Verdure: A small dose of manganese for take-all patch July 2020 Does manganese’s purported disease-suppressing ability stand up to scientific scrutiny?
Understanding turf fungicide resistance and FRAC codes June 18, 2020 Brian Aynardi, Ph.D., offers a primer on how resistance develops, which turf pathogens are resistant to which fungicides, and steps superintendents can take to rein in resistance.
Verdure: Pseudo dollar spot control? June 2020 Purdue University researchers designed field experiments to test the impact of the biological control agent Tx-1 on dollar spot and brown patch activity in fairways.
Bermudagrass: Reducing winter injury, spring dead spot March 2020 Joint projects are exploring solutions to winter-related hybrid bermudagrass woes, including the effects of fall mowing height on turf survival and strategies for combating SDS.
Testing for disease in St. Augustinegrass September 2019 The Floratam variety of St. Augustinegrass is extremely susceptible to sugarcane mosaic virus. Researchers worked with growers to ensure disease-free sod.
Verdure: That’s a sappy relationship June 2019 Can different in-field plant measurements — a clipping sap test or handheld reflectance meters — be used assess turf’s foliar nitrogen status to minimize anthracnose?
Pythium root rot Q&A May 23, 2019 Paul Giordano, Ph.D., answers the most frequently asked questions about Pythium root rot to help superintendents outsmart this challenging disease.
Effects of organic amendments on dollar spot May 2019 A two-year trial evaluated the effects of composts and biochar on dollar spot development in a creeping bentgrass fairway.
Microdochium patch management without fungicides May 2019 Oregon State researchers have been evaluating alternatives for Microdochium patch control, including phosphorous acid, sulfur and iron sulfate.
Dollar spot control using iron sulfate and urea May 2019 Researchers discuss findings from the first year of a two-year study on the effects of iron sulfate and urea on dollar spot development.
Spring dead spot: Site-specific management April 2019 Using aerial mapping to enable precise applications of treatments for spring dead spot may cut costs and reduce fungicide use over time.
Dollar spot resistance to SDHI fungicides March 2019 Recent reports of resistance to next-generation SDHI fungicides have prompted a closer look at dollar spot mutations and management strategies.
Irrigation water as a source of Pythium inoculum February 2019 Identifying new point sources of inoculum may expand golf course superintendents’ management options for Pythium diseases.
Plant uptake and optimal timing of snow mold fungicides February 2019 A study from the University of Wisconsin-Madison indicates that the timing of snow mold fungicide applications has a significant impact on fungicide efficacy.
Spring dead spot prevention November 20, 2018 Fall is an ideal time to combat this common disease of bermudagrass. Learn about spring dead spot and options for control.
Dollar spot fungicide resistance November 15, 2018 New research from Penn State looks at the extent of fungicide resistance among dollar spot populations in Pennsylvania and the surrounding region.
Pythium diseases are not all the same November 8, 2018 Distinguish between Pythium root rot and Pythium root dysfunction to optimally address these very different turf diseases.
Dollar spot fungi in golf course thatch October 23, 2018 A recent study shifted the focus from soil to the thatch layer in measuring the presence of disease-causing fungus Sclerotinia homoeocarpa.
Managing mini-ring in ultradwarf bermudagrass October 2018 Turf was treated with urea or ammonium sulfate to measure nitrogen’s impact on the fungal disease.
Verdure: Out, damned (dollar) spot! October 2018 Recent social media chatter prompted a fresh look at a study that put various nitrogen sources’ ability to reduce dollar spot to the test.