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| Web URL(s): | http://usgatero.msu.edu/v08/n15.pdf
Last checked: 07/29/2009
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Fu, Jinmin;
Dernoeden, Peter H. |
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| Author Affiliation: | Fu: Horticulture Professor, Wuhan Botanical Garden, The Chinese Academy of Science, Wuhan City, Hubei, China; Dernoeden: Professor, Department of Plant Science and Landscape Architecture, University of Maryland, College Park, Maryland |
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| Title: | Creeping bentgrass putting green turf responses to two irrigation practices: Quality, chlorophyll, canopy temperature, and thatch-mat |
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| Source: | USGA Turfgrass and Environmental Research Online. Vol. 8, No. 15, August 1 2009, p. [1-13]. |
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| Publishing Information: | Far Hills, NJ: United States Golf Association, Green Section |
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| # of Pages: | 15 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Golf greens; Irrigation practices; Quality evaluation; Chlorophyll; Canopy temperature; Thatch; Irrigation rates; Irrigation frequency; Soil moisture; Color
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| Cultivar Names: | Providence |
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| Abstract/Contents: | "Frequent versus infrequent irrigation are two common irrigation practices. This field study was conducted on 'Providence' creeping bentgrass (Agrostis stolonifera L.) grown on a sand-based rootzone and maintained as a putting green. The objectives of this study were to measure several creeping bentgrass performance and physiological factors as influenced by light and frequent (LF) versus deep and infrequent (DI) irrigation. The LF plots were irrigated daily to moisten the upper 4 to 6 cm (1.6 to 2.4 inches) of soil, while DI plots were irrigated at leaf wilt to wet soil to a depth of approximately 24 cm (9.5 inches). The key findings of the study were: Creeping bentgrass quality generally was better in LF- than DI-irrigated bentgrass. The negative effects of DI on visual quality were greatest in the first summer following establishment and less objectionable in the second year in mature turf. The LF-irrigated creeping bentgrass exhibited very good color and quality throughout most of 2006 and 2007; whereas, DI-irrigated bentgrass exhibited acceptable quality in 2007, but not in 2006. The DI-irrigated bentgrass had lower chlorophyll levels in leaf and sheath tissue in 2006, but developed better color and quality and had higher chlorophyll levels in late summer of 2007 versus LF-irrigated bentgrass. This indicated that the turf was adapting to wilt stress or was a function of turf maturity. Canopy temperatures measured on sunny days between 11 a.m. and 3 p.m. in June, July, and August ranged from 33 to 40° C (91 to 104° F) . On dates when there were significant differences between irrigation treatments, canopy temperatures were higher in DI (two year average 39.2° C = 103° F) than LF (two year average 36.9° C = 98° F) bentgrass. Creeping bentgrass subjected to DI-irrigation developed a less thick thatch-mat layer, which contained 23% less organic matter than was found in LF-irrigated plots. Slightly more than twice the amount of water was applied to the LF- versus DI-irrigated plots. Allowing young creeping bentgrass greens to wilt prior to irrigating during the first summer of establishment probably should be avoided. The DI method, however, did result in less thatch-mat production and improved chlorophyll levels overtime, while significantly reducing water usage." |
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| Language: | English |
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| References: | 22 |
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| See Also: | Other Reports from this USGA research project: 2006-14-322 |
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| Note: | Summary as abstract
Pictures, color
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Fu, J., and P. H. Dernoeden. 2009. Creeping bentgrass putting green turf responses to two irrigation practices: Quality, chlorophyll, canopy temperature, and thatch-mat. USGA Turfgrass Environ. Res. Online. 8(15):p. [1-13]. |
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| Web URL(s):
http://usgatero.msu.edu/v08/n15.pdf
Last checked: 07/29/2009
Requires: PDF Reader |
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MSU catalog number: b3952822a |
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