The Effects of Inorganic Soil Amendment on Growth of Creeping Bentgrass(Agrostis palustris) in Golf Course

무기 토양개량제가 골프장 그린의 크리핑 벤트그래스 생육에 미치는 영향

  • Lee, Jae-Pil (Major in Golf Course and Turfgrass, Graduate School of Agriculture and Animal Science, Konkuk University)
  • 이재필 (건국대학교 농축대학원 생명산업학과 골프장잔디전공)
  • Received : 2012.05.02
  • Accepted : 2012.05.25
  • Published : 2012.08.31

Abstract

Soil amendments have been used to improve the physical and chemical condition of turf soil, which might optimize turfgrass growth in golf courses. This study was to investigate the effect of inorganic soil amendment (ZC) established in USGA root zone system on growth of creeping bentgrass, cv. 'Penncross' carried out from May to Dec. in 2005 at the nursery on Sinwon Golf Course. To analyze the effects of inorganic soil amendment on pH, specific gravity, infiltration rate, water content, soil hardness, root length, tiller density and dry weight were measured. pH was 6.7-6.8, specific gravity of sand (S) 100% was 1.48 heavier than the other treatments (1.28-1.38). Infiltration rate with ZC 15% + peat moss (P) 5% + S 80% and ZC 10% + S 90% was faster than S 100%. Soil hardness of S 100% was the highest. Root length of creeping bentgrass of P 10% + S 90% (8.6-12.0 cm) was the longest. Tiller density with P 5% + S 95% was more 4-7 ea than other treatments in summer season. In growing season, however, ZC 10% + P 5% + S 85% was more 2-3 ea than others. Dry weight of creeping bentgrass treated by ZC 10% + P 5% + S 85% in summer season and P 5% + S 95% in growing season were heavier than other treatments. It is recommended to combine 5-15% inorganic soil amendment and peat moss 5% with sand in order to sustain soil balance.

Acknowledgement

Supported by : Yangpyo Company

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