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파종량이 Creeping Bentgrass 잔디초지의 식생에 미치는 영향

2005; Volume: 25; Issue: 2 Linguagem: Inglês

2287-5832

조남기, 강영길, 송창길, 조영일, Sung-Jun Park,

Diverse Approaches in Healthcare and Education Studies

This study was conducted from March 21 to July 7 in 2004 at JeJu Island to investigate the influences of seeding rates (4, 6, 8, 10 and 12 kg/10a) on creeping bentgrass vegetation. The result obtained were summarized as follows; plant height was getting longer as seeding rate increased from 4 to 12 kg/10a, Although it was no significance from 10 to 12 kg/10a. Root length, Minolta SPAD-502 chlorophyll reading value, leave and root weight increased as the plant height increased. The degree of land cover and density of creeping bentgrass also increased as seeding rate increased from 4 to 12 kg/10a, and the degree of land cover and density of weed decreased. The number of weed species were decreased as increasing of seeding rate. Then ranking of the dominant weeds were Digitaria adscendens, Chenopodium album var. centrorubrum and Poa annua (at 4 kg/10a seeding rate), Digitaria adscendens, Chenopodium album var. centrorubrum and Stellaria media (at 6 kg/10a seeding rate), Chenopodium album var. centrorubrum, Poa annua and Digitaria adscendens (at 8 kg/10a seeding rate), Digitaria adscendens, Chenopodium album var. centrorubrum and Stellaria media (at 10 kg/10a seeding rate), Chenopodium album var. centrorubrum, Digitaria adscendens and Stellaria media (at 12 kg/10a seeding rate). These results showed that the optimum seeding rate is 10 kg/10a for growth of creeping bentgrass in volcanic ash soils of Juju island.