Amit Jhala - Extension Weed Management Specialist

Q&A on Terminating Cereal Rye, Applying a PRE April 25, 2018

A grower questioned: My cereal rye cover crop is only 3 to 5 inches tall going into planting season. Can I combine two field operations in one by applying glyphosate to terminate cereal rye and tank-mixing a residual herbicide for early season weed control? Nebraska Extension Weed Management Specialist Amit Jhala answers.

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Cover crop field with mixed-species plantings
Later season field of cover crops in southeastern Nebraska. (Photo by Paul Jasa)

Timing of Cover Crop Termination and Related Factors April 20, 2018

Should the cold spring delay cover crop termination? Growers walk a fine line between growing cover crops long enough to get the biomass they want without reducing yield in the following grain crop. This discussion from an agronomist, entomologist and weed scientist looks at various factors to consider.

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How Temperature and Rain Can Affect Burndown Herbicides April 18, 2018

Finding a good time for burndown herbicide applications has been a little tricky this spring, given the below-normal temperatures the first half of April and intermittent snow and rain, all of which can decrease herbicide efficacy. Checking the forecast can help identify an optimal window for application.

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Planning Ahead for Winter Wheat: Review Corn and Soybean Herbicide Programs April 13, 2018

If you're considering planting winter wheat next fall, be sure to review the corn and soybean herbicide programs you plan to use this spring to avoid rotation restrictions that would limit your cropping options.

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soybean leaf cupping
Figure 1. Leaf cupping of non-Xtend soybean is one indicator of crop injury from dicamba off-target drift.

Dicamba Off-target Injury Issues in Nebraska Soybean April 9, 2018

Dicamba- and glyphosate-resistant soybean, also known as Roundup Ready 2 Xtend soybean, became commercially available for the 2017 growing season. About 500,000 acres were planted with Xtend soybean in Nebraska in 2017 growing season. Three dicamba-based herbicides — XtendiMax, FeXapan, and Engenia — are labeled for application in Xtend soybean.

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Glyphosate-resistant common waterhemp in soybean without a pre-emergence herbicide with multiple sites of action.
Glyphosate-resistant common waterhemp in soybean without a pre-emergence herbicide with multiple sites of action.

Pre-emergence Residual Herbicides are the Foundation of Soybean Weed Control March 29, 2018

Even with new dicamba-resistant soybeans, pre-emergence, residual herbicides are needed to mitigate yield loss due to weed competition, provide a longer time for soybean to establish, and reduce selection pressure for weeds resistant to post-emergence herbicides.

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Photo of field trial studying management of glyphosate-resistant ragweed

Herbicide Options for Managing Glyphosate-resistant Common Ragweed in LibertyLink Soybean March 1, 2018

Results from a 2017 weed management trial on glyphosate-resistant ragweed indicated two applications were often more efficient and cost effective than either three applications or one application of herbicide.

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An eastern Nebraska field with dicamba injury.
This eastern Nebraska soybean field was injured by off-target dicamba movement to a sensitive crop. Applying best management practices to all dicamba applications can help reduce the likelihood of similar whole-field damage in 2018.

Can We Manage Dicamba Applications in 2018? February 15, 2018

Factors leading to dicamba injury and how growers will need to practice best management practices with all dicamba applications in 2018 to help reduce injury to susceptible crops and other plants. This article discusses key practices to implement.

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