All posts in Central Plains
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Armyworms Begin to Forage Soybeans
May 23, 2017 · No comments
Caption: Fall armyworm As many entomologists predicted, the mild winter and wet spring have created perfect conditions for early pressure from insects this season. Recent entomologist reports indicate that some insect populations are already approaching economic thresholds in the Mid-South. Gus Lorenz, extension entomologist at University of Arkansas, told Syngenta Pest Patrol that he’s already received reports of a complex of armyworms, up 5 to 6 per row foot, feeding on soybean seedlings. According to…
The Pigweeds Prone to Escape
May 23, 2017 · No comments
Sound the alarm: The University of Illinois urges growers in the Midwest to rethink their waterhemp and Palmer amaranth management plans. If waterhemp and Palmer amaranth aren’t controlled early in the season, they risk going to seed and passing their herbicide-resistance genes to new generations. Waterhemp has already demonstrated resistance to 6 different herbicide groups. Waterhemp In 2016, the University of Missouri identified a Palmer amaranth population with resistance to both glyphosate and PPO inhibitors....
Three Things to Consider When Replanting Corn
May 22, 2017 · No comments
Wet conditions during corn planting have growers facing a tough decision: replant or hold firm. We recommend growers choosing to replant consider the following: Start clean…again: Ensure the original corn crop is eradicated before replanting. If it’s allowed to emerge after replanting, it will rob water and nutrients from the replanted corn. We recommend shallow tillage, as this will eradicate the first corn crop without burying your pre-emergence herbicide application so deep that it loses...
Mid-Season Tough Weed: Kochia
May 22, 2017 · No comments
All the hard work put into planting can go to waste if the crop faces unchecked competition from tough weeds like kochia. North Dakota State University warns that kochia is extremely competitive and, if left uncontrolled, can result in severe yield loss. At maturity, this weed breaks off at the stem, allowing it to tumble across fields and disperse its seed. One kochia plant can produce as many as 50,000 seeds, so it’s important to...
Early-Season Bean Leaf Beetles Have Arrived
May 18, 2017 · No comments
Caption: Bean leaf beetle In light of the mild winter and wet spring, University of Arkansas extension entomologist Gus Lorenz predicts 2017 will be a “bug year.” Lorenz told Syngenta Pest Patrol that he’s already seen multiple reports of bean leaf beetles in young soybean fields across the Mid-South. One report was from Angus Catchot, extension entomologist at Mississippi State University – he tweeted that bean leaf beetle populations have already reached the economic threshold...
Managing Resistance in Wheat With Multiple Modes of Action
May 17, 2017 · No comments
Caption: Foxtail in a wheat field. There are many factors that result in poor weed control in wheat and barley: a thin crop stand, extreme weather conditions, plugged nozzles, improper application of herbicides, generic formulations, ill-advised tank mix partners or some combination of these factors. The one factor impacting even the most seasoned growers though, is tough, resistant weeds. As weed resistance has spread, many current weed control programs have shown diminished effectiveness, threatening farm...
Protect Corn, Soybean Yields with Post-Emergence Herbicides
May 16, 2017 · No comments
It might not look identical from state to state, town to town or even field to field, but weed pressure is everywhere. Growers can’t afford to let weed competition threaten yield potential – that’s why season-long weed management is essential. What to do? Weeds depend on routine to survive. Growers need to build diversity into their weed management programs to prevent further development of herbicide-resistant weeds. Weed management programs that rely on one herbicide increase the...
Take Frogeye Leaf Spot Seriously this Season
May 12, 2017 · No comments
According to University of Nebraska, frogeye leaf spot (FELS) contributed to an estimated yield loss of 30% across the country last year. It’s primarily an issue in Southern states, but it has been known to impact soybean fields in other regions as well. When scouting for FELS, Purdue University advises growers to inspect leaves for small, yellow spots that can be up to ¼ inch in size. These lesions are gray to brown in the...
Grow More Wheat With Early-season Weed Control
May 11, 2017 · No comments
When weeds compete, wheat yields suffer. Early-season competition from weeds like kochia, wild oat, marestail and Russian thistle reduces moisture and nutrient uptake, limiting grain fill, while late-season pressure offers its own set of unique pitfalls: Heavy infestations of weeds at harvest can slow or even stop combines in their tracks Depending on the species, weeds that go to seed deposit anywhere from a few hundred to one million seeds per plant into the seed...
Top 10 Weed Resistance Management Stewardship Principles
May 11, 2017 · No comments
Dicamba, the new tool in the soybean weed management toolbox, will improve control of certain weed species. But, it won’t revive the days of a post-emergence-only weed control program. Those days are history, and from them, growers have learned an important lesson: Misusing technology will result in an early expiration date. To prolong the efficacy of existing herbicides – like dicamba – for future generations of growers, keep these resistance management principles in mind: Do...
