Abstract

본 연구는 켄터키블루그래스 내에 발생한 크리핑벤트그래스를 방제하기 위하여 제초제를 선발하고, 그 피해 지역에 켄터키블루그래스의 샌드인젝션파종에 의한 회복방법을 개발하기 위해 수행되었다. 약제선발시험에 이용된 제초제는 메코프로프액제(mecoprop; MCPP), 트리클로로 피르티이에이액제(triclopyr-TEA; Tri-T), 이마자퀸액제(imazaquin; Ima), 벤타존액제(bentazone; Ben) 및 페녹슐람 피라조설퓨론에틸입상수화제(penoxsulam pyrazosulfuronethyl; PPE)와 같은 선택성제초제와 글리포세이트액제(glyphosate; Gly), 파라콰트디클로라이드액제(paraquat dichloride; Pad) 및 글리포세이트암모늄 옥시플루오르펜입 상수화제(glyphosate ammonium oxyflorfen; GAO)와 같은 비선택성제초제를 이용하였다. 엽색지수와 엽록소지수 및 방제 효과를 통해 크리핑벤트그래스의 방제에 효과적인 선택성제초제는 Tri-T 배량(2Tri-T)처리이었으며, 비선택성 제초제 중에서는 GAO 1/5량(1/5GAO)이 우수하였다. 크리핑벤트그래스가 침입한 켄터키블루그래스 포장에서 2Tri-T와 1/5GAO의 방제효과는 각각 6.0과 7.4로 우수하였다. 방제지역에 켄터키블루그래스를 샌드인젝션을 통해 파종 후 약 30일 후에는 약 <TEX>$70{\pm}3%$</TEX> 정도의 피복율을 보였고, 50일 후에는 대조구와 비슷하게 회복되었다. This study was conducted to evaluate the selective control of creeping bentgrass invaded in Kentucky bluegrass by applying several herbicides and recovery of Kentucky bluegrass by sand injection seeding method. Selective herbicides such as mecoprop, triclopyr-TEA, imazaquin, bentazone and penosulam pyrazosulfuro-ethyl and non-selective herbicides such as glyphosate, paraquat dichloride and glyphsate ammonium oxyflorfen were used. Selective suppression of creeping bentgrass in Kentucky bluegrass was evaluated by turf color, chlorophyll and visual control indexes. Control of creeping bentgrass was most effective with the double dose application of triclopyr-TEA (2 Tri-T) in the selective herbicides and the 1 / 5 dose application of glyphosate ammonium oxyflorfen (1 / 5 GAO) in the non-selective herbicides. Visual control indexes by 2 Tri-T in selective herbicides and 1 / 5 GAOin non-selective herbicides were investigated 6.0 and 7.4, respectively. Treated sites were covered completely in 50 days after seeding Kentucky bluegrass by sand injection method.

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