Filtering by tag: Plant Pathology

US map showing 2025 turfgrass sample origins; 71% SE, 41% NC, 13% SW; Top5 NC, FL, SC, TX, CA

2025 Turf Diagnostics Lab Review

Overall, total turfgrass samples submitted in 2025 to the NC State Turf Diagnostics Lab were 6% higher than samples submitted in 2024 and 13% above our 18-year running average (2008-2025). As…

US map: 2024 turfgrass sample origins — 65% SE, 15% SW, 37% NC; Top 5: NC, FL, TX, CA, AL

2024 Turf Diagnostics Lab Review

Overall, total turfgrass samples submitted in 2024 to the NC State Turf Diagnostics Lab were 6% lower than samples submitted in 2023 and 7% above our 15-year running average. As expected, most (74%)…

Cardboard box labeled "Turf Diagnosis Sample Please Rush" in black marker

Turfgrass Disease Diagnosis: A Bit of Science and a Lot of Art

Turfgrass disease diagnosis is challenging. Despite what many in the general public and maybe even within the industry think, turfgrass systems are not sterile environments. Many researchers have…

The chart titled "Curative Suppression of Dollar Spot with Fungicides" from NC State University displays the percentage of dollar spot per plot over time, from May 13 to May 31. It compares six treatments: Secure, Maxima, Posterity, Daconil Ultrex, Chipco

What Is a Fungicide? That Is the Question!

I love the saying that Spring comes in like a lion and leaves like a lamb. It says we have no earthly idea what Spring holds for us. But by the end of Spring, all will be okay unless summer shows up…

2023 Client Distribution bar chart: Golf 67%, Lawn 30%, Orn. Nursery 3% (% of all turf samples)

2023 Turf Diagnostics Lab Review

Overall, total turfgrass samples submitted in 2023 to the NC State Turf Diagnostics Lab were 11% higher than samples submitted in 2022 and 14% above our 15-year running average. As expected, the…

EPA logo and text: United States Environmental Protection Agency on blue background

Proposed Interim Decision for Chlorothalonil and Implications in Turfgrass Systems

The U.S. Environmental Protection Agency (EPA) released its Proposed Interim Registration Review Decision for chlorothalonil (Registration Review Case #0097) on November 9, 2023, which contains major…

Red turf coring tool standing upright on green turf surface

Purple Spots on Your Ultradwarf Bermudagrass Putting Greens?

Purple haze all on my bermudagrass putting greens. Lately, this turf just don’t seem the same. Actin’ funny like Pythium blight but I don’t know why. ‘Scuse me while I scream at the sky! Help me!…

Golf putting green showing multiple circular brown turf damage patches

Why Should You Love Soil Temperatures When Managing Bermudagrass Diseases?

As the summer is coming to a close, except for 100oF temperatures in September, we are in the window to manage those important diseases of ultradwarf bermudagrass putting greens. Spring dead spot…

North Carolina county map with red and gray counties; title "2013-22 Creeping Bentgrass Submission Origin"

North Carolina Putting Green Samples - 10 Year Review

The following post is a 10-year review (2013-2022) of turfgrass samples submitted to our lab from golf course putting greens solely in North Carolina. North Carolina is located in the transition zone…

Map of 2022 turfgrass sample origins by US state; 44% NC, 68% SE (TN/NC/MS/AL/GA/SC/FL)

2022 Turf Diagnostics Lab Review

Overall, total turfgrass samples submitted in 2022 to the NC State Turf Diagnostics Lab were higher (+16%) than samples submitted in 2021, which brings us back to a normal year since it was very…