In 2010, disease symptoms, including necrotic lesions on stems and leaves with circular yellow-brown or irregular brown color patches, were observed on cool-season turfgrass at golf courses (OHCC) and the Daegu University research farm in Gyeongbuk, Korea. We isolated the causal agent and identified it as Waitea circinata var. zeae by morphological characterization and molecular analysis. To th...

The National Turfgrass Evaluation Program (NTEP) Zoysia Test was planted in 2019 at the Kansas State University Olathe Horticulture Center, Olathe, KS. Since planting, three experimental genotypes developed K-State (with cooperators noted below) have outperformed ‘Meyer’ establishment rate, turf quality, drought tolerance, and fall color. Earlier research has demonstrated large patch tolerance ...

T under intensive management are often subject to outbreaks of infectious diseases. Diseases usually are most damaging when weather or cultural conditions favor the disease-causing agent but not plant growth and vigor. Cultural conditions that enhance turfgrass diseases include close mowing, inadequate or excessive nitrogen fertility, light and frequent irrigations, excessive thatch, poor drain...

Previous research involving turfgrass response to soil moisture used methodology that may compromise root morphology or fail control outside environmental factors. Water-table depth gradient tanks were employed in the greenhouse identify habitat specialization of hybrid bermudagrass [ Cynodon dactylon (L.) Pers. × C. transvaalensis Burtt-Davy] and manilagrass Zoysia matrella Merr.] maintained a...

Land and water resources are becoming scarce and are insufficient to sustain the burgeoning population. Salinity is one of the most important abiotic stresses affecting agricultural productions across the world. Cultivation of salt-tolerant turfgrass species may be promising option under such conditions where poor quality water can also be used for these crops. Coastal lands in developing count...

Lawns achieve environmental, functional, and aesthetical roles in urban environments. The objectives of this research were to assess the effect different salinity levels on Trichoderma isolates study spp. perennial ryegrass under salinity. T. harzianum (ThLem2017-01) atroviride (TaDP2019-01) had a higher mycelium growth rate than (TaDP2019-02) when low. In contrast, isolate at high superior res...

To investigate the response of nine turfgrass species exposed to increasing rates of glyphosate application, the dry matter production, visual leaf injury symptoms (e.g., chlorosis and necrosis) and the concentrations of shikimate and mineral nutrients were determined in shoots. The rates of foliar glyphosate application were 0%, 5% (1.58 mM), and 20% (6.32 mM) of the recommended application ra...

The National Turfgrass Evaluation Program (NTEP) Zoysia Test was planted in 2019 at the Kansas State University Olathe Horticulture Center, Olathe, KS. Since planting, three experimental genotypes developed (with cooperators noted below) have outperformed ‘Meyer’ establishment rate, turf quality, drought tolerance, and fall color. Earlier research has demonstrated large patch tolerance all geno...

Drought and heat stresses are major challenges for turfgrass management in the desert southwest of United States where rainfall is insufficient to support managed growth. Irrigation water availability its quality increasingly strained due diminishing surface supplies. Unprecedented drought conditions threaten reliance on groundwater supplies that heavily scrutinized irrigation practices landsca...