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| Web URL(s): | http://archive.lib.msu.edu/tic/rpr/1993/Turfgrass/65317,%20U%20Nebraska,%20Riordan.PDF
Last checked: 11/18/2013
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Material Type: | Manuscript |
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| Monographic Author(s): | Riordan, Terrance P.; Johnson-Cicalese, Jennifer; Horst, Garald L.; Gaussoin, Roch; Wit, Leonard A.; Rodgers, Charles A.; Giese, Matthew; Baxendale, F. P.; Weinhold, T. P.; Grisso, R. D.; Watkins, J. E.; Jensen, S. G.; Yuen, G. Y.; Klucas, R. V.; Westerholt, S. R. |
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| Author Affiliation: | Riordan: Professor, Turfgrass Breeding; Johnson-Cicalese: Project Coordinator, USGA Buffalograss Project; Horst: Associate Professor, Turfgrass Physiology; Gaussoin: Assistant Professor, Extension Turfgrass Specialist; Wit: Supervisor, JSA Turfgrass Research Facility; Rodgers and Giese: Graduate Student; Baxendale: Cooperator and Asst. Professor; Weinhold: Cooperator and Research Assistant, Entomology; Grisso: Cooperator and Asst. Professor, Biological Systems Engineering; Watkins: Cooperator and Professor; Jensen: Cooperator and Associate Professor; Yuen: Cooperator and Assistant Professor, Plant Pathology; Klucas: Cooperator and Professor, Biochemistry; and Westerholt: Cooperator and Technician, Horticulture |
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| Monograph Title: | Breeding, Evaluation and Culture of Buffalograss for Golf Course Turf: [1993 Annual Research Report], 1993. |
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| Publishing Information: | [Lincoln, Nebraska]: University of Nebraska |
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| # of Pages: | 27 |
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| Collation: | [2], 2, [1], 3-24 pp. |
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| Abstract/Contents: | "Status of '609' Buffalograss: '609' sales are expected to meet Crenshaw & Doguet's 1993 projection of $800,000. This has been accomplished by selling almost all of the 104 acres at Bastrop, TX. A royalty check of $20,000 has just been received, and total royalties for 1993 should be about $48,000. Two visits to Texas allowed '609' to be evaluated under record-breaking drought and heat conditions. '609' did go off color earlier than bermuda when no irrigation was used. However, it recovered faster than bermuda in most situations. '609' was used at the new Boulders golf course in Acworth, Georgia and it was the only grass to survive a 30 day submersion during a flood at a Missouri sod farm. Status of '315' and '387': Approximately 15 acres of '315' have been planted at Nickerson, Nebraska, and 20 acres of '378' have been planted at Meade, Nebraska. Sod and plugs will be available in 1994. Both cultivars have been officially released by UNL, and plant patents are nearly complete. Status of Seeded Buffalograss: Cold, wet weather in 1993 has negatively affected Buffalograss seed production and has set back the release of new seeded cultivars. However, both cooperating groups, Native Turfgrass Group (NTG) and Sharps Bros, continue to make progress toward developing turf-type Buffalograss. National Buffalograss Trials - Update: '315', '378', AZ143, NE 84-436, and NTDG-2 were the top performers during 1992 and 1993 at our Meade, NE location. '609' performed poorly because it was severely damaged each winter. The NTEP has distributed 1992 results from 22 locations that reported data. Nationally, '315', '378', AZ-143, Buffalawn, and NE 84-436 are the top vegetative selections, and the NTDG series are the top seeded buffalograsses. Buffalograss Management Studies: The phytotoxicity of several herbicides, including MON 12051, Barricade, pendimethalin, and Dimension, was evaluated to determine their potential for use on buffalograss. No phytotoxicity was observed, indicating that with proper label clearance their use would be acceptable. Observations of the planting date study initiated in 1992 indicate that cultivars differ in their optimum planting date. '315' plots planted in September showed complete survival. A buffalograss traffic tolerance study was initiated with two mowing heights, three fertility levels, and two traffic levels. Preliminary observations indicate excellent tolerance and recovery from wear. Transplant shock in buffalograss sod can be a serious problem. Therefore, a number of preventative treatments are being evaluated and buffalograss selections are being screened for differences in sod characteristics such as transplant shock, sod strength, and regrowth. Student Progress: The University of Nebraska has two new graduate students working buffalograss related projects. Charlie Rodgers is a Ph.D. candidate in the buffalograss breeding area. Matt Giese is pursuing a master's degree and will study sod characteristics. Jennifer Johnson-Cicalese is continuing her work on a Ph.D. Breeding Work: Since its inception nine years ago, the buffalograss breeding project has made considerable progress in improving the turfgrass characteristics of buffalograss. Characteristics that are now being evaluated include wear, shade and low mowing tolerance, insect and disease resistance, spring greenup, fall dormancy, seed yield, germination rate, seedling vigor, and sod qualities. A large number of selections are evaluated each year and plants which show particular promise are either further evaluated for vegetative release, or used for population improvement and development of seeded turf-type buffalograsses. In 1992 evaluations, over half of the selections in three replicated buffalograss trials had significantly better turf quality than Texoka, indicating that progress is being made. A wide range in spring greenup and fall dormancy ratings suggest that improvements can be made in extending the relatively short growing season of buffalograss. Experimentals that are being considered for release as vegetative cultivars are three female selections, NE84-409, NE91-116, and NE91-118 and a male selection, NE84-45-3. There is continuing effort at UNL to develop seeded turf-type buffalograss. Seed has been harvested from four large synthetic blocks. Parents for a new breeding population with low mowing tolerance has been selected. Efforts to improve establishment characteristics of seeded buffalograsses are underway, including germination and seedling vigor. New trials include a study of 53 vegetative and 21 seeded selections, and a study planted under a stand of trees for preliminary shade tolerance evaluations. Traffic treatments were initiated this summer on two older trials and preliminary observations suggest differences among selections in wear tolerance. Buffalograss Insect and Disease Research: Several screening trials have indicated significant differences among buffalograss selections in resistance to mealybugs. '609', Prairie and a few experimentals consistently show good resistance. Progeny of 20 different selections were also screened for resistance and 8% showed no signs of mealybug infestation. These plants were planted in an isolated crossing block for development of a seeded cultivar with enhanced resistance to mealybugs. Studies on mechanism of resistance suggest that leaf pubescence may be involved. Scanning election microscopy is being used to evaluated leaf pubescence. Further isolation from diseased buffalograss tissue indicate that the organism causing the "leaf spot disease" is probably Bipolaris buchloe." |
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| Language: | English |
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| References: | 0 |
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| See Also: | See also related summary article "Breeding, evaluation and culture of buffalograss for golf course turf" 1993 Turfgrass Research Summary [USGA], 1993, pp. 18-19, R=65317. R=65317 |
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| Note: | Also appears as pp. 00083-00110 in the USGA Turfgrass Research Committee Reporting Binders for 1993.
"USGA Progress Report - Fall 1993"
"B:USGAREP.93"
Tables |
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