Is Your Lawn Dying? Detect Diseases Now

McCain: Ophiosphaerella korrae: bermudagrass, Seashore paspalum, zoysiagrass: circular locations of dead lawn 612 inches in diameter appear in spring when growth resumes; spots may coalesce to form big areas; normally impacts turfgrass more than 2 years of ages: affects inactive plants; most extreme when soil temperatures are < 65F; endures as sclerotia and in infected roots and stolons: remove dead grass; fertilize in summer to maintain vitality; do not overfertilize in late summertime; water appropriate length of time: fungicides offered but mainly prevented by cultural practices in California Summer patch in turfgrass, brought on by Magnaporthe poae.

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Nelson: Magnaporthe poae: bluegrasses, fine fescues: circular, yellow or tan locations of dead and passing away plants approximately 1 foot in diameter; can have green, apparently healthy plants in center; roots, crowns, and stolons have dark brown fungal hyphae on them; vascular discoloration and cortical rot take place in later phases: high temperatures (> 85) in late spring through the summer; most extreme when turf is trimmed low or when soil moisture is extreme: aerate soil and apply slow-release nitrogen; improve drainage; decrease compaction; water proper length of time; do not trim too low; control thatch; decrease soil pH if higher than 7: systemic fungicides in fall normally necessary when illness has actually been extreme For currently registered fungicides, see Pest Management Standards: Turfgrass.

There is nobody perfect turfgrass suitable for all lawns. The kind of grass you choose for your lawn needs to work with your environment, anticipated use and maintenance level, and visual desires; it likewise needs to have some resistance to typical illness. Cool-season grasses (e.g., bluegrasses, fescues, ryegrasses, etc) perform best at daytime temperature levels between 70 to 85F.

Typically, diseases most effect lawns when they aren't intensely growing. Cool-season grass is more prone to illness invasions throughout the summer season, while warm-season lawns are more susceptible to diseases in late fall through early spring.

Likewise, some species are more heat- or drought-tolerant than others. New and enhanced cultivars of lawn yards using higher illness resistance, color, texture, density, and uniformity have been established the previous numerous years. Contact a trustworthy nursery or the UC Cooperative Extension office in your county for particular recommendations. Likewise see the publication Turfgrass Choice for the Home Landscape listed in References.

Comprehensive Disease and Fungus Control Solutions

Much of California has a Mediterranean environment characterized by rainfall in winter and spring and very little rain during summertime and fall. Throughout the state, lawns need watering.

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Applying excessive or not sufficient water can lead to unhealthy, slow-growing lawn that is susceptible to pathogens. Waterlogged soils are badly aerated, which restricts root development, promotes some diseases, and permits algae and moss to prosper. In general, a deeply watered yard develops a deeper and more extensive vertical root system, which offers it with greater drought and disease resistance than a shallowly watered yard.

Warm-season turfgrasses are more drought-resistant than cool-season grasses and require about 20% less water. See Table 2 for info on the number of minutes to water warm- and cool-season lawns each week in numerous parts of California, based on the output of the irrigation system or hose-end sprinkler. It is best to water the yard thoroughly at longer periods, until overflow just begins, rather than watering a little every day.

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Proven Ways to Get Rid of Lawn Weeds

For example, if a yard requires 40 minutes of watering weekly however overflow starts after 20 minutes, water twice a week for 20 minutes. In cases where soil takes up water so slowly that overflow takes place before 10 minutes, water biking is necessary. To cycle, irrigate till runoff simply begins, turn the system off, and repeat the procedure in 30 minutes before the soil surface dries.

To figure out sprinkler output, conduct "catch can tests" by setting small, empty, straight-sided, equal-sized containers such as tuna or feline food cans on top of your yard every 10 to 15 feet between sprinkler heads run by the exact same valve (Fig. 2) and run the system for 15 minutes. After 15 minutes, switch off the system and measure the quantity of water in each can with a ruler to figure out the average amount of water per can.