Accurate identification of weedy Amaranthus species during early vegetative stages can be difficult. However, identification of the various species becomes much more reliable when reproductive structures are present.
Aerial seeding cover crop questions have been numerous this month. Indeed, the wet month of August does greatly increase the probability that aerial seeding will be successful as we enter September.
There is still time to ensure your soybean weed control programs worked by scouting those full-season soybeans for escapes and by selecting effective herbicides to control weeds in double-crop soybeans.
We’re already hearing that Palmer amaranth is making its presence known this season —both the University of Kentucky and Iowa State University reported infestations of the “pigweed on steroids” in their respective states recently, and it’s likely that more findings will pop up as the growing season continues.
A news release from the Weed Science Society of America last week covered the results of a study in Arkansas cotton fields to determine the effect over time of releasing 20,000 glyphosate-resistant Palmer amaranth seeds in a patch, within a 1-square-mile area.
This devastating pigweed is starting to make its way into the Corn Belt. Here’s what no-tillers need to know to protect their crops from this voracious pest.
There’s just nothing good that can be said about Palmer amaranth. It’s capable of wiping out 78% of soybean yields and a whopping 91% of corn yields on a given farm. Studies have shown populations are resistant to glyphosate, atrazine and HPPD-inhibiting herbicides.
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On this episode of Conservation Ag Update, brought to you by Martin-Till, Brian and Darren Hefty, fourth-generation farmers and hosts of Ag PhD, share tips for treating tar spot in corn.
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