Amit Jhala - Extension Weed Management Specialist

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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Graph showing level of damage compared with date of dicamba application

Results of 2017 Survey on Nebraska Soybean Farmers’ Adoption of Xtend Technology and Off-Target Dicamba Movement December 14, 2017

In summer 2017, 312 Nebraska farmers from 60 counties responded to a survey on their perception on dicamba use in Xtend soybeans. The survey asked about outcomes of applying dicamba in Xtend soybeans and perceived injury in non-Xtend soybeans.

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field pennycress post herbicide app
Figure 1. Survival of field pennycress due to application of burndown herbicide when the temperature was below 40°F for an extended time. (Photos by Amit Jhala)

Low Temperature and Frost May Affect Efficacy of Burndown Herbicides November 9, 2017

In many areas fall herbicide applications were delayed due to the late harvest. Applications can still be effective, depending on weeds present, temperature, rate of herbicide and additives used. The article offers recommendations for these late-fall applications and their importance, particularly for control of herbicide-resistant marestail.

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Figure 1. This new Nebraska Extension circular offers information on distinguishing the major grasses found in Nebraska cropland when they're small and should be managed. (A) Auricles of Canada wildrye clasping the stem, and (B) ligule and auricles of Canada wildrye.

New Nebraska Resource on Identifying Grass Weeds in Crops September 13, 2017

A new Nebraska Extension guide shows how to identify and differentiate various grass weeds common to Nebraska agronomic fields.

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Cover of NebGuide G2276

Review Herbicide Restrictions Before Planting Forage Cover Crops September 8, 2017

Forage cover crops after corn or soybean have restrictive plant-back restrictions. These two Nebraska Extension resources offer further information on what to check before planting cover crops this fall.

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Figure 1. Dicamba injury to 40 acres of soybean near Geneva due to volatility/temperature inversion. (Photo by Amit Jhala)

Tell Us about Your Dicamba Use and Suspected Injury in Soybean August 18, 2017

Nebraska Extension educators and specialists would like to hear from growers and agribusiness about their experiences with dicamba this season. Information can be shared via an online survey or by contacting them directly with the email provided.

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