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Herbicide-Resistant Kochia: What We Know – and Don’t Know – About This Troublesome Weed

The broadleaf weed kochia is a real and growing threat to major cropping systems and soil conservation practices across the Great Plains. Some kochia populations are now resistant to as many as four herbicide sites of action, making it imperative that we understand more about the weed and how to manage it. more »

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Rethinking Invasive Weed Control: Sometimes Treating Fewer Plants Can Produce a Greater Impact

When battling invasive weeds, it’s easy to conclude that treating the largest masses first is the best strategy. But scientists writing in the journal Invasive Plant Science and Management say that isn’t always best. more »

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For Effective Henbit Control, Timing Matters

Spring-applied herbicides are no match for henbit, a winter annual weed found in more than 50 crops – including corn, cotton and soybean. But researchers say a simple change in application timing can make all the difference. more »

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Research Focuses on Factors that Fuel New Plant Invasions

Which environmental factors are most important to the establishment of new plants of invasive species? Is it seed dispersal from existing plants? Canopy disturbance? Disturbance to the soil or leaf litter? more »

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Researchers Document the Role Rainfall Plays in Organic Weed Control

Organic  growers can face tough challenges when it comes to weed control.  But new research published in the journal Weed Science shows weather conditions and well-timed cultural management techniques can make a big difference. more »

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New Study Shows Timing is an Important Factor in Auxin Damage

With the introduction of crops engineered for resistance to the auxin herbicides, concern has soared about unintentional injury to auxin-sensitive crops through off-target spray drift, volatility more »

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Scientists Confirm First Case of Waterhemp With Six-Way Resistance

A study featured in the journal Weed Science is certain to keep many corn and soybean growers up at night. Researchers have identified a waterhemp population in Missouri that is resistant to a record-breaking more »

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New Approach to Harvest-Time Weed Seed Control Benefits Conservation Cropping Systems

Australian farmers have long considered harvest-time weed seed control their “last chance” opportunity to battle herbicide-resistant weeds that survive in-crop treatments. The only downside is that commonly used more »

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Battling Chinese Privet? You Can Get Great Control With Significantly Less Herbicide Than You Think

Chinese privet is a common fixture in the southeastern United States – typically found growing in dense thickets along roadsides, on rights of way and in forests. One common control strategy is to cut away the shrub’s thick foliage and more »

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Want Better Control of Glyphosate-Resistant Giant Ragweed? Herbicide Mixtures May NOT Be the Answer

Scientists at Purdue University have just answered an important question that has plagued many corn and soybean growers. Why does mixing glyphosate with other selective herbicides sometimes fail to control glyphosate-resistant giant ragweed plants? more »

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