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| Web URL(s): | http://archive.lib.msu.edu/tic/rpr/2000/72135,%20%20U%20Georiga,%20Duncan,%20genetic.PDF
Last checked: 02/07/2013
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Material Type: | Manuscript |
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| Monographic Author(s): | Duncan, R. R.; Johnson, B. J.; Braman, Kris; Carrow, R. N.; Murphy, Tim; Adriano, Domy; Camberato, Jim; Golden, Jimmy; Huang, Bingru; Shuman, L. M.; Ingram, Keith; Lee, Geungjoo |
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| Author Affiliation: | Duncan: University of Georiga; Adriano: Savannah River Nuclear Plant, Aiken, SC; Camberato and Golden: Clemson University; Huang: Rutgers; and Shuman and Ingram: UGA |
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| Monograph Title: | Genetic Enhancement of Paspalum for Recreational Turf: Development of Minimal Input Best Management Practicies for Paspalum: November 2000 USGA Annual Report, 2000. |
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| Publishing Information: | [Far Hills, New Jersey]: United States Golf Association |
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| # of Pages: | 13 |
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| Collation: | 9, 71-74 pp. |
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| Keywords: | TIC Keywords: Breeding improvement; Cultivar evaluation; Disease control; Insect resistance; Research priorities
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| Abstract/Contents: | "Three accessions were released from quarantine: one from South Africa, one from the Bahamas, and one from Belize. An additional 7 ecotypes were collected during the year and are being increased in the greenhouse over the winter months for subsequent field evaluations in 2001. Research is continuing on producing a seeded hybrid paspalum and collaboration continues with private seed companies in Orgeon. Sea Isle 1 has been licensed to 24 growers in 9 states with production at 33 sites in the US. The grass will be licensed internationally through an international broker working out of Canada. Management studies on encroachment issues (paspalum into bermuda - Confront + MSMA) is providing 70% suppression of paspalum with minimal injury to the bermuda, but multiple applications will be needed to completely take out the paspalum. Bermuda encroachment into paspalum is more difficult, but Prograss + Cutlass has provided >85% bermuda suppression in paspalum; however, multiple applications are needed and paspalum injury has exceeded 50% especially when air temperatures >85 F. Additional studies will be implemented with Primo at reduced rates in conjuction with Prograss and using Poast alone to see if the paspalum injury problem can be reduced. Insect resistance evaluation studies have related an experimental 561-79, a slection out of Argentina, that has broad-based resistance to most of the insect problems: mole crickets, armyworm, white grubs, spittle bugs). Outbreaks of fusarium blight, pythium blight, dollar spot, anthracnose (when <77 F), and helminthosporium/curvularia have been reported on the grass in field/golf course situations. Potassium is a key defense strategy and should be maintained at high levels or spoon-fed on a regular basis. Soluable N can be supplied in a prescription format (fertigation, small amounts put on frequently) to combat the dollar spot, with supplementation using fungicides. Sea Isle 2000 gets very little dollar spot and Sea Isle 1 gets less dollar spot than Salam (Southern Turf proprietary cultivar). The paspalum website (www.georgiaturf.com) is on line. The Book SEASHORE PASPALUM - THE ENVIRONMENTAL TURFGRASS became available from Ann Arbor Press in June 2000. A 1-day GCSAA-sponsored workshop has been developed: SEASHORE PASPALUM MANAGEMENT ON GOLF COURSES. These were probably the biggest accomplishments for 2000 to come out of the project. Salininty tolerance assessments revealed that several ecotypes have excellent salinity tolerance and are true halotypes: HI 26, HI 36, HI 101, HI 10, HI 33, HI 14, and HI 8 were in the top grouping statistically. These ecotypes have the capability to function at 50 dS/m salt (ocean water is 54 dS/m). Salinity tolerance mechanisms were related to maintenance of total water potential and shoot K content, escalated proline synthesis, and inorganic ion uptake (K, Na, Cl). Multiple salt resistance mechanisms in this halophytic grass are functioning at higher salinity stress levels. Na is required as a micronutrient and Cl is required as a macronutrient to drive some of the biochemistry/phsiology involved in growth and development. In summary, we have a pretty good handle on relative level of salinity tolerance, with several cultivars being able to withstand ocean-level salt (ECw=54 dS/m or SAR= 57 dS/m) as long as proper management protocols are followed. We now know the mechanisms involved in traffic tolerance in paspalum compared to bermudagrass. We have been able to ascertain the mechanisms of salinity tolerance for this halophytic grass. We have found parallel abiotic stress tolerances for salinity, drought, acid soils, and low light intensity among several cultivars. Management protocols are being taylored to water/soil/environmental interations, with salt level as a primary determining factor. We will be on a significant learning curve over the next few years as more and more of this grass is planted on golf courses, sports fields, and lawn/landscape venues, but we can at least put people in the ballpark on general management guidelines. The book will be a vital reference source. The website will provide the bullet management points and new things coming through the research program. Practical experience supplements will be added to the website as needed to updated overall management protocols." |
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| Language: | English |
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| References: | 0 |
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| See Also: | See also related summary article, "Genetic enhancement of paspalum for recreational turf",2000 Turfgrass and Environmental Research Summary [USGA], 2000, p. 33, R=72135. R=72135 |
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| Note: | Also appears as pp. 535-547 in the USGA Turfgrass Research Committee Reporting Binders for 2000
"November 2000 USGA Annual Report"
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
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Last checked: 02/07/2013
Requires: PDF Reader |
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