Ernst Undesser

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Tennessee Corn: Ryegrass Management

Ryegrass appears to have escaped burndown in a number of fields that have been planted to corn.  In most cases the ryegrass escaped a...

Mississippi Corn, Soybeans: Early-Season Weed Control – Podcast

Daniel Stephenson with the LSU AgCenter calls into the Crop Doctors’ Podcast studio in Stoneville to talk about early-season weed management topics…corn weed control,...

Tennessee: Palmer Pigweed Has Started to Emerge

Palmer amaranth has begun to emerge and unfortunately it is not a problem to find seedling Palmer in our fields. This is not a...

Georgia: 5 Thoughts on Herbicides Following the Big Rain

Most of Georgia received a significant rainfall event on April 24, 2021 (Figure 1).  Some areas received more than than 6".  Consequently, my phone...

Kentucky Soybeans: Residual Herbicide Decision Publication Now Available

The successful control of waterhemp and Palmer amaranth in soybean has consistently come back to the use of a residual herbicide at soybean planting....

Southeast Cotton: Preemergence Herbicide Treatments Behind the Planter

Cotton planting will be in full swing in just another week or two. One thing that I cannot emphasize enough is to START CLEAN...

Iowa Soybeans: Cover Crop Termination Timing for Improved Weed Control

Current cooler weather conditions are posing challenges for growers with a cereal rye cover crop to get it terminated. However, for growers planning to...

Iowa: Preemergence Herbicides, Dry Soils, and Rain

The potential for continued dry weather across the state raises concerns about the impact of dry soils on preemergence herbicides. Preemergence herbicides kill weeds...

Missouri: New Dicamba Label Requirements

With the recent EU approval of Xtendflex soybean, commercial launch will begin in 2021. In addition, the US EPA has registered 3 dicamba products...

Alabama Cotton: PRE Treatments Behind the Planter

Cotton planting will be in full swing in just another week or two. One thing that I cannot emphasize enough is to START CLEAN...

Alabama Cotton: Ryegrass Burndown Without Roundup

Glyphosate-resistant ryegrass is getting more prevalent in Alabama row crop fields, particularly in no-till and strip-till fields where tillage is not applied intensively. This...

Louisiana: Ryegrass Control – We Are Not Faring Well

The major issue I have discussed with Louisiana crop producers, LSU AgCenter parish agents, agricultural consultants, and agricultural industry this year is glyphosate-resistant Italian...

Nebraska: Cover Crop Termination Tradeoffs

A fall-planted cereal rye cover crop can have both positive and negative impacts, for example by tying up nitrogen, reducing soil moisture prior to...

Arkansas Rice: Cattail Control

The past few years of increased rainfall and persistent wet conditions have resulted in some rice fields that haven’t dried out for multiple years....

Arkansas Rice: Switching POST Residual Herbicides to PRE

A lot of our focus in rice residual herbicide programs is placed on grass control, especially as barnyardgrass is consistently listed as the most...

Corteva Sheds Dicamba Herbicides – DTN

Corteva Agriscience has pulled the plug on a new developmental dicamba product, the last in a series of moves over the past year to...

Tennessee: Herbicides in Short Supply, Choosing the Right Alternatives

The constant word I am hearing from retailers is that many herbicides are in tight or limited supply going into the spring.  This all...

Ohio: Dandelion Control – Spring/Summer Herbicide Options

Dandelion seems to be on the increase in some fields, as we noted in a video last summer and CORN article last fall.  Fall is the optimum...

Alabama Corn, Soybeans: Burndown and Preemergence Herbicide Options – Video

In this edition of On The Farm in Alabama, Dr. David Russell, Alabama Extension weed scientist, and Extension Agent Eddie McGriff discuss corn and...

Iowa: Expectations for Volunteer Corn This Spring

Volunteer corn remains high on many minds this spring and one of the biggest questions is how much of those corn seed will germinate...