Jul 31, 2020

Are you seeing an occasional wilted plant out in a soybean field?  Over the last few weeks, mid-season soybean diseases, including Phytophthora began making their entrance into fields within Agtegra territory.  A unique characteristic of Phytophthora is that the disease can potentially kill plants from the time of planting nearly until harvest – mostly, coming in one of the two following stages:
  • SEEDLING STAGE:  Water molds like Pythium and Phytophthora are most prevalent when soybean seeds are planted in an overly wet soil.  These diseases send out mobile spores to infect seedlings causing significant stand losses.   The difference between these Pythium and Phytophthora is their preferred temperature.  Pythium succeeds in cold and wet conditions, where Phytophthora prefers a slightly warmer soil.  Water molds like these can be combatted with seed treatments like CruiserMaxx Vibrance® and by working with your Agtegra Agronomist to select a soybean variety with effective, and possibly multiple Phytophthora resistant genes. 
  • MID-SEASON:  Phytophthora is likely to remain in the warmer soil and possibly infect plants as seed treatments begin to wear off.  Entering through the roots, Phytophthora can work its way up the stem giving the plant a wilted look.  In addition to wilting, a chocolate brown coloration of the lower stem with infection ending in a very clear line between brown and green are key identifying characteristics.
Unfortunately, foliar fungicides are not effective for this mid-season disease.  To best manage mid-season Phytophthora, select soybean varieties with robust genetic packages for resistance genes, high field tolerance ratings and to the extent possible, improve aeration and drainage in soils. 

Read More News

Sep 08, 2023
Jeff Lakner, with his wife Myrna and son Drew, operate Lakner Farms LLC, a diversified grain and livestock farm north of Wessington, South Dakota. Jeff received his Bachelor of Science in Agribusiness from South Dakota State University and has four adult children.
Aug 29, 2023
Huron Innovation Center places emphasis on agricultural education through Mitchell Tech partnership
Jun 21, 2023
Agtegra Cooperative hosted its annual internship kickoff event on Thursday, May 18, at the Dakota Event Center in Aberdeen, South Dakota. The event marked the start of an educational and informative summer for 41 talented interns, representing 12 institutions across South Dakota, North Dakota, Minnesota, Iowa and Indiana.