Weed & Turfgrass Science

The Korean Society of Weed Science & The Turfgrass Society of Korea Archive (한국잡초학회 & 한국잔디학회)
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Mesotrione and Seeding Rate Effects to Recover Kentucky Bluegrass Contaminated by Creeping Bentgrass

Creeping bentgrass에 침입된 Kentucky bluegrass 회복을 위한 Mesotrione과 Kentucky bluegrass 덧파종 효과

  • Lee, Sang-Kook (Research Institute for Basic Sciences, Hoseo University)
  • 이상국 (호서대학교 기초과학연구소)
  • Received : 2012.11.05
  • Accepted : 2012.12.03
  • Published : 2012.12.31
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Abstract

Creeping bentgrass (Agrostis stolonifera L.) is one of the highest maintained turfgrass but often problematic especially for Kentucky bluegrass fairway. Mesotrione is one of selective herbicide that is firstly registered for corn (Zea mays L.) and provides preemergence and postemergence control of broadleaf and annual grassy weeds. Although mesotrione is effective to eradicate area contaminated by creeping bentgrass, protracted time is required to recover damaged area by rhizome extension of Kentucky bluegrass. Overseeding is typically used to fill bare or damaged areas using appropriate turf species to create a uniform turfgrass surface. The objectives of this study were to evaluate mesotrione and seeding rate effects to recover Kentucky bluegrass contaminated by creeping bentgrass. Six treatments consisted of three mesotrione rates and two Kentucky bluegrass seeding rates. The mesotrione rate were 0, 0.05 and 0.10 m $ml^{-2}$. Two seeding rate of to Kentucky bluegrass 'Midnight' were 15 and 30 g $m^{-2}$. Mesotrione application and Kentucky bluegrass overseeding at the same time is helpful to damage creeping bentgrass but not for establishment of Kentucky bluegrass to refill damaged area. To maximize mesotrione effects, temperature above $20^{\circ}C$ would be recommended based on this study.

Creeping bentgrass 는 골프장의 티나 퍼팅그린 그리고 경기장과 같이 집중관리가 요구되는 곳에 가장 많이 사용되는 잔디의 종류중 하나이기도 하지만 Kentucky bluegrass에 침입하는 방제하기 어려운 잡초이기도 하다. Mesotrione은 선택성 제초제이며 처음에 옥수수를 위해 등록이 되었으며, 광엽잡초를 방제하기 위한 발아전 혹은 발아후 제초제로 이용이 되고 있다. Mesotrione가 creeping bentgrass를 방제하기 위한 효과는 많은 선행연구에 의해 보고가 되어 왔다. Mesotrione이 creeping bentgrass 방제에 효과가 있어도 방제가 된 후 피해가 발생한 곳의 회복은 Kentucky bluegrass의 지하부와 rhizome 등에 의해 회복되기 까지는 시간이 오래 걸린다. 덧파종은 일반적으로 피해를 입은 곳을 회복 시키거나 밀도를 높이기 위해서 사용이 된다. 실험의 목적은 mesotrione과 덧파종이 Kentucky bluegrass에 침입한 creeping bentgrass를 방제하고 회복하기 위한 효과를 조사하기 위해서 수행이 되었다. 0, 0.05 and 0.10 m $ml^{-2}$의 세가지 mesotrione농도와 15와 30 g $m^{-2}$ 두가지의 Kentucky bluegrass 덧파종량의 총 6가지 처리가 적용이 되었다. Mesotrione과 Kentucky bluegrass 덧파종을 동시에 처리 하는 것은 creeping bentgrass 방제에는 효과가 있으나 Kentucky bluegrass 회복에는 효과가 나타나지 않았다. Creeping bentgrass방제 효과는 mesotrione의 처리에 의한 것이며 덧파종에 의한 것은 아닌 것으로 나타났다. Mesotrione의 효과를 극대화 하기 위해서는 본 실험결과 $20^{\circ}C$ 이상일 때가 더 효과가 좋은 것으로 판단된다.

Keywords

References

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Cited by

  1. Effects of Several Herbicides on Control of Creeping Bentgrass in the Kentucky Bluegrass and Its Recovery vol.2, pp.4, 2013, https://doi.org/10.5660/WTS.2013.2.4.395