Iowa: Palmer Pigweed in 5 Counties and You Thought Waterhemp Was Bad

Palmer amaranth was first identified in Iowa in 2013. Currently, we know it is established in 5 Iowa counties (Fig. 1). This past weekend we...

Pennsylvania: BAG IT! and Other Tips for Resistant Pigweed and Waterhemp Management

Management options for weed escapes in soybeans are limited at this point in the growing season. The goal is to prevent the spread of...

Ohio Weeds: Resistant Palmer Amaranth Holding Steady; Waterhemp Worse

The frequency of Palmer amaranth infestations in Ohio seems to be holding relatively steady again into this year with the exception of one county,...

Indiana: Purdue Offers Herbicide Resistance Weed Screening – Video

The Purdue Weed Science group is again offering herbicide resistance screening for Palmer amaranth, waterhemp, and giant ragweed for the 2016 growing season.  The...

Nebraska: New Herbicides; Multiple Herbicide-Tolerant Crops

Weeds are the major pest in agriculture, causing about 34% crop yield loss, on average, worldwide. Non-chemical weed control methods are effective, but labor-intensive,...

Pennsylvania: Late-Season Horseweed Control – Preventing Seed Dispersal

Horseweed in Pennsylvania is beginning to flower and will start dropping seed in the coming weeks – learn why it’s important to remove any...

Ohio: Got Waterhemp? Find Out the Herbicide Resistance Characteristics Now.

We have spent a lot of time educating and warning about Palmer amaranth, but while we were doing this, waterhemp has become a more...

Ohio Wheat: Marestail Control – Cover Crop Considerations

Following last week’s article about marestail control in wheat stubble, a number of people asked about options where cover crops are going to be...

Mississippi: Managing Pigweed on Field Borders

One area of concern in glyphosate-resistant (GR) Palmer amaranth management is controlling this species on turnrows, field borders, and ditchbanks. Clean crop fields surrounded...

Atrazine Phase Out: What are the Alternatives for Sweet Corn?

Atrazine, one of the oldest and most commonly used herbicides in sweet corn, is being phased out in some production areas, leaving growers searching...

Herbicide Drift: Dicamba Off-Target, Off-Label Crop Injuries Multiply – DTN

Reed and Curtis Storey didn't plant dicamba-tolerant crops this year, but their soybean crop has been injured twice by applications made by neighboring farmers...

Palmer Pigweed: Have Prayer on Your Side, This Enemy is Everywhere – DTN

The fields of southern Pennsylvania are no stranger to painful battles, but that doesn't make the state's latest invasion any less alarming.Palmer amaranth weeds...

Tennessee: Unfertilized Cover Crop May Reduce Nutrient Losses from Fields

Using what is known as a Soil and Water Assessment Tool (SWAT), scientists with the University of Tennessee Institute of Agriculture have modeled what...

Monsanto and DuPont Sign Dicamba Supply Agreement

Monsanto Company and DuPont today announced a multi-year dicamba supply agreement for the U.S. and Canada. Terms of the agreement were not disclosed.“This agreement...

Tennessee Cotton: Post-Direct and Hooded Mixtures for Late Season Pigweed Control

Many cotton acres are nearing the true “laying it by” application timing.  Given how Palmer amaranth just keeps coming this year these directed applications are...

Iowa Weed Management: Learning From This Year’s Triumphs, Failures

Most herbicide applications have ceased for the year, but it is not too late to evaluate how well the program worked and what changes...

Weed Scientists Say Herbicide Resistance Predates GMO Crops by 40 Years

You may think weeds resistant to herbicides are a new phenomenon linked to the overuse of glyphosate in genetically engineered crops, but according to...

Off-Target Herbicide Movement: What You See Is Not What You Get

Off-target herbicides may be invisible, but that doesn’t mean they don’t exist.Off-target herbicides damage crops, ornamentals and other vegetation in nearby fields when droplets...

Illinois Soybeans: Preharvest Intervals for Postemergence Herbicides

Almost all postemergence soybean herbicides have a preharvest interval or a soybean developmental stage beyond which applications cannot be made specified on their respective...

Weed Management: Herbicide Performance Affected by Water Temperature

A new Purdue Extension publication gives applicators of postemergence herbicides insights into the importance of mixing herbicides with water at optimum temperatures to make...