The first seeded cultivar of seashore paspalum has been developed. Great promise for continued improvement of the level of salt tolerance within this halophytic species. The genotypic variability among ecotypes demonstrated in this experiment combined with the development of a screening method to efficiently identify ecotypes with superior salt tolerance offers Two new genotypes, SeaIsle Supreme and SI 99 with salt tolerance levels superior to any previous reports were identified. Salt tolerant cultivars are expected to have the ability to maintain growth and thereby have minimal reduction in total biomass when exposed to salt. Higher ratings of visual appearance of turf quality presented as leaf firing ratings and higher biomass production (clip weight, verdue weight, crown and root weight, and total biomass weight) are positive indicators of salt tolerance. Large genotypic differences were observed for all traits measured. Progress 01/01/06 to 12/31/06 Outputs Six replications of 15 genotypes including 14 seashore paspalum genotypes and one ultra-dwarf bermudagrass genotype, TifEagle were simultaneously evaluated in a greenhouse study at each of three salt concentrations. Impacts investigator retired 2007 Publications PROJECT MODIFICATIONS: Not relevant to this project. ![]() TARGET AUDIENCES: Not relevant to this project. Progress 10/01/02 to 09/30/07 Outputs OUTPUTS: investigator retire 2007 PARTICIPANTS: Not relevant to this project. Responses, deep rooting capability/persistent root plasticity. TALL FESCUE: stress tolerance evaluations involving acid soils, drought, high heat and humidity, disease (especially brown patch-Rhizoctonia solani) Investigations into bioremediation capabilities of paspalum. Development of a seeded seashore paspalum. Ecotype assessment for various insect and disease responses. Greens management protocols to maximize performance. Investigations into variable release fertilizer products to streamline judicious use of fertilizers on paspalum. Best management practices (BMPs) will be developed for preemergence and postemergence herbicide efficacy on paspalum including encroachment issues with other grass species. Winter hardiness traits will involve an initial strategy involving molecular modulation of bioactive gibberrelic acid content. Project Methods SEASHORE PASPALUM: Using multiple environmental stresses (acid soils, high/low temperatures, cyclic drought, salinity, high bulk density non-expanding clay soils) to identify persistent rooting ecotypes. Ron Driscoll is the manager of editorial services for the USGA. Today, it is commonly used in lawns, recreation areas and golf courses far and wide, but those two seaside greens at Casa de Campo were proving grounds for its future success. ![]() According to Malena, the grass introduced in 2001 on Nos. The warm-season perennial grass tolerates sandy and infertile soils, high salt concentrations and occasional inundation by seawater, which led to its installation and adoption by Malena and Dye on their marquee course. The USGA joined Georgia in a joint project in the mid-1990s, and the first two cultivars – one for tees and fairways, one for greens – were released in 2000. ![]() 8.”ĭuncan, a longtime turfgrass breeder and geneticist, saw the burgeoning need for a salt-tolerant grass, and he initiated the first breeding program for seashore paspalum in 1993 at Georgia. Duncan from the University of Georgia to receive some plugs in 2001, and we made the first trials on No. “This was definitely the first place in the Caribbean to start working with seashore paspalum, and those greens were the first trial for it,” said Malena, 68. Nunez Malena, who has been at this course for 38 years, quickly concurred, then expounded on the history. “This has to be one of the first places where seashore paspalum was used,” said Darin Bevard, director of championship agronomy for the USGA. ![]() For the first 30 years of the course’s existence, the salt-intolerant bermudagrass on the two putting surfaces was frequently damaged from the spray. However, the proximity of these two greens to the Caribbean Sea means that they are often sprayed – and occasionally doused – by saltwater. As players stand over the daunting tee shots on the stunning seaside par-3 fifth and eighth holes of the Teeth of the Dog Course at Casa de Campo in the Latin America Amateur, the notable agronomic history of these putting surfaces does not enter their minds.
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