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| Web URL(s): | http://archive.lib.msu.edu/tic/rpr/1997/54542%20,%20Texas%20A&M,%20White.PDF
Last checked: 03/18/2013
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Material Type: | Manuscript |
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| Monographic Author(s): | White, R. H.; Taylor, Gene; Abernathy, Scott; Jordan, John |
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| Author Affiliation: | White: Principal Investigator, Texas Agricultural Experiment Station, Texas A&M University System; and Taylor, Abernathy, and Jordan: Graduate Research Assistant |
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| Monograph Title: | Physiological Basis for Selection of Bentgrass with Superior Drought Resistance: Final Research Progress Report, 1997. |
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| Publishing Information: | [College Station, Texas]: Texas Agricultural Experiment Station, Texas A&M University System |
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| # of Pages: | 21 |
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| Collation: | [1], 8, [12] pp. |
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| Abstract/Contents: | "Twenty-eight maternal clones of creeping bentgrass were evaluated for tolerance to moisture deficit tolerance. Using a greenhouse based screening procedure, clones were identified with high, intermediate, and low resistance to water stress. Ranking in greenhouse based procedures were relative to previous performance in filed based parent/progeny trials. These results provide support for the relevance of this greenhouse based screening procedure. Further evaluations of the water relations characteristics of specific clones indicated that superior performance was associated with more negative osmotic potential and low cell wall elasticity. The heritability of these traits has not been confirmed. Performance and water balance of nine creeping bentgrass cultivars was evaluated under irrigation intervals of 1-day, 2-day, and 4-day. Irrigation interval had less influence on turf quality than expected. However, irrigation interval had a significant effect on leaf turgor potential of A4, Crenshaw, L93, Mariner, and Penncross. Frequent irrigation had a negative impact on plant water status and caused a decrease in turf quality due to a decrease in density and an increase in algae. Cultivars, such as L93 and Crenshaw, maintained positive water balance and good turf quality with infrequent irrigation. Differences in turgor maintenance capability of creeping bentgrasses under putting green conditions were demonstrated as well as the relationship between irrigation frequency and plant water status. Less frequent irrigation allowed a favorable water balance in specific cultivars without sacrificing putting green quality. Inter-seeding research indicated that this process can be used to successfully establish a new bentgrass into an existing Penncross bentgrass golf green. Although the percentage change in the population could be considered low, population shifts of about 5 to 30% were observed following a single inter-seeding in conjunction with minimal cultivation following inter-seeding. Based on controlled blending experiments, weakly adapted cultivars reduce putting green quality of blends with even strongly adapted cultivars. Although evidence for disease suppression was not clearly delineated, judicious blending can provide a strong putting surface with careful cultivar selection. Care should be used in selection of a cultivar for use in inter-seeding. Based on blending studies, a cultivar that provides superior quality as a single variety may not provide an improvement in putting green quality when blended through the inter-seeding process with an existing poorer performing cultivar." |
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| Language: | English |
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| References: | 0 |
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| See Also: | See also related summary article, "Improve of Poa annua var. reptans for golf turf", 1997 Turfgrass and Environmental Research Summary [USGA], 1997, R=54542. R=54542 |
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| Note: | "Final Research Progress Report"
"10 December 1997"
"Research Period: 1 August 1994 through 1 November 1997"
Also appears as pp. 245-266 in the USGA Turfgrass Research Committee Reporting Binders for 1997
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
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Last checked: 03/18/2013
Requires: PDF Reader |
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