Numbered Publications: PPA
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.
PPA-46: Plant Diseases: Kentucky Master Gardener Manual Chapter 5
Nicole Ward Gauthier, Kelly Jackson, Kimberly Leonberger, Robbie Smith | Jan. 16, 2024 (Major Revision)
Anyone who has ever planted a garden knows not only the rewards of beautiful flowers, fruit, and/or vegetables, but also the disappointment when plants become diseased or damaged. Many factors cause plants to exhibit poor vigor, changes in appearance, or even death.
PPA-50: Drone Fungicide Applications in Corn
Ricky Arnett, Pat Hardesty, Nick Roy, Kiersten Wise | Mar. 5, 2021 (New)
Drone technology has improved in recent years and has also become more accessible. In Kentucky, commercial drone fungicide application is now an option in several areas. Drones specifically designed to apply products can potentially be used to apply fungicide in fields that are not accessible to other aircraft. This publication describes experiments to determine if drone fungicide applications can reduce foliar diseases in corn and discusses factors to consider when using drone technology to apply fungicides.
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.
PPA-30: Sampling for the Tall Fescue Endophyte in Pasture or Hay Stands
Ray Smith, Tina Tillery, Paul Vincelli | Apr. 10, 2017 (Minor Revision)
Most of the tall fescue growing in Kentucky is colonized by the tall fescue endophyte, a fungus which causes disorders in livestock that feed on the infected grass. The animal disease syndrome is called fescue toxicosis, which some researchers estimate may cost Kentucky producers over $200 million yearly. This problem can be greatly reduced by identifying the infected fields and replacing them with endophyte-free or novel endophyte tall fescue varieties or by managing them in a way to minimize the impact of the endophyte on herd productivity. One of the simplest ways to reduce toxicity symptoms in cattle is add red and white clover to existing tall fescue stands.
PPA-41: Fundamental Principles of Plant Pathology for Agricultural Producers
Paul Vincelli | Mar. 9, 2015 (Major Revision)
All crop plants produced in Kentucky have the potential to become diseased under certain conditions. Diseases of crops can affect yield and/or quality of the harvested commodity, which can impact profitability and increase the risks of farming. A plant is diseased when it is affected by some agent that interferes with its normal development. Some disorders are caused by noninfectious factors, such as temperature extremes or nutrient deficiencies. However, this publication focuses on diseases caused by infectious microorganisms.
PPA-44: An Alfalfa Disease Calendar
Paul Vincelli | May. 1, 2000 (New)
