This week will be the start of the early POST applications in cotton. These applications are often critical to not only curtail weed competition but to combat thrips injury as well. The biggest concern with these applications is injury to the young cotton plants. Continue reading
Recent burndowns that are targeting Palmer amaranth with paraquat are working quite well on that weed. Unfortunately, that is not the case on some grass weeds like barnyardgrass, junglerice and crabgrass. Once those grasses get 4” or more in height paraquat often struggles to provide good control. Continue reading
As we get closer to wheat harvest Italian ryegrass has become very apparent in some wheat fields in West Tennessee. At this point it is too late to try to control this weed with a herbicide. However, it is a very visual reminder that the best time to control ryegrass in wheat is in the fall. Continue reading
Wet and cold with more rain in the forecast. Ugg! That sums up our spring planting season to date. Hopefully, next week, we will get our break and can get a good bit done in the field. When that time comes, please remember to use best management practices applying all herbicides but particularly dicamba containing products! Continue reading
The results of some studies UT Extension has done to try to determine why junglerice has become a major weed pest in Tennessee Xtend cotton and soybean acres has provided some insights. This research was in-part supported by the Tennessee Soybean Promotion Board and from Cotton Incorporated. Continue reading
We have started to notice Junglerice/Barnyardgrass emergence here in West Tennessee on Tuesday (April 28th). The key way to ID junglerice at this young stage is the purple base and flat stem. As the grass matures, you will start to notice some purple striping on the leaves as well as not having a ligule.
This is an update to a post run several years ago. You can also download a print-friendly PDF version of this article here, Knotroot Foxtail Facet L Fact Sheet-Revised.
Knotroot Foxtail
Knotroot foxtail is a warm-season perennial grass that is also known as knotroot bristlegrass or simply perennial foxtail. It is native to the Americas and can be found throughout Tennessee in hay fields, pastures, lawns, roadsides and waste sites.
Knotroot foxtail is difficult to control. Some of the most serious knotroot foxtail problems are in bermudagrass hay fields. The Continue reading
Poor control of poa (annual bluegrass) and ryegrass have been the common calls of late. This is becoming more common every spring. It would appear that an increasing portion of the poa and ryegrass populations in Tennessee has evolved some level (2 to 4x) of glyphosate resistance.
