There was a significant emergence of ryegrass during the middle of March in many fields (Picture 1). This coupled with all the early planting has led to fields infested with ryegrass along with emerged corn or soybean. Continue reading
This planting season is off to a very early and quick start. At the current pace many acres will be planted by Easter Sunday. The questions continue to be on how to contend with ryegrass. Continue reading
Planting is well underway! Unfortunately, ryegrass is still present in some fields. Our research has shown this spring that tankmixes of clethodim + glyphosate (Picture 1), Sharpen + glyphosate and Reviton + glyphosate have been the most consistent ryegrass options. Continue reading
This has been an interesting burndown season so far for a couple of reasons. First, the dry weather in late 2025 and early 2026 allowed many acres to be sprayed in January and early February. The number of acres treated during that period is truly impressive. Even better, most of those applications were very successful! Most weeds, including ryegrass, were controlled. Continue reading
We recently rated our Italian ryegrass screen in the greenhouse for glyphosate and clethodim resistance. The first two runs were conducted on 13 populations across 11 counties in West Tennessee. Continue reading
Italian ryegrass is becoming one of the most troublesome weeds in the Mid-South for many reasons, including herbicide resistance. Herbicide-resistant Italian ryegrass is particularly problematic due to its ability to survive applications of glyphosate and clethodim. The most effective way to control ryegrass is to prevent emergence by applying residual herbicides in the fall. Tennessee has many relatively hilly fields, which raises concerns about soil erosion without some winter plant coverage. Although fall residual herbicides are effective for controlling ryegrass, the limited time available during the busy harvest season often makes applications impractical. Continue reading