WebCenter for Agriculture, Food, and the Environment. Integrating research and outreach education from UMass Amherst WebPyricularia grisea. Gray Leaf Spot is a lawn disease that can quickly turn destructive. It occurs in most areas of the eastern United States where Perennial Ryegrass is grown, …

Gray Leaf Spot in Turf - North Carolina State University

WebGray leaf spot, known as Pyricularia grisea, is an ascomycete fungus that is known only by its anamorph form. The teleomorph phase (perfect sexual phase) has not been observed in turf but is predicted to use perithecium as the ascocarp structure to form ascospores. This form of the pathogen is known as Magnaporthe grisea. WebDollar Spot 32–64 mL 32–64 mL 140–200 mL Foliar Anthracnose 32–64 mL 32–64 mL 200 mL, 140 mL suppression 60–180 g 3.8 g Basal Rot Anthracnose 32–64 mL 32–64 mL 200 mL 60–180 g 4.6 g Microdochium Patch (Fusarium) 32–64 mL 3.8 g Leaf Spot 32–64 mL 140–200 mL 3.1 g Pythium Blight 60–180 g 64 mL Pythium Root Rot 60–180 g goopy performance rotary

Turfgrass Diseases: Quick Reference Guide - UGA

WebAug 15, 2005 · Gray Leaf Spot Causal agent Pyricularia grisea Susceptible turfgrasses Wide host range. However is of primary importance on St. Augustinegrass and perennial … WebHowever, keep in mind that this warm-season turfgrass can struggle with the Tallahassee rain, especially in shaded yards. St. Augustinegrass is prone to fungus, like gray leaf spot, if it does not dry out in between watering sessions. The quick-growing turfgrass has a dense appearance, coarse texture, and blue-green color. WebLeaf spot can be controlled on a preventative or curative basis. However, applications are most effective when made in the early stages of development. Once the disease reaches the melting out stage, fungicide … goor accountancy