Mower Sharpness and Creeping Bentgrass Quality of Cut

Regular mower maintenance is essential to achieve the best possible quality of cut. Dull mowers tear leaf tissue, severely wounding the plant and resulting in formation of frayed and necrotic leaf tips. Severe wounding may limit growth and development of grasses and increase susceptibility to stresses such as drought, pathogens, insects, and traffic. The objective of this study was to quantify mower sharpness and mowing injury over time. This information will be used to develop general mower maintenance guidelines and to determine how frequently reel-type mowers should be sharpened to achieve the best possible quality of cut

Turf-type Tall Fescue Cultivar Study

The National Turfgrass Evaluation Program (NTEP) conducts trials throughout the United States on turfgrass adaptation. This trial was established in September 2012 as a part of the NTEP program. Data will be collected over the next five years. This was the first year data was collected on this trial. It contained 16 turf-type tall fescue cultivars

Phytotoxicity Test of Amino Acid Complex on T-1 Creeping Bentgrass

The objective was to determine if the given products (Table 1) are phytotoxic to turfgrass

Mesotrione Safety at Seeding of Kentucky Bluegrass and Perennial Ryegrass

The objectives of the 2007 Mesotrione Safety at Seeding study were to determine if mesotrione was safe to turf when applied at the time of seeding and if mesotrione was safe when applied after the first mowing of the seeded turf. The secondary objective was to determine the efficacy of weed control by the various treatments

Evaluation of Solitare for Postemergence Crabgrass Control

The objective of this study was to evaluate postemergence crabgrass controls in Kentucky bluegrass turf

Light Regulates the RUBylation Levels of Individual Cullin Proteins in Arabidopsis thaliana

In plants, the small protein related to ubiquitin (RUB) modifies cullin (CUL) proteins in ubiquitin E3 ligases to allow for efficient transfer of ubiquitin to substrate proteins for degradation by the 26S proteasome. At the molecular level, the conjugation of RUB to individual CUL proteins is transient in nature, which aids in the stability of the cullins and adaptor proteins. Many changes in cellular processes occur within the plant upon exposure to light, including well-documented changes in the stability of individual proteins. However, overall activity of E3 ligases between dark- and light-grown seedlings has not been assessed in plants. In order to understand more about the activity of the protein degradation pathway, overall levels of RUB-modified CULs were measured in Arabidopsis thaliana seedlings growing in different light conditions. We found that light influenced the global levels of RUBylation on CULs, but not uniformly. Blue light had little effect on both Cul1 and Cul3 RUBylation levels. However, red light directed the increase in Cul3 RUBylation levels, but not Cul1. This red-light regulation of Cul3 was at least partially dependent on the activation of the phytochrome B signaling pathway. The results indicate that the RUBylation levels on individual CULs change in response to different light conditions, which enable plants to fine-tune their growth and development to the various light environments

Perennial Ryegrass Cultivar Study

The National Turfgrass Evaluation Program (NTEP) conducts trials throughout the United States on turfgrass adaptation. This trial was established in September 2010 as a part of the NTEP program. It contains 88 perennial ryegrass cultivars