St John’s wort is a perennial broadleaf weed that spreads aggressively through creeping roots and seeds, forming dense patches in pastures, fence rows, roadsides, and disturbed ground. It is toxic to livestock and can cause photosensitivity, weight loss, and death when consumed in quantity. Because it is a broadleaf species, selective herbicides control it without … Read more
Post emergent herbicides are applied after weeds have emerged from the soil, targeting the leaves and stems of actively growing plants. They are the second half of most weed-control programs: pre-emergent products stop seeds from germinating, while post-emergent products kill the weeds that got through. Understanding the major post-emergent options helps growers and gardeners match … Read more
Group 1 herbicides are ACCase inhibitors used primarily for post-emergence control of susceptible grass weeds. They inhibit acetyl-CoA carboxylase (ACCase), an enzyme involved in fatty-acid biosynthesis, disrupting the growth of susceptible grasses and making this herbicide group an important tool in many weed-management programs. The Group 1 designation comes from the HRAC/WSSA herbicide site-of-action classification … Read more
Herbicide resistance has become one of the most serious threats to modern crop production, reducing yields and increasing costs across millions of acres. More than 500 weed species worldwide have developed resistance to at least one herbicide group, and the number continues to grow each year. Once resistance develops in a field, it cannot be … Read more
Using the same herbicide repeatedly is dangerous because it accelerates the development of herbicide-resistant weeds, degrades soil health, and increases the risk of crop injury, water contamination, and long-term environmental damage. Repeated applications of a single active ingredient create selection pressure that favors resistant individuals, and those survivors multiply until the herbicide no longer works … Read more
Choosing the right herbicide for Clearfield sunflowers is critical for growers who want clean fields and strong yields without damaging their crop. Clearfield sunflowers are bred with resistance to imazamox, an ALS-inhibitor herbicide that controls a broad spectrum of broadleaf weeds and grasses. This trait allows growers to spray over the top of the crop, … Read more
Top herbicides for mesquite control are essential tools for ranchers, landowners, and pasture managers battling one of the most invasive woody plants in the southwestern United States. Mesquite (Prosopis spp.) spreads aggressively across rangeland, competing with desirable grasses for water and nutrients while reducing grazing capacity and property value. Once established, mesquite is difficult and … Read more
Choosing the right pre emergent herbicide for foxtail can prevent troublesome annual grasses from establishing before they compete with turf, crops, pastures, and other desirable vegetation. Foxtail species such as green, yellow, and giant foxtail are summer annual grasses that reproduce primarily through seed, making prevention before emergence an important management strategy. Foxtail seeds can … Read more
Choosing the right pre emergent herbicide for weed control can help prevent annual weeds from establishing before they compete with crops, turf, ornamentals, and other desirable plants. These soil-active herbicides target susceptible weeds during germination or early emergence, making timing and application conditions important for consistent results. A successful pre-emergence program depends on more than … Read more
The best insecticide for tree borers can help protect valuable trees when boring insects begin attacking trunks, branches, and other woody tissues. Because larvae often remain concealed beneath bark or inside the wood, successful control depends on identifying the borer, understanding its life cycle, and selecting a treatment that reaches the vulnerable stage. Tree borer … Read more