Weed Management

Thistle rosette - best controlled in the fall.
Figure 1. This fall scout for and treat small thistles before they become more difficult to treat next spring.

Thistle Control in October

September 19, 2019
Timing is everything when controlling troublesome #thistle patches. Herbicides work best in the fall when rosettes are small.

Read more

Snippet of the Weed Science Survey

Stakeholders’ Help Needed to Identify Nebraska Weed Issues

September 11, 2019
What are your weed challenges? Growers, agronomists, and certified crop advisors are being asked to take a short survey to identify current cropping systems and weed issues with an eye toward directing future research in Nebraska.

Read more

Popcorn at V9 growth stage where PRE herbicide had been applied

Pre-emergence Herbicide Delays the Critical Time of Weed Removal in Nebraska Popcorn

September 9, 2019
Understanding the critical time of weed removal (CTWR) and how a pre-emergence herbicide application can shift it is helpful for designing the most efficient weed management program in popcorn.

Read more

Wheat field with significant standing residue following harvest
Using a stripper header can leave significant standing residue to catch more snow in winter and reduce soil moisture evaporation. It also will taken longer to decompose, protecting the soil over a longer period. (Photos by Bob Klein)

Managing Wheat Residue and Controlling Weeds

August 30, 2019
Due to the late wheat harvest throughout western Nebraska, weeds growing in unharvested fields grew much longer than usual. In some fields weeds matured and produced seed. These weed control measures and residue management will be particularly important for the next wheat crop.

Read more

Suspected off-target dicamba injury to soybean. Cupped leaves are often indicative of dicamba injury. (Photos by Amit Jhala)
Figure 1. Suspected off-target dicamba injury to soybean. Cupped leaves are often indicative of dicamba injury. (Photos by Amit Jhala)

Dicamba Off-Target Injury Continues in 2019 in Nebraska

August 16, 2019
As the crop season progresses, questions about dicamba off-target injury in soybean, broadleaf crops, and trees are increasing in Nebraska. If you suspect off-target injury in one of your fields, here's a reminder of what to do.

Read more

Figure 1. Weeds that are cut off with the combine header will need to regrow before they can be controlled.
Figure 1. Weeds that are cut off with the combine header will need to regrow before they can be controlled.

Controlling Weeds Post-Harvest in Winter Wheat

July 12, 2019
Wet weather this year made timely herbicide applications in winter wheat difficult, allowing substantial weed populations to get a foothold. The author discusses cultural and chemical options for weed management.

Read more

Figure 1. Figure 1. The wheat-mite-virus complex has extreme potential to impact yield the following year if high risk volunteer wheat situations are not managed well
Figure 1. Figure 1. The wheat-mite-virus complex has extreme potential to impact yield the following year if high risk volunteer wheat situations are not managed well. (Photo by Gary Hein)

Why Control of Volunteer Wheat is Critical to Protecting 2020 Yields

July 12, 2019
Volunteer wheat can create a "green bridge," providing a route for mites to move to and infest emerging wheat. These mites can then transmit wheat streak mosaic virus, High Plains virus, and Triticum mosaic virus, or all of them to create a complex of infections.

Read more

KSU: Pre-harvest Weed Control in Wheat - Sharpen Update

July 11, 2019
A Kansas State University weed scientist discusses pre-harvest options for managing weeds in winter wheat, including advantages and disadvantages of various labeled herbicides.

Read more

Pages