The Effect of Developed SCB Liquid Fertilizer on the Growth of Kentucky Bluegrass

성분이 추가된 SCB저농도액비가 켄터키블루그래스의 생육에 미치는 효과

  • Received : 2011.05.23
  • Accepted : 2011.06.15
  • Published : 2011.06.30

Abstract

This study was conducted to evaluate the effect of developed SCB (DSCB) liquid fertilizer produced by adding N, P and K at SCB liquid fertilizer on the growth of kentucky bluegrass. Two different N sources used in DSCB were ammonium sulfate (DSCB-A) and urea (DSCB-U), respectively. Fertilizer treatments were designed as follows; non-fertilizer (NF), control (CF; chemical fertilizer), DSCB-A1 ($200\;ml{\cdot}m^{-2}$DSCB-A), OSCB-A2 ($250\;ml{\cdot}m^{-2}$DSCB-A), OSCB-U ($250\;ml{\cdot}m^{-2}$DSCB-U) and CF+SCB (CF+$250\;ml{\cdot}m^{-2}$SCB). Every treatment was arranged in a randomized complete block design with three replications. In kentucky bluegrass, turf color index, chlorophyll index, dry weight and nutrient contents were measured. Results were as follows; It was hardly affected by DSCB and SCB application in investigation of chemical properties of soil. Turf color index and chlorophyll index in DSCB and SCB treatments were increased by 1~2% and 19~24% than NF, respectively and similar to CF. As applied with DSCB and SCB, dry weight of DSCB-U and CF+SCB was increased by 36% and 10% than CF, respectively, but similar to that of OSCB-A1 and DSCB-A2. Evaluated with turf quality and growth, DSCB-U was the best in all treatment and OSCB-A1 the most efficient. These results indicated that applications of OSCB and SCB promoted turf quality and growth of kentucky bluegrass or similar to CF, so that they were expected to replace chemical fertilizers.

본 연구는 SCB 저농도액비에 질소, 인산, 칼륨 성분을 첨가한 개량SCB액비(DSCB)의 시비에 따른 켄터키블루그래스의 생육에 미치는 영향을 평가하기 위해 수행되었다. 처리구는 비료의 종류와 시비량에 따라 무처리구(NF), 화학비료를 시비한 대조구(CF), 유안으로 질소성분을 보정한 DSCB를 80% 시비한 처리구 1(DSCB-A1), 유안으로 질소성분을 보정한 DSCB를 100% 시비한 처리구 2(DSCB-A2), 요소로 질소성분을 보정한 DSCB처리구(DSCB-U) 그리고 대조구에 SCB를 시비한 처리구(CF+SCB)로 설정하였고, 각 처리구는 난괴법, 3반복으로 수행하였다. 엽색지수, 엽록소지수, 건물중 및 잔디의 양분함유량을 조사하였다. 시험 전후 토양분석결과, 처리구에 따른 토양화학성의 변화는 나타나지 않아 DSCB와 SCB의 시비가 골프코스의 토양화학성의 변화에 영향을 미치지 않음을 확인하였다. 엽색지수와 엽록소지수를 조사한 결과, NF보다 각각 1~2%와 19~24% 증가하였고, CF와는 비슷하였다. CF와 비교할 때, 잔디생육량은 CF와 비교할 때, DSCB-A1와 DSCB-A2는 CF와 비슷한 결과를 나타내었고, DSCB-U와 CF+SCB는 각각 36%와 10% 증가하여 DSCB-U와 SCB처리에 의해 잔디생육량이 증가하였다. 잔디품질과 잔디생육이 가장 우수한 처리구는 DSCB-U였고, 시비효율이 가장 우수한 처리구는 DSCB-A1이었다. 이러한 결과들을 통해 켄터키블루그래스에서 DSCB의 시비는 화학비료와 비슷하거나 양질의 잔디품질을 보여 골프코스관리에서 DSCB가 화학비료를 대체할 수 있을 것으로 기대되었다.

Keywords

References

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