Amit Jhala - Extension Weed Management Specialist

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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Sprayer hose test

Removing Dicamba Residues from Your Sprayer: A Tricky Task

February 15, 2018
Thoroughly cleaning your sprayer both before and after applying dicamba is required and can help reduce the potential for off-target damage. Check these recommended practices and see what research at Mississippi State University found when testing sprayer hoses.

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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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Maximum daily temperature and humdity recorded at Harvard in June 2017
Maximum daily temperature and humdity recorded at Harvard in June 2017

Potential Off-Target Dicamba Movement from Corn Applications

February 15, 2018
While the new soybean dicamba herbicides were often blamed for injury to sensitive plants in 2017, a deeper look at the timing of injury and the weather conditions at those times suggests dicamba applications in corn may have contributed to plant injury in many areas. Increased management for all dicamba applications will be needed in 2018.

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Figure 1. Season-long glyphosate-resistant common ragweed competition in a soybean field near Adams.
Figure 1. Season-long glyphosate-resistant common ragweed competition in a soybean field near Adams.

Preplant Tillage to Manage Glyphosate-resistant Common Ragweed

February 13, 2018
Nebraska university weed scientists conducted research in 2017 to identify the effect of preplant tillage on weed emergence in an effort to develop an integrated weed management plan to control glyphosate-resistant weeds. Here's what they found.

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Herbicide label section
Figure 1. A careful read of the herbicide label provides important legal and educational information for your weed management program. An example of a group 2 herbicide from the sulfonylurea family and a list of other herbicides that belong to the same group and family. Paying attention to the group name makes it easier to ensure that herbicide(s) from the same group are not repeated within a growing season or the next year.

What Should You Look For in a Herbicide Label

January 26, 2018
A herbicide label is a legal document providing important information about a herbicide, its appropriate use, and the precautions needed to avoid off-target movement and to protect environmental quality. It can also help you achieve the most efficient and sustainable application. Learn more about what to watch for on herbicide product labels.

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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

January 8, 2018
To avoid some of the off-target dicamba injury that occurred in 2017, new label requirements and application recommendations are being made for 2018. This is an article from the Proceedings of the 2018 Nebraska Extension Crop Production Clinics.

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