Full TGIF Record # 157282
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Author(s):Baldwin, Christian M.; Liu, Haibo; McCarty, Lambert B; Luo, Hong; Toler, Joe E.
Author Affiliation:Baldwin:Jacklin Seed by Simplot, Post Falls, Idaho; Liu and McCarty: Department of Horticulture; Luo: Department of Genetics and Biochemistry; Toler: Department of Applied Economics and Statistics, Clemson University, Clemson, South Carolina
Title:'L-93' creeping bentgrass putting green responses to various winter light intensities in the southern transition zone
Section:Turf management
Other records with the "Turf management" Section
Source:HortScience. Vol. 44, No. 6, October 2009, p. 1751-1756.
# of Pages:6
Publishing Information:Alexandria, VA: American Society for Horticultural Science
Keywords:TIC Keywords: Agrostis stolonifera; Chlorophyll content; Golf greens; Light intensity; Quality evaluation; Root weight; Seasonal variation; Shade stress; Transition zone; Trinexapac-ethyl; Winter
Abstract/Contents:"Seasonal variations in temperature and solar radiation in the warm climatic region of the transition zone increase difficulty of creeping bentgrass [Agrostis stolonifera var. palustris (Huds.)] management throughout the year. The impact of winter shade on bentgrass quality and subsequent residual effects of winter shade in spring and summer months has not been investigated. Therefore, a 2-year field study investigated trinexapac-ethyl (TE) [4-(cyclopropyl-Α -hydroxy-methylene)-3,5-dioxy-cyclohexanecarboxylic acid ethyl ester] as a winter management strategy to alleviate winter shade stress and determined the winter shade tolerance of 'L-93' creeping bentgrass under various reduced light environments. Treatments included a full-sunlight control; 58% and 96% morning, afternoon, and full-day shade artificial; and TE (0.02 kg a.i./ha) applied every 2 weeks from December to July. Data collection included daily light measurements (photosynthetic photon flux density), monthly canopy and soil temperatures, visual turfgrass quality (TQ), chlorophyll concentration, clipping yield, total root biomass, and total root nonstructural carbohydrates. Under 96% shade, canopy temperatures were reduced ≅ 57% from December to February, whereas soil temperatures were reduced 39% in February compared with full sunlight. Afternoon shade (58%) maintained acceptable TQ throughout winter for both years. Applying TE every 2 weeks in the winter negatively impacted bentgrass quality; however, TE enhanced spring and summer quality. Morning or afternoon shade minimally impacted parameters measured. Overall, moderate winter shade may not limit 'L-93' creeping bentgrass performance as a putting green in the transition zone. Results suggest winter shade does not contribute to creeping bentgrass summer decline because all shade-treated plots fully recovered from shade damage in spring months."
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Baldwin, C., H. Liu, L. B. McCarty, H. Luo, J. E. Toler, and C. M. Baldwin. 2009. 'L-93' creeping bentgrass putting green responses to various winter light intensities in the southern transition zone. HortScience. 44(6):p. 1751-1756.
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DOI: 10.21273/HORTSCI.44.6.1751
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MSU catalog number: b2217685a
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