Weed Management in Nebraska Crop Production

Guide for Weed Management in Nebraska with Insecticide and Fungicide Information

Nebraska Extension EC130

Order print and downloadable digital editions at Marketplace.unl.edu. 

FieldWatch — Sensitive Crop Locator

From the Nebraska Department of Agriculture

FieldWatch identifies locations in Nebraska where sensitive crops such as grapes and organics are grown. After sensitive sites are identified, a pesticide applicator can take appropriate action to avoid injuring the crop due to herbicide drift, etc.

Publications on General Topics in Weed Science

 
Use of Herbicide Tolerant Crops as a Component of an Integrated Weed Management Program (NebGuide G1484, *PDF version, 290 KB; 4 pages). This NebGuide provides general guidelines for using herbicide tolerant crops in an integrated weed management program to ensure the long-term viability and profitability of this technology while protecting natural resources.

A Quick Test for Herbicide Carryover in the Soil (NebGuide G1891, *PDF version, 745 KB; 3 pages). How can you tell if you have herbicide carryover in your fields? Plants grown in soil samples can tell.

Weed Targeting Herbicide Management: Precision Agriculture (EC708, PDF, 358KB; 6 pages). Site-specific weed management and herbicide application is an effective way to minimize herbicide costs, maximize weed control and prevent unnecessary environmental waste. This publication, part of the precision agriculture series, explains basic principles of site-specific weed control.

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Downy brome, also know as cheatgrass, in a field
Figure 1. Downy brome (cheatgrass) is greening up in a pasture in Scottsbluff County due to recent warmer temperatures; photo taken February 20, 2017. (Photo by Cody Creech)

Take Advantage of Warm Weather this Winter to Control Downy Brome February 20, 2017

Just a month after double-digit below zero temperatures, Nebraska hit an extended period of above normal temperatures, coaxing weed seeds to germinate early in many fields and pastures and creating the need to tackle the influx early.

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Dormant Spraying Alfalfa Weeds February 17, 2017

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Section of the Herbicide Classification Chart
Section of the Herbicide Classification Chart

2017 Chart for Selection of Herbicides Based on Site of Action February 2, 2017

Management of glyphosate-resistant weeds is now the greatest challenge for Nebraska crop producers and land managers. The 2017 Herbicide Classification Chart from Take Action Against Weeds is an easy means for identifying herbicide site of action to avoid repeated use of the same action on the same field.

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sunflower herbicide efficacy table

Using Herbicide Prices and Efficacy Ratings to Select for Top Value January 17, 2017

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Photos of pigweed species
Figure 1. Common pigweed species found in the Nebraska Panhandle. Palmer amaranth and waterhemp are ALS-resistant. Images, from top to bottom in each column, are of seed, seedlings, and plants in the vegetative growth stage. (Source Nebraska Extension EC94-138)

Management of ALS-Resistant Palmer Amaranth and Waterhemp in the Panhandle January 6, 2017

Palmer amaranth and waterhemp in the Panhandle are resistant to ALS-inhibiting herbicides. While control of these weeds in dry bean can be challenging, corn, irrigated small grains, and sugarbeet make good rotation options for control. A combined pre/post treatment strategy controls weeds in the early part of the season when crop yield is most impacted and weed species are most susceptible to control inputs.

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