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| Web URL(s): | https://www.crops.org/publications/cs/pdfs/41/6/1878
Last checked: 04/04/2007
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| Publication Type:
| Refereed |
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| Author(s): | Xu, Qingzhang;
Huang, Bingru |
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| Author Affiliation: | Department of Plant Science, Rutgers University, New Brunswick, NJ |
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| Title: | Lowering soil temperatures improves creeping bentgrass growth under heat stress |
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| Section: | Turfgrass science
Other records with the "Turfgrass science" Section
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| Source: | Crop Science. Vol. 41, No. 6, November/December 2001, p. 1878-1883. |
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| Publishing Information: | Madison, WI: Crop Science Society of America |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Soil temperature; Agrostis stolonifera; Heat stress; Growth; Air temperature; Visual evaluation; Chlorophyll; Shoot growth; Growth rate; Tiller density; Clipping weight; Roots
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| Cultivar Names: | L-93; Penncross |
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| Abstract/Contents: | "High soil temperature is a major factor limiting growth of cool-season grasses. The objectives of this study with creeping bentgrass (Agrostis palustris Huds.) were to examine growth responses to lowering soil temperatures from the supraoptimal level under high air temperature conditions, and to determine the minimum reduction in soil temperature that could improve shoot and root growth. Two creeping bentgrass cultivars, L-93 and Penncross, were exposed to the following air and soil temperature regimes in growth chambers and water baths: (i) optimal air and soil temperatures (20/20°C, control); (ii) lowering soil temperature by 3, 6, and 11°C from 35°C at high air temperatures (35/32, 35/29, 35/24°C); and (iii) high air and soil temperatures (35/35°C). Soil temperature was reduced from 35°C by circulating cool water (18°C) in water baths at variable rates. Turf quality, leaf chlorophyll content, shoot growth rate, and root/shoot ratio (R/S) ratio increased as soil temperature was reduced from 35 to 32°C to a greater extent for Penncross than for L-93. Significant increases in tiller density, clipping yield, root number, and fresh weight were not observed until soil temperature was reduced to 29°C. When soil temperature was reduced to 24°C, turf quality, shoot growth rate, and R/S were maintained at the same levels as in the control regime. These results suggested that reducing soil temperature by 3°C or more is effective in improving turf quality and shoot and root growth of creeping bentgrass exposed to high air temperatures." |
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| Language: | English |
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| References: | 25 |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Xu, Q., and B. Huang. 2001. Lowering soil temperatures improves creeping bentgrass growth under heat stress. Crop Sci. 41(6):p. 1878-1883. |
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| Web URL(s):
https://www.crops.org/publications/cs/pdfs/41/6/1878
Last checked: 04/04/2007
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: SB 183 .C7 |
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