August is likely one of the closing hurdles to reap. Excessive temperatures and low rainfall usually stress crops, which opens the door to a bunch of different issues.
Drought-stressed crops are particularly weak to late-season bugs that rob yields and maintain bushels from the bin. If late-summer brings robust rising circumstances, be careful for these 3 pests in the course of the closing weeks of summer time.
Aphids are particularly problematic earlier than and through tasseling, however post-pollination aphids are a comparatively new difficulty. If aphids colonize late summer time throughout drought circumstances, careworn vegetation may be delicate to aphid feeding.
Farmers ought to proceed scouting for aphids all through the summer time — paying explicit consideration to tassels, the place they may discover aphids and their honeydew.
Jason Steffl, space product supervisor for Brevant™ seeds, stated aphids can also trigger main issues for soybeans later in the summertime, when vegetation are placing on beans, particularly in his territory: Minnesota, Iowa and the Dakotas.
“August is a critical time for soybeans — we’re talking about pod set and first fill,” Steffl stated. “Those plants are demanding a lot of nitrogen, nutrients and water, because that’s their time to shine. It’s all about putting seeds in the pod and filling out that size to increase weight per acre.”
Steffl encourages farmers to observe Extension thresholds and suggestions for aphid management, and he stated they need to all the time weigh components similar to crop potential, climate forecasts and insecticide return on funding.
Mid-to-late summer time is a perfect time to guage corn rootworm populations in your farm. If vegetation present extra stress than anticipated throughout drought circumstances, dig roots to find out if corn rootworm larvae have compromised root techniques.
Grownup corn rootworm beetles are energetic in late summer time, feeding and laying eggs to overwinter. Scout fields recurrently to find out beetle exercise. Yellow sticky traps are straightforward to make use of, and ag retailers can present particular suggestions. Native Extension or retailers will usually arrange sticky traps, so you’ll want to ask if there are any native beetle counts close to your farm.
If scouting reveals corn rootworm infestation, farmers ought to select hybrids subsequent season with rootworm safety, similar to Brevant™ model Qrome® merchandise. Qrome contains a proprietary molecular-stack expertise with twin modes of motion to defend towards above- and below-ground pests, with superior safety towards corn rootworm. These Brevant model hybrids convey next-generation insect safety and genetics, with a yield benefit of seven.8 bu./A vs. all trait packages from rivals.1
“Performance wise, growers have been happy with these new hybrids with Qrome,” Steffl stated. “The technology and trait have been great, and we’ve seen impressive yield.”
Spider mites won’t be a perennial pest in your geography, however Steffl stated they’re a possible drawback farmers have to carry on their radar. In 2020, spider mites infested very dry fields in northwestern Iowa, and this season might be the same scenario.
“Some fields had spider mites last year, so they are watching for it diligently this year,” Steffl stated. “Many situations didn’t warrant applications in 2020, but this is one more insect that we need to watch for this summer. I don’t want to sound an alarm that it will happen, but it could — and spider mites can wreak a lot of havoc.”
Handle spider mites with an insecticide program really helpful by your native ag retailer. Along with insecticide purposes, schedule common irrigations the place obtainable. Spider mites thrive in dry circumstances, so use well timed irrigations to create humid microenvironments.
“Keep an eye out for all of the stresses this crop could go through before harvest,” Steffl stated. “We can’t control the weather, but we can mitigate other variables that take yield down.”
For extra recommendation on corn and soybean administration, join along with your native ag retailer. Yow will discover your retailer for Brevant seeds at Brevant.com/Retail.
1 Brevant multi-year, on-farm pre-commercial head-to-head comparisons and threerd get together trials. Primarily based on 25,886 comparisons inside 2 days of relative maturity.
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