The effect of Trinexapac Ethyl and three Nitrogen sources on creeping bentgrass (Agrostis stolonifera) grown under three light environments
Chlorophyll content, along with non-structural carbohydrates, flavonoids, turf canopy color, dry matter and canopy densities were measured. There were no differences in soluble carbohydrate levels between treatments. Chlorophyll levels varied between TE treated and non-treated areas. Applications of (NH2)2CO consistently resulted in higher content of N15 in turfgrass plants also but there was no effect in nitrogen uptake kinetics due to light environment differences. TE had a negative impact on quantities of flavonoids. There was variation between the N treatments in relation to dry matter and carbohydrate content. (NH2)2CO in combination with TE provided the best visual quality surface as the season progressed. TE was effective in reduced PPF conditions and R:FR conditions which would indicate it as a possible product for use in shade management of creeping bentgrass Agrostis stolonifera. It was equally efficient in both light environments suggesting that prior shade research using NS is relevant to shade management in private industry. There was not a strong indication as to a preferred source of N.(NH2)2CO had positive impacts on total chlorophyll content.
School:The Ohio State University
School Location:USA - Ohio
Source Type:Master's Thesis
Keywords:trinexapac ethyl foliar application nitrogen source reduced red far ratio creeping bentgrass neutral density shade deciduous chlorophyll soluble carbohydrates flavonoids
Date of Publication:01/01/2008