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http://dx.doi.org/10.13087/kosert.2011.14.2.021

Effect of High Water-Swelling Polymer Rate on Seedling Survival of Major Turfgrasses Grown on Soil Organic Amendment Mixtures  

Kim, Kyoung-Nam (Dept. of Horticulture, College of Science and Technology, Sahmyook University)
Park, So-Hyang (Dept. of Environmental Horticulture, Graduate School, Sahmyook University)
Publication Information
Journal of the Korean Society of Environmental Restoration Technology / v.14, no.2, 2011 , pp. 21-32 More about this Journal
Abstract
The effects of high polymer on the seedling survival were investigated in three major turfgrasses. Twelve treatments were used in the study with different rates of sand, soil organic amendment (SOA), and water-swelling polymer (WSP). Turfgrass seedling survival rate was evaluated in creeping bentgrass (CB), Kentucky bluegrass (KB), and zoysiagrass (Zoy) grown under greenhouse conditions. Significant differences were observed among the treatments. Seedling survival rates were variable in CB, KB, and Zoy according to mixing rates of SOA and WSP, being maximum 20.2% in differences. At 6 weeks after seeding, the survival rates ranged from 0.6 to 61.9% in CB, 4.2 to 75.3% in KB and 1.7 to 82.1% in Zoy. A pattern of seedling emergence varied with time among treatments influenced by WSP rates. A proper mixing rate of WSP is considered to be 5% for CB and 5 to 10% for KB and Zoy. In general, overall effect of WSP on seedling survival was clearly observed in the mixtures of sand 80% and SOA 20% in CB. The best result, however, was found from the mixture of sand 85% and SOA 15% in both KB and Zoy. When mixing sand with WSP, a proper rate of SOA is considered to be 20% for CB and 15 to 20% for KB, while 10 to 15% for Zoy. A further research is needed to investigate the effects of WSP on the turf quality in mixtures of sand, SOA, and WSP before a field application.
Keywords
Creeping bentgrass; Germination rate; Kentucky bluegrass; Water-absorbing polymer; Zoysia japonica;
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Times Cited By KSCI : 5  (Citation Analysis)
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