Lawn Insect Management Guidelines
UC home and landscape guidelines for control of Lawn Insects. Insects are not a common cause of residential lawn damage in California, but certain species occasionally damage or kill turfgrass. Insect feeding can cause grass to turn yellow or ... [... more]
University of California IPM |
Lawn Diseases: Prevention and Management Guidelines
UC home and landscape guidelines Lawn Diseases: Prevention and Management. Maintaining a healthy, vigorously growing lawn is the best way to prevent a severe disease outbreak in a turfgrass. A 5,000 square foot lawn contains about four million ... [... more]
University of California IPM |
Turfgrass Pest Management Guidelines for Professionals
UC agricultural management guidelines for control of turfgrass pests by professional turf managers. Turfgrass Weed Photo Gallery, with Common and Scientific Names (6/03) UC Guide to Healthy Lawns-Comprehensive, interactive source for all lawn ... [... more]
University of California IPM |
Lesion nematode: Pratylenchus sp.
Several genera of nematodes may be associated with turfgrasses in California. Statewide, root knot nematode is thought to be the most widespread and most damaging. Of the root knot species, Meloidogyne naasi in particular prefers grasses over ... [... more]
University of California IPM |
Necrotic Ring Spot
UC Management Guidelines for Necrotic Ring Spot on Turfgrass. Necrotic ring spot appears as large, ring-shaped patches that often cause depressions in the turf. Rings may vary from a few inches to several feet in diameter. Individual plants ... [... more]
University of California IPM |
Seed Rot and Damping Off
UC Management Guidelines for Seed Rot and Damping Off on Turfgrass. Seeds affected by seed rot are rather dry and do not germinate. Damping off may affect seedlings at either the pre- or postemergence stage. The hypocotyl area of seedlings is ... [... more]
University of California IPM |
Pathogen: Erysiphe graminis
Powdery mildew causes grayish white, powdery growth to develop on the leaf surfaces. It begins in isolated patches before spreading over larger areas. In advanced stages of the disease, the leaf blades may turn pale yellow. The fungus survives as ... [... more]
University of California IPM |
UC IPM: Information about Herbicides in Turfgrass
COMMENTS: Soil-applied fumigant for control of annual weeds. Apply directly to the soil and mix 6 inches deep with a power tiller. Activity is better if irrigated after tilling in. Better on sandy soils than on clay soils. Seed in 3 weeks if ... [... more]
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Take-All Patch
Take-all patch appears as circular or ring-shaped dead areas that range from a few inches up to 3 feet or more in diameter. Dying bentgrass at the advancing margins of these areas has a purplish tinge. The roots of the diseased plants are rotted ... [... more]
University of California IPM |
Fusarium Blight
Fusarium blight first appears as small, circular, grayish green areas, ranging from a few inches up to a foot in diameter. Some plants in the center of the circles may survive, giving them a frog eye or donut appearance. The crown or basal area ... [... more]
University of California IPM |
Pythium Root Rot
Pythium root rot causes poor growth as a result of rotten roots. Small, bleached patches develop in the turf that may progress to large dead areas. Affected roots of plants can appear necrotic, or seemingly normal, although incubation under ... [... more]
University of California IPM |
Red Thread
Red thread may kill turfgrass in patches that are 2 to 8 inches in diameter, or the disease may occur over large areas without killing the plants. A pink web of fungal threads binds the leaves together. Look for pink, gelatinous fungal crusts ... [... more]
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