Lawn Insects
Choose Appropriate Varieties. There are a number of grasses available for planting in California. These grasses are often referred to as either cool-season grasses (examples include annual ryegrass, bentgrass, fine ... [... more]
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And Management
Turfgrasses vary in water requirements. Warm-season turfgrasses (bermudagrass, zoysiagrass, and St. Augustinegrass) are more drought resistant than cool-season grasses (tall fescue, perennial ryegrass, Kentucky ... [... more]
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Turfgrass,
UC Guide to Healthy Lawns--Comprehensive, interactive source for all lawn management information ... [... more]
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Nematodes
In established turf, randomly take several soil cores (1 to 2 inches in diameter) or a cup cutter core to a depth of 4 to 6 inches, from each area of suspected nematode infestation. To allow comparison you may take ... [... more]
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Necrotic Ring Spot
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 appear to have drought stress and can ... [... more]
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Seed Rot And Damping Off
Before planting a site with turfgrass, make sure the soil is adequately aerated and there is good drainage. Sow fresh, healthy seed at recommended rates and seasons. Do not seed cool-season turfgrass during hot ... [... more]
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Powdery Mildew
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 ... [... more]
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Herbicide Treatment Table
COMMENTS: Apply in 175-200 gal water/acre. Effective for crabgrass, dallisgrass, and nutsedge control. Temperature, soil moisture, and turf type determine degree of turf selectivity. Avoid spraying under hot, ... [... more]
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Take-All Patch
In California, take-all patch principally occurs in late fall and winter when air temperatures are 50° to 60°F and soils are wet or moist, but symptoms may not manifest until the turf is exposed to periods of drought ... [... more]
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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 ... [... more]
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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, ... [... more]
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Red Thread
This disease occurs most frequently along the coast of northern and central California but may be found in southern California on rare occasions. The disease is common under conditions of mild air temperatures (60° ... [... more]
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