Weed Management

Video: Herbicide Resistance Nothing New March 17, 2017

UNL Weed Scientists on Weed Resistance

Read more

glyphosate-resistant Palmer amaranth
Figure 1. A female glyphosate-resistant Palmer amaranth plant in a soybean field in south-central Nebraska. This plant has the capacity to produce up to half a million seeds. (All photos by Parminder Chahal)

Glyphosate-Resistant Palmer Amaranth Confirmed in South-Central Nebraska March 15, 2017

Palmer amaranth (Amaranthus palmeri S. Wats.) is a C4 dioecious species (separate male and female plants) native to the southwestern United States.

Read more

Medusahead Grass
Figure 1. Medusahead seed head, Taeniatherum caput-medusae (L.) Nevski (Photo credit: Steve Dewey, Utah State University, Bugwood.org)

Detecting Invasive Species: Medusahead March 10, 2017

Growers are encourage to watch for Medusahead, an invasive weed species that is now in Wyoming and moving eastward. If it reaches the Pine Ridge area or Sandhills, it could cause devastating damage to the ecology and range production. The concept of early detection and rapid response, as described here, will be important to its containment.

Read more

Marestail seedling and field infested with marestail
Figures 1 (inset). Marestail plant forming rosette in spring. Figure 2. Corn field infested with glyphosate-resistant marestail in eastern Nebraska. (All photos by Debalin Sarangi).

When is a Good Time to Scout and Control Glyphosate-Resistant Marestail? March 8, 2017

Marestail, also known as horseweed or Canada fleabane, is a winter or summer annual weed in Nebraska. Historically, marestail was found in waste area, field edges, along roadsides, and railway tracks; however, no-till crop production systems over the last 20 years favor marestail germination and establishment in agronomic crops in Nebraska.

Read more

Soybean field treated with Sonic herbicide

New Soybean Herbicides for 2017 March 6, 2017

Information on new soybean herbicides, incuding their modes of action

Read more

New Corn Herbicides for 2017 February 24, 2017

Information on new herbicides for corn that will be available for the 2017 crop production season.

Read more

kochia seedlings
kochia seedlings

Q&A: When is the Best Time for Kochia Control? February 23, 2017

Wondering how best to manage the flush of winter annuals that came up during the recent warm spell? Are they likely to survive a return to winter conditions? This Q&A addresses these and related questions on pre-season weed management.

Read more

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.

Read more

Pages