Weeds & Invasive Plants
All Weeds & Invasive Plants Content
Dry Conditions May Hinder the Performance of Recently Applied Preemergence Herbicides
If a preemergence herbicide does not receive an activating rainfall, generally 0.5 to 1 inch of rain, many weeds will emerge, as the herbicide remains on the soil surface.
Saflufenacil-Resistant Kochia Confirmed in South Dakota
Saflufenacil is an herbicide that can be applied at a burndown timing before most South Dakota crops to effectively manage kochia. However, overreliance on saflufenacil has selected for resistant kochia in our region.
Spring Dandelion Control
If dandelions are present on your property this spring, an herbicide application may be worthwhile, because it can kill above-ground growth, meaning a reduced likelihood for seed production that will worsen problem.
Common Mullein and Houndstongue Have Germinated in the Black Hills and Surrounding Areas West River
Two biennial species, common mullein and houndstongue, have germinated and begun to grow in the Black Hills. Now is the time to scout and determine where areas need attention to manage these species and other weeds.
Noxious Weeds Have Germinated in East River South Dakota
Seasonal conditions have been favorable for weed germination, including biennial thistle, Canada thistle, and absinth wormwood. Learn some tips for scouting, identifying, and managing these noxious weeds before they become a problem.
Watch Temperature Forecast Before a Burndown Herbicide Application
As planting season approaches, no-till fields will likely need a burndown herbicide application to manage the established winter annual and early emerging summer annual weeds.
Early Preplant or Preemergence Applications for Weed Management in Corn: Which is better?
Preemergence herbicides should be a part of a successful weed management plan, as these applications limit the amount of early-season weed interference to limit yield loss and reduce selection pressure on herbicide-resistant weeds.
Herbicide Carryover and Planting Bare-Root Tree Seedling in New Windbreaks
Guidelines on herbicide carryover when planting bare-root tree seedlings in new windbreaks
2,4-D (Enlist One) and Glufosinate (Liberty) Additively Control Common Weeds in South Dakota Soybean Production
Fact sheet on the experiment to determine how 2,4-D and glufosinate, when applied alone or mixed, control common weeds and affect soybean yield.
Pasture Attacker: Woody Plants are Robbing Your Forage Production
Traditionally, the prairie is home to herbaceous vegetation, such as grasses and broadleaf plant species. Although many woody plants are naturally present in canyon, riparian, or river areas, they are not meant to be a part of the grassland landscape.