Since bentgrass greens in desert golf courses are vulnerable to injury from black turfgrass ataenius (BTA) beetles (Ataenius spretulus), UCR entomologists have determined when damaging populations are likely to be present and have identified an economic injury level superintendents can use to implement control measures. “The threshold levels for damaging populations of BTA on bentgrass in the l...

Bermudagrass is often overseeded with a cool-season grass species in the fall to provide a green surface during cool weather. Recently, two new turfgrass species, meadow fescue and tetraploid ryegrass, have shown promise for use in overseeding situations. The objective of this study was to determine the performance of herbicides commonly used to remove (transition) perennial ryegrass from an ov...

The demand for salinity-tolerant turfgrasses is increasing due to augmented use of effluent or low-quality water (sea water) for turf irrigation and the growing turfgrass industry in coastal areas. Experimental plants, grown in plastic pots filled with a mixture of river sand and KOSAS(R) peat (9 : 1), were irrigated with sea water at different dilutions imparting salinity levels of 0, 8, 16, 2...

Golf course putting greens may be affected by various turfgrass pests. Fungicide applications are often necessary on either a preventive or curative basis and may target more than one disease. The initial objective of this trial was to assess the ability of various fungicides to provide curative suppression of Type II fairy ring symptoms on a creeping bentgrass (Agrostis stolonifera) putting gr...

Abstract The ascomycete fungus Microdochium nivale is one of the most damaging pathogens cool season turfgrass. Prevention and recovery from infection costly to many sports facilities each year. In recent years, use chemical plant protectants has been restricted turfgrass managers have increasingly sought alternative measures for disease control. phosphite shown be effective in reducing M. symp...

When a thatch layer accumulates on turfgrass it can be detrimental to the stand. A field experiment was initiated investigate aerification treatments and their influence (organic matter level), quality, color of ‘Innovation’ zoysiagrass that sodded within past year. Turfgrass intensely aerified had less organic content in surface inch profile compared not aerified. Color also enhanced receiving...

Superintendents know that management of putting greens is an art. Greens are often made of high-porosity sand that does not retain water or nutrients very effectively. Also, putting green grasses are cut extremely short, which does not allow a deep root system to develop and take up nutrients from deep in the soil profile. Therefore, putting greens require frequent irrigation and fertilizer app...

A well maintained turfgrass area provides many aesthetic and functional benefits. Decades of scientific research has been conducted to help managers maximize plant health and minimize environmental impact. Still, significant concern for environmental quality and human health has raised public awareness and led to increased scrutiny of management practices, especially pest management. For many y...

In order to determine aqueous extract effects of cool-season turfgrass mixture clipping on germination and seedling growth of four weed species, laboratory and outdoor pot experiments were done at the experimental laboratory and greenhouse of the Doroud Parks and Landscape Organization, located in Doroud, Lorestan, Iran. The first factor was the concentration of sport turfgrass clipping extract...