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| Web URL(s): | https://archive.lib.msu.edu/tic/its/articles/2001jou291.pdf
Last checked: 09/29/2008
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| Publication Type:
| Refereed |
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| Author(s): | Huang, B.;
Fu, J. |
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| Author Affiliation: | Department of Horticulture, Forestry and Recreation Resources, Kansas State University, Manhattan, KS |
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| Title: | Growth and physiological responses of tall fescue to surface soil drying |
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| Section: | Physiology
Other records with the "Physiology" Section
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| Meeting Info.: | Toronto, Ontario, Canada: July 2001 |
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| Source: | International Turfgrass Society Research Journal. Vol. 9, No. Part 1, 2001, p. 291-296. |
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| Publishing Information: | Oakville, Ontario, Canada: International Turfgrass Society |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Soil moisture; Growth rate; Respiration rate; Growth; Physiological responses; Festuca arundinacea; Surfaces; Drought stress; Drought resistance; Canopy resistance; Dry weight; Water uptake; Root growth
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| Abstract/Contents: | "Drought stress often occurs in the soil surface although water reserve may be adequate deeper in the soil profile. The objective of this study was to investigate physiological responses of tall fescue (Fescuta arundinacea Schreb.) to surface soil drying. Such information is important for further understanding of drought resistance mechanisms in turfgrasses. Plants were grown in greenhouse in split polyvinyl chloride tubes consisting of two sections (each 10 cm in dia., 20 cm long). Plants were subjected to three soil moisture treatments for 42 d: a) well watered control: the whole soil profile (40 cm) was well watered; b) surface soil drying: the surface 20 cm of soil was allowed to dry down by withholding irrigation and the lower 20 cm was watered; c) full drying: the whole soil profile (40 cm) was allowed to dry down. Surface soil drying generally had no effects on turf quality and leaf relative water content (RWC), except at 15 d for turf quality and 17 d for RWC. Canopy net photosynthetic rate (Pn) of surface-dried plants increased to the maximum level at 11:00 h and decreased at 15:00 h, following the same diurnal pattern as well-watered plants. Also, the absolute levels of Pn were not significantly different between surface drying and control treatment during the day. Leaf growth rate (LGR) of surface-dried plants decreased to below the control level, beginning at 8 d of treatment. Canopy respiration rate (Rcanopy) and root respiration rate (Rroot) of surface-dried plants were lower than those of the control. Root to shoot dry weight ratio (R/S) and the proportion of roots in the deeper soil layer increased with surface drying. These results suggest that when water was sufficient for plant uptake in the deeper soil profile, tall fescue could adapt to surface soil drying gradually by developing deeper roots and lowering canopy and root respiration. Full drying, however, had adverse effects on all the physiological parameters." |
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| Language: | English |
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| References: | 32 |
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| See Also: | Also published as chapter 1 of Growth and Physiological Responses of Turfgrasses to Deficit Irrigation, 2003, R=101512 R=101512 |
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| See Also: | Other items relating to: Disasters - Drought |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Huang, B., and J. Fu. 2001. Growth and physiological responses of tall fescue to surface soil drying. Int. Turfgrass Soc. Res. J. 9(Part 1):p. 291-296. |
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MSU catalog number: SB 433 .I52 v. 9 |
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