Asian Journal of Turfgrass Science (아시안잔디학회지)

Turfgrass Society of Korea (한국잔디학회)
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Evaluating Various Nitrogen Sources for Divot Recovery on Creeping bentgrass

Creeping bentgrass의 생육과 디봇피해 회복을 위한 질소의 유형별 효과

  • Lee, Sang-Kook (Research Institute for Basic Sciences, Hoseo University)
  • 이상국 (호서대학교 기초과학연구소)
  • Received : 2012.07.16
  • Accepted : 2012.08.03
  • Published : 2012.08.31
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Abstract

Creeping bentgrass (Agrostis stolonifera) is one of the most popular turfgrasses for high-quality playing surface such as putting green on golf courses and athletic fields. Continues damage such as divot injury on creeping bentgrass is major issue to maintain golf course properly. Although plentiful researches to maximize divot resistance have been reported, minimal research has focused on relation between nitrogen (N) sources and divot resistance. The study was conducted to determine the effect of N source for turfgrass divot recovery and overall tee performance. Eleven fertilizer treatments as N sources were applied to creeping bentgrass 'Penncross'. Before the first application, divot injuries were simulated by removing a core of soil and turfgrass from established plots and backfilling with native soil. Data collection included turfgrass color and quality. N release speed did not influenced divot recovery. Frequency of urea application had no effects on divot recovery. Urea with split application had no difference with no treatment for divot recovery. Polyon product especially polyon mini (41-0-0) had the best performance for divot recovery and for maintaining better turfgrass quality. Overall, small particle size of slow-release N form would influence creeping bentgrasss to recover divot damage.

Creeping bentgrass 는 골프장의 티나 퍼팅그린 그리고 경기장과 같이 집중관리가 요구되는 곳에 가장 많이 사용되는 잔디의 종류중 하나이다. 골프장에서 계속해서 발생하는 디봇과 같은 피해는 골프장을 관리하는데 있어서 가장 큰 장애요인중 하나이다. 디봇피해를 회복하기 위한 많은 연구결가가 선행 되었음에도 불구하고, 질소의 유형에 따른 디봇피해의 회복에 대해서는 그 연구결과가 제한적이다. 본 연구는 creeping bentgrass 에 발생한 디봇 피해에 대한 질소의 유형별 효과에 대해 알아보기 위해서 수행되었다. 11가지 질소가 creeping bentgrass 'Penncross' 에 시비되었다. 첫번째 시비처리 이전에 일정한 단위규격당 디봇피해가 만들어 졌으며 피해가 생긴 빈자리에 원토양이 채워졌다. 실험기간동안 잔디의 색과 질이 평가되었다. 질소의 분해속도에 따른 효과는 디봇피해를 회복시키거나 creeping bentgrass 생육에 대해 영향을 미치지는 않았다. 총 4번에 걸쳐 시비한 urea 처리구는 질소가 시비되지 않은 대조구와 비교했을때 디봇의 회복이나 creeping bentgrass 생육에 대해 차이가 나타나지 않았다. 디봇피해에 대한 회복과 creeping bentgrass 생육에 대해 polyon 제품군, 특히 polyon mini (41-0-0)가 가장 좋은 효과를 보여 주었다. 본 실험결과 입자의 지름이 작은 완효성질소가 입자의 지름이 큰 완효성질소나 속효성질소 보다 creeping bentgrass 에 발생한 디봇피해의 회복에 좋은 효과를 나타냈다.

Keywords

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