Turfgrass Diseases

Mosaic Disease of St. Augustinegrass Caused by Sugarcane Mosaic Virus

Phil Harmon

Take-all Root Rot

M. L. Elliott and P. F. Harmon

This document discusses the root rot disease affecting warm season turfgrasses, caused by the pathogen Gaeumannomyces graminis var. graminis. The disease is triggered by high rainfall and stressed turfgrass, leading to symptoms such as yellow patches and rotted roots. Cultural controls, including proper mowing and balanced nitrogen-potassium applications, are essential for managing the disease. Preventative fungicides can be used but are less effective once symptoms appear. The document emphasizes the importance of stress prevention and provides detailed guidelines for turfgrass management to mitigate the impact of the disease. First published: July 1994.

Rust

M. L. Elliott and P. F. Harmon

Large Patch

M. L. Elliott and P. F. Harmon

This document discusses the occurrence and management of large patch disease in warm-season turfgrasses, particularly St. Augustinegrass and zoysiagrass. It explains the conditions that trigger the disease, symptoms, and signs of infection. The article emphasizes cultural controls, such as nutrient and water management, and chemical controls, including various fungicides. It also highlights the importance of integrating cultural practices with chemical treatments for effective disease management and recovery of turfgrass. First published: May 1991.

Pythium Root Rot

M. L. Elliott and P. F. Harmon

Fairy Rings

M. L. Elliott and P. F. Harmon

Key for Identification of Landscape Turfgrass Diseases

P. F. Harmon and M. L. Elliott

This document provides a key for the preliminary diagnosis of landscape turfgrass diseases, focusing on common issues in Florida. It includes sections on disease identification, pathogen details, affected turfgrasses, occurrence timing, symptoms, cultural controls, and chemical treatments. The key helps narrow down potential disease problems and offers links to more specific diagnostic resources. For unresolved issues, consulting local extension offices or submitting samples to diagnostic clinics is recommended. First published: July 1991.

Helminthosporium Leaf Spot

M. L. Elliott and P. F. Harmon

Homeowner's Guide to Fungicides for Lawn and Landscape Disease Management

Philip Harmon and Aaron Palmateer

Turfgrass Disease Management

M. L. Elliott and P. F. Harmon