruit, with this process peaking between peak bloom and cutout when demand for carbohydrates is highest. Recent overcast weather has intensified this natural process, limiting the crucial solar radiation plants need. While concerning to witness, the team reassures growers that position and timing play key roles – fruit retention typically peaks around node 10, and once bolls reach two weeks of age, they're unlikely to shed regardless of conditions. Unfortunately, when sunlight becomes the limiting factor, management options are virtually non-existent.

As cotton approaches cutout, irrigation termination decisions become critical. Research shows continuing irrigation beyond cutout can waste $20-80 per acre with no yield benefit. The team provides guidance on knowing when to "pull the meter" and walk away, especially valuable during a year with tight margins and 67-68 cent cotton. 

The conversation shifts to pest challenges, including bollrot (increasing with recent wet weather), stink bugs (Georgia's primary cotton pest), and the newly confirmed cotton jassid now present in over 40 Georgia counties. This tiny pest causes distinctive "hopper burn" that can be mistaken for nutritional deficiencies, particularly along field edges and equipment tracks.

With some early-planted cotton approaching defoliation as soon as late August, the team offers timely insights for navigating these late-season decisions. Join us September 3rd for the Cotton and Peanut Research Day in Tifton to see your checkoff dollars at work and discover the latest research findings from the UGA Cotton Team.

Drs. Wes Porter, Phillip Roberts, Bob Kemerait and Camp Hand discuss early season considerations with respect to planter and irrigation setup, thrips management, nematode and seedling disease considerations, and other topics pertinent to the early part of the 2025 growing season. 

Dr. Culpepper discusses new products for 2025, ESA requirements for newly labeled herbicides, utilizing integrated weed management tactics, and the dicamba situation (prior to Christmas). 

Dr. Porter discusses considerations for irrigation scheduling and trying to make the most of inputs in 2025.

Dr. Taylor Singleton discusses updates on sustainability and pesticide stewardship for the 2025 growing season. 

Dr. Bob Kemerait discusses updates for 2025 surrounding nematode and disease management.

Dr. Phillip Roberts discusses updates for 2025, largely revolving around tarnished and clouded plant bugs and their management moving forward in Georgia. 

Dr. Camp Hand discusses updates for 2025 including variety selection, CLRDV-induced bronze wilt, PGR management of modern cotton varieties, seeding rates, and deer research in cotton. 

Dr. Camp Hand introduces a series of episodes provided by the UGA Cotton Team, which will be updates going into 2025. These episodes will be released as county production meetings are ongoing, but they are not intended to replace production meetings. We look forward to seeing everyone in the counties from now until the first part of March!