Weed Management

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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Dicamba injury symptoms in a Roundup Ready soybean field
Figure 1. Dicamba injury symptoms in a Roundup Ready soybean field near Geneva. (Photos by Amit Jhala)

Dicamba Injury Reports Rise in Nebraska July 18, 2017

Reports of suspected dicamba injury to soybean and other sensitive crops are increasing. The author reviews application windows for dicamba in corn, a possible area of concern, and outlines what growers can do if they suspect dicamba injury in their fields.

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Figure 1.  Red Willow County winter wheat variety plot.

Post-Harvest Weed Control in Winter Wheat July 14, 2017

A strategy combining well-timed herbicide applications, split treatments, and effective cultural practices is key to managing weeds in wheat to reduce soil moisture loss and the weed seed bank. This story addresses what to consider as well as particular weed challenges in wheat.

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Wheat streak mosaic virus in wheat
Severe wheat streak mosaic virus in a wheat field in Deuel County on May 15, 2017. (Photo by Stephen Wegulo)

Why Control of Volunteer Wheat is Critical to Protecting 2018 Yields July 13, 2017

Timely control of volunteer wheat and other weeds is key to managing yield loss risk in your 2018 crop. Yield-limiting risk factors affected by weed control include wheat streak mosaic and other diseases, insects (wheat stem sawfly and disease vectors), moisture loss, and increased weed seed production.

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Liberty Link soybeans
Figure 1. Control of glyphosate-resistant common waterhemp with Valor XLT applied PRE followed by Liberty in Liberty Link soybean (Photos by Amit Jhala).

Liberty Label Revision Allows Rate Increase July 13, 2017

Liberty has revised its label to provide for an increased application rate in corn and soybean. View the new label rates for corn and soybean with a cumulative maximum per year of 87 fl oz/acre for either crop.

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Soybean field pre-canopy
Figure 1. Soybean field at North Platte, weeks away from reaching full canopy. Photo taken 7/4/2017.

Soil-Residual Herbicide Options For “Slow-To-Canopy” Soybeans July 7, 2017

Soil-residual herbicides are encouraged to enhance weed control options in slow-to-canopy soybeans reported across Nebraska.

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Market Journal screen shot

Market Journal: Using Dicamba, Irrigation Management & More July 7, 2017

Segments on this week's Market Journal address using dicamba, managing irrigation, research on the profitability of using precision agriculture, the forecast for next week and four upcoming hands-on, crop management clinics in eastern Nebraska.

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In Figure 1a the field on the right, with heavier crop residue, shows dicamba-tolerant soybeans that had been sprayed with new generation dicamba. The field on the left, non-dicamba-tolerant soybeans planted side-by-side without a buffer, shows symptoms of injury caused by dicamba, the consequences of spray drift or volatilization. Figure 1b illustrates how dicamba affects newer growth more than older leaves. (Photos by Tim Creger, Nebraska Department of Agriculture)

Dicamba Injury Symptoms on Sensitive Crops June 28, 2017

Dicamba-resistant soybean, genetically engineered to provide resistance to dicamba and glyphosate, was made commercially available for the 2017 growing season. This article looks at potential dicamba injury to sensitive crops and plants.

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