Growth and Wear Tolerance of Creeping Bentgrass as Influenced by Silica and Potassium Fertilization

규산 및 칼리 시비에 따른 벤트그래스 생육 및 내답압성 반응

  • Kim, Yong-Seon (Turfgrass & Environment Research Institute, Samsung Everland Inc.) ;
  • Kim, Ki-Sun (Department of Plant Science, Seoul National University)
  • 김용선 (삼성에버랜드(주) 잔디.환경연구소) ;
  • 김기선 (서울대학교 식물생산과학부)
  • Received : 2012.05.02
  • Accepted : 2012.05.22
  • Published : 2012.08.31

Abstract

The study was conducted to know whether turfgrass wear tolerance, growth, and quality could be improved by the application of silicon and potassium. First, turf responses to silicate and potassium were evaluated by several parameters such as, turf visual quality, root length, shoot density, and dry weight under the field condition. Second, turf responses to traffic frequencies were examined by turf growth (root) length, shoot density and dry weight) and soil hardness under the field condition. Finally, under traffic stress condition, the effects of silica and potassium application on wear tolerance were evaluated through the methods described above. Creeping bentgrass (Agrostis stolonifera) rooting were significantly improved by silica. The root length was enhanced by an increase in potassium silicate application. Certain level of light traffic is beneficial while frequent traffic cause serious adverse effect on visual quality of bentgrass. Under a traffic stress condition with 10 times of footing a day for 30 days, silica and potassium increased turf visual quality by 6.38% and 10.25% respectively when compared to the control. Silica and potassium treatment on trafficked plot increased turf visual quality by 11.4% and 10.2% respectively in comparison with the control with significant reduction of wear injury from the traffic. A co-application of potassium silicate with potassium sulfate provided the enhanced visual quality of turf as compared to application of silica or potassium fertilizer, respectively.

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