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http://dx.doi.org/10.5333/KGFS.2005.25.2.125

Effect of Sowing Dates on Turf Vegetation of Creeping Bentgrass  

Cho, Nam-Ki (College of Applied Life Science, Cheju National University)
Kang, Young-Kil (College of Applied Life Science, Cheju National University)
Song, Chang-Khil (College of Applied Life Science, Cheju National University)
Cho, Young-Il (College of Agric & Life Science, Seoul National University)
Park, Sung-Jun (College of Applied Life Science, Cheju National University)
Publication Information
Journal of The Korean Society of Grassland and Forage Science / v.25, no.2, 2005 , pp. 125-130 More about this Journal
Abstract
This study was conducted from March 16 to July 6 in 2004 at Jeju Island to investigate the influences of sowing dates(on March 16, March 26, April 5, April 15 and April 25) on creeping bentgrass vegetation. The result obtained were summarized as follows; Plant height was 22.7 cm at March 16 planting. It was longest but after that planting, plant height gradually shorted. Then it was shortest at April 25 planting(16.6 cm). Root length and Minolta SPAD-502 chlorophyll reading value were directly proportional plant height response. Leave and root weight were greatest at March 16 planting. It were 1,373 kg /10a and 2,374 kg /10a, respectively. These weight decreased gradually as planting was delayed from March 16 to April 25. Degree land cover and density of creeping bentgrass were $98.0\%$ and $99.3\%$, respectively, at March 16. After that planting they were decreased ($97.5\%$, $98.7\%$). But degree land cover and density of weed tended to increased gradually as the planting was delayed. The number of weed species were increased from March 16 to April 25. It showed increase that Poa annua, Stellaria media and Chenopodium album var. centrorubrum(at March 16 planting), Poa annua, Digitaria adscendens and Chenopodium album var. centrorubrum(at March 26 planting), Digitaria adscendens, Chenepodium album var. centrorubrum and Stellaria media(at April 5 planting), Digitaria adscendens, Stellaria media and Chenopodium album var. centrorubrum(at April 15 planting), Digitaria adscendens, Polygonum hydropiper, Chenopodium album var. centrorubrum(at April 25 planting). Based on the these findings, optimum sowing date for growth of creeping bentgrass seems to be about early seeding in atmospheric phenomena and volcanic ash soils of Jeju island.
Keywords
Sowing date; Turf vegetation; Creeping bentgrass; Weed;
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