Amit Jhala - Extension Weed Management Specialist

Clump of volunteer corn in corn
Figure 1. Corn losses last fall are leading to widespread volunteer corn in crop fields this season. If not controlled, they could lead to yield reductions. (Photo by Jenny Rees)

Impacts of Volunteer Corn on Crop Yields

June 1, 2018
University research conducted in several Midwest states indicates the impact of volunteer corn on corn, soybean, dry bean, and sugarbeet yields.

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Volunteer corn in soybean
Figure 1. Several herbicide options are available for managing volunteer corn in soybean. Management in corn will be more challenging. (Photo by Jenny Rees)

Control of Volunteer Corn in Soybean and Corn

June 1, 2018
Volunteer corn is a competitive weed in the corn/soybean cropping system and if not controlled, may result in a yield penalty and contribute to survival of gray leaf spot and western corn rootworm. Consider these options for managing volunteer corn in soybean and corn.

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Figure 1. Palmer amaranth curling within a week of spraying a postemergence dicamba product to corn. (Photo by Jenny Rees)

Considerations for Postemergence Dicamba-based Herbicide Applications to Corn

May 31, 2018
With postemergence herbicide applications occurring to corn, consider these best management practices to improve results and reduce the potential for off-target injury from your dicamba application.

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Image from time-lapse weed management photos

Consider Weed Growth Stage for Optimum Control with Liberty Application

May 23, 2018
Consider these three guidelines to ensure maximum weed control with Liberty in LibertyLink corn and soybean and view a time-lapse video demonstrating how quickly waterhemp regrows when treatment occurs after the optimal weed height of 4 inches or less.

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Weed Management and Cover Crops Field Day Flyer

Weed Management and Cover Crop Field Day at SCAL

May 22, 2018
View demonstrations of new technologies and herbicides for weed control in corn, soybeans, and sorghum and cover crops effects on soil health and pest management at the June 27 Weed Management and Cover Crops Field Day. It will be held at the South Central Ag Lab near Clay Center.

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Field of cover crops

Q&A on Spring Herbicides and Fall Cover Crop Plantings

May 14, 2018
Grower question: Can I use a herbicide like Callisto, with mesotrione as its active ingredient, now and plant radishes and turnips for a cover crop in early September?

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Marestail rosette

Residual Herbicides Best Suited to Spring Marestail Management

May 2, 2018
Marestail, also called horseweed, is sensitive to most herbicides labeled for its control early in its growth stage, i.e. the rosette stage. Delaying treatment can allow it to compete with corn and soybean, potentially causing significant yield reduction.

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Broadleaf weeds

Q&A: Which Dicamba Product Should I Use to Kill Broadleaf Cover Crops or Burndown Weeds Before Xtend Soybean?

April 27, 2018
With a delayed or compressed planting season, this week several growers asked whether they could immediately plant soybeans after a dicamba application. See how Extension Weed Scientist Amit Jhala replied.

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