PPA-1: Chemical Control of Turfgrass Diseases, 2024

Paul Vincelli | Jul. 3, 2024 (Minor Revision)

Turfgrasses under intensive management are often subject to outbreaks of infectious diseases. Diseases usually are most damaging when weather or cultural conditions favor the disease-causing agent but not plant growth and vigor. Cultural conditions that predispose turfgrass to diseases include close mowing, inadequate or excessive fertility, light or frequent irrigation, excessive thatch, poor drainage, and shade.

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PPFS-OR-T-13: Managing Spring Dead Spot in Bermudagrass

Paul Vincelli | Feb. 4, 2021 (Major Revision)

Spring dead spot is the most destructive disease of bermudagrass in Kentucky. The most serious outbreaks occur under high maintenance conditions; e.g., high nitrogen fertility, low mowing height, and frequent traffic. Moderate to severe outbreaks can occur under low-maintenance conditions as well.

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PPFS-OR-T-6: Necrotic Ringspot and Summer Patch in Kentucky Bluegrass Lawns

Paul Vincelli | Sep. 11, 2020 (Minor Revision)

Necrotic ring spot and summer patch are two patch diseases that can be very destructive when Kentucky bluegrass is grown under intensive management. In addition to bluegrass, certain fine-leaved fescues are susceptible.

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PPFS-OR-T-4: Anthracnose in Commercial Turfgrass

Paul Vincelli | Feb. 13, 2020 (Minor Revision)

Anthracnose is primarily a disease of intensely managed turfgrass, such as creeping bentgrass and annual bluegrass, on golf course putting greens. Outbreaks are generally induced by environmental conditions or cultural practices that result in stress to the turf. The anthracnose pathogen can incite a foliar blight phase or the more destructive basal rot phase.

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PPFS-OR-T-12: Brown Patch in Home Lawns and Commercial Turfgrass

Gregg Munshaw, Paul Vincelli | Oct. 21, 2019 (Minor Revision)

Brown patch, also known as Rhizoctonia blight, is a common disease of turfgrass. All cultivated grasses grown in Kentucky can be affected; however, this disease is usually only destructive in tall fescue and perennial ryegrass. Fine fescues (hard fescue, creeping red fescue, chewings fescue, and sheep fescue) are all moderately susceptible to the disease. Occasionally, Kentucky bluegrass lawns can be affected by brown patch, although this grass is less susceptible than others.

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PPFS-OR-T-2: Reducing the Risk of Resistance to Fungicides Used to Control Diseases of Turfgrasses

Paul Vincelli | Jul. 1, 2019 (Minor Revision)

Fungicides can be an important tactic in an overall integrated program for turf disease control. In order to insure that products available today remain available in the future, golf course superintendents should be aware of the need to use fungicides in ways that minimize the risk of fungicide resistance.

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PPFS-OR-T-7: Kentucky Turfgrass Disease Calendar

Paul Vincelli | May. 1, 2019 (Major Revision)

A graphic representation showing the times of year that diseases of cool-season grasses are likely.

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PR-755: 2017 Nursery and Landscape Research Report

Win Dunwell, Bill Fountain, Bob Geneve, Dewayne Ingram, Dan Potter, Raul Villanueva, Paul Vincelli, Nicole Ward Gauthier, Tim Woods | Jan. 18, 2019 (New)

The UK Nursery and Landscape Program coordinates the efforts of faculty, staff, and students in several departments within the College of Agriculture tor the benefit of the Kentucky nursery and landscape industry.

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PPFS-AG-F-10: Possible Causes of Yellowing Alfalfa

Chris Teutsch, Paul Vincelli, Kiersten Wise | Feb. 16, 2018 (New)

During spring, several leaf spotting diseases--including Leptosphaerulina (Lepto) leaf spot and spring black stem/leaf spot--are common in alfalfa. Leaf spotting diseases result in distinct round to elongated spots that sometimes have a dark margin. Very wet weather in spring and early summer favor activity of leaf spotting diseases in first and second cuttings. Wet and humid weather during summer favor other leaf spotting and blighting diseases. All leaf spots and blights weaken plants, but alfalfa often outgrows the damage in later cuttings. Maintain a regular cutting schedule, cutting at 30- to 35-day intervals.

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PPA-47: Genetically Engineered Crops: Emerging Opportunities

Paul Vincelli | Jun. 28, 2017 (Minor Revision)

In certain biotech crops, their genetic material (DNA) has been purposefully manipulated in the laboratory. These genetically engineered crops are often called "GMOs," an acronym for "genetically modified organisms." These GMOs are the focus of this publication.