“Seedling diseases have been especially challenging this year,” says Andrew Hoffman, Mycogen Seeds agronomy marketing manager. “The effects of Pythium and Rhizoctonia are still evident in farmers’ fields with less-than-ideal, irregular stands.”
With REVONTEK, farmers now have a solution to push past the window of early season diseases like Pythium and Rhizoctonia.
The seedling disease battle
As farmers manage more and more acres, it is increasingly difficult to hit a specific planting window for all fields. It’s often impossible for farmers to cover all their acres during ideal planting conditions.
“We advise growers to keep an eye on the weather,” says Alison Robertson, Ph.D., Iowa State University Extension pathologist. “If a cold front is predicted, they may want to hold off on planting.”
Robertson says farmers don’t often like this advice, but it’s certainly a key factor in avoiding seedling diseases. This year, farmers across the Corn Belt facedPythium issues. This pathogen attacks seedlings and prevents corn from emerging, kills the new plants shortly following emergence or reduces seedling vigor.
“We’ve learned that corn is most susceptible to seedling disease if cold stress occurs two to four days after planting,” Robertson explains. “We found that you can plant into warm soils and seeds will absorb water, but if you get cold, wet soils 48 to 96 hours later, the seed stops growing.”
Once the seed stops growing, it begins to leak carbohydrates and amino acids, allowing nearby disease pathogens such as Pythium to invade. Robertson is conducting a three-year study in cooperation with farmers to determine whichPythium species are the most troublesome. She specifically looks at how residue and cover crops affect Pythium.
“Depending on the crop and soil temperature, we are going to see different species of Pythium,” Robertson says. “If we can understand how these species affect corn seedlings, we can come up with tailored management practices.”
Aside from waiting until Mother Nature cooperates, Robertson tells growers to consider using row cleaners to move corn and crop residue aside, crop rotation and an effective seed treatment.
Protect seed investments
“REVONTEK seed treatment has a biologic protein which enhances root growth as well as a strong insecticide component to protect against early season pests,” Hoffman says. “As farmers know, strong, healthy roots and early-season protection can help push a crop through the growing season and into harvest.”
REVONTEK will be offered to farmers of Mycogen brand corn as part of the company’s standard corn seed treatment. The seed treatment comes with a polymer coating, which provides a protective layer for an even, durable coating.
For more information on REVONTEK™ seed treatment, contact your local Mycogen Seeds sales representative, commercial agronomist or dealer. To learn more about Mycogen, visit Mycogen.com.
Alison Robertson, Ph.D., Iowa State University Extension pathologist, shares key takeaways from her three-year study on Pythium:
About Mycogen Seeds
Mycogen Seeds offers leading genetics in corn, soybeans, silage corn, sunflowers and canola. A seed company of Dow AgroSciences LLC, Mycogen Seeds maintains a robust global research and development program to bring farmers high-performance genetics with the latest trait technologies. Mycogen Seeds is committed to helping farmers be better acre after acre with dependable seed, smart ideas and hard work. For more information about Mycogen® brand products, visit Mycogen.com or follow Mycogen Seeds on Facebook, Twitter and YouTube.
About Dow AgroSciences
Dow AgroSciences discovers, develops, and brings to market crop protection and plant biotechnology solutions for the growing world. Based in Indianapolis, Indiana, USA, Dow AgroSciences is a wholly owned subsidiary of The Dow Chemical Company and had annual global sales of $6.2 billion in 2016. Learn more at www.dowagro.com. Follow Dow AgroSciences on Facebook, Twitter, LinkedIn, and Google+, or subscribe to our News Release RSS Feed.