Ernst Undesser

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Illinois Corn, Soybeans: Emerging Crops and Delayed PRE Herbicide Applications

Soil-residual herbicides are important components of integrated weed management programs. Labels of many single and multiple active ingredient products allow application before and after...

Florida: Enlist Crop Technology and Requirements for Herbicide Application

Enlist crop technology (2,4-D-tolerant) allows for the application of 2,4-D choline herbicide products on Enlist Cotton, Enlist Corn, and Enlist E3 Soybean. The newer...

Pennsylvania: Weird Weather and Weed Wrangling

With the weird weather we have been experiencing, there are areas of the state that have already planted and sprayed pre herbicides, while others...

Midsouth Corn, Cotton, Soybeans, Rice: What to Know for Sedge Management...

Jason did a recent episode of the Weeds AR Wild Podcast with Tommy Butts from the University of Arkansas Systems Division of Agriculture.  Jason...

Minnesota: Can I Plant a Cover Crop if I Used a...

With postemergence herbicide supply issues creating challenges for 2022 and possibly into 2023, using a preemergence herbicide with residual activity as part of a...

Iowa Planting: In the Mad Rush, Don’t Forget Your Herbicide!

This spring's weather has resulted in an unusually slow start to the growing season, especially when compared with the past two years. In springs...

Mitigating Herbicide Mixing Issues

There have been numerous reports of mixing issues when either Roundup PowerMax 3 or Gramoxone is added to the tank with residual herbicides like...

Georgia: 4 Weed Management Considerations

Here are a couple of things to think about based upon recent phone calls/texts and observations from some of my current research projects. 1. If...

Spray Drift: A Serious Problem You Can Manage

Spray drift not only result in wasting expensive pesticides and pollution of the environment, it may damage non-target crops nearby, and poses a serious...

Tennessee: Still Seeing Good Liberty Control on Palmer Amaranth

Results from our greenhouse screens of Palmer amaranth to Liberty has been very encouraging.  We feared that the Liberty resistance documented in Arkansas had...

Springtime Is Spray Time – 10 Tips for Better Spraying

Applying pesticides requires a high level of skill and knowledge. Increases in the size and complexity of sprayers over the years require even more...

Tennessee Corn: Ryegrass Management in Newly Emerged Crops

The call of the last week has been ryegrass and/or Poa escaping burndown in a number of fields that have been or will be...

Soil Applied Herbicides And Rainfall For Activation

Fieldwork has progressed slowly in the past couple of weeks due to frequent rain showers and cool soil temperatures.  At this point, there is...

Winter Wheat: Warning – Herbicide Applications Under Cold Conditions Increase Injury

Spring weather conditions have provided little opportunity for field work, including herbicide applications for weed control in winter wheat. While temperatures have fluctuated and...

Provisia and Max-Ace Rice and their Herbicides

With our rice planting still on-going, we wanted to remind everyone about the importance of following the herbicide label and rice seed agreements regarding...

Need Help Identifying Weeds? There Are Apps for That!

A cornerstone of any effective weed control program is finding and treating bothersome weeds before they become established and spread. Unless you are an expert, though,...

Tennessee: Poor Burndown Performance

There have been a number of reports on disappointing burndown applications that were applied during that cold stretch, 3 to 4 weeks ago, when...

Mixing Order for 2 Difficult Tank Mixes: Reflex + Gramoxone and...

The two most difficult tank mix partners I get complaints about are Reflex (fomesafen) + Gramoxone in cotton and Atrazine + Halex GT (mesotrione...

Midsouth: Challenges with Ryegrass in 2022 – Podcast

Daniel Stephenson with the LSU AgCenter calls into the Crop Doctors’ Podcast studio in Stoneville to once again discuss challenges with Italian ryegrass management...

Nebraska: Enlist E3 Soybean – Which 2,4-D Product Should I Use...

Enlist corn and Enlist soybean producers in Nebraska will be able to use Enlist ONE (2,4-D Choline) and Enlist DUO (2,4-D Choline + Glyphosate)...