Search
Statewide Evaluation of Foliar Fungicides on Soybeans in 2021
Foliar fungicides were evaluated across seven Iowa State University research and demonstration farms to determine their performance for disease and yield response on soybean in 2021.
ISU Virtual Field Day Series is now available on YouTube
ISU Extension and Outreach and the College of Agriculture and Life Sciences recently hosted a “five-stop” virtual field day series. This series featured a greeting by Dean Dan Robison, an administrative update on the farms, and four consecutive days featuring water quality research, fungicide trials, a long-term tillage trial and phosphorous and potassium placement trials for crop production.
Crop Protection Network releases 2020 fungicide efficacy tables
The Crop Protection Network (CPN) has published its 2020 fungicide efficacy tables for foliar diseases of corn and soybean, and for seedling diseases of soybean. These three publications can be found at the CPN website, under resources and publications.
Foliar Fungicide Decisions for Late-Planted Crops
A new article recently released through the Crop Protection Network (CPN) discusses how to make fungicide decisions in corn and soybean, given the delayed planting scenarios across the Midwest. The article takes into account yield potential at various planting times throughout the North Central region, as well as the previous wet and cool conditions when evaluating for a positive return on investment, in 2019. Also considered in the article is the potential damage that frost can do to overall yield, which also impact your return on investment.
Pesticide label references available online!
This cold and snowy weather hopefully has everyone dreaming of warmer days this spring. The 2019 growing season will be here before we know it, but now is a great time to plan for the year. While many farmers have already purchased pesticides for the growing season, it’s important to read the labels for these products before use. I always suggest that farmers read pesticide labels prior to purchase, in case there are restrictions or label requirements that would make an alternative product more desirable to use.
Evaluation of Foliar Fungicides on Soybeans in 2018
Soybean foliar fungicides were evaluated for foliar disease management and yield response across seven Iowa State University research and demonstration farms in 2018. These included the Northwest Research and Demonstration Farm (Sutherland), Northern Research and Demonstration Farm (Kanawha), Northeast Research and Demonstration Farm (Nashua), Central Iowa Research Farms (Ames), Armstrong Memorial Research and Demonstration Farm (Lewis), McNay Memorial Research and Demonstration Farm (Chariton), and Southeast Research and Demonstration Farm (Crawfordsville).
Summary of Foliar Fungicide Applications on Corn in Iowa in 2018
In 2018, we tested various foliar fungicides on corn at six locations in Iowa: ISU Northwest Research and Demonstration Farm (NWRF), Sutherland; Northeast Research and Demonstration Farm (NERF), Nashua; Northern Research and Demonstration Farm (NRF), Kanawha; Southwest Research and Demonstration Farm (SWRF), Lewis; Southeast Research and Demonstration Farm (SERF), Crawfordsville; and the Ag engineering and Agronomy Farm near Boone.
Sporebuster, a White Mold Fungicide Value Calculator
The follow-up to this summer's 'Sporecaster' smartphone application, designed to help farmers predict the need for a fungicide application to control white mold in soybean, is now available for download.
While Sporecaster can help farmers evaluate their risk for white mold using infection data integrated with weather patterns, whether or not to apply a fungicide can pose and economical dilemma for farmers that they might not be able to evaluate on their own.
Would a fungicide benefit hail-damaged crops?
Widespread hail occurred in Iowa on 6 June 2018, causing damage to many acres of corn and soybean plants. At this time, most of the corn is in the V6 to V8 growth stages, while soybeans are at the V1 to V3 growth stages. Some areas of the state also received hail injury earlier this season. Questions have been raised regarding the benefit of a fungicide application to hail-damaged crops in these early to mid vegetative stages.