Effects of Liquid Fertilizer Produced from Fermented Clippings for Creeping Bentgrass Growth

Creeping Bentgrass의 생육을 위한 예지물 발효 액상비료의 효과

  • 김상준 (건국대학교 농축대학원 생명산업학과) ;
  • 김두환 (건국대학교 농축대학원 생명산업학과) ;
  • 이상국 (호서대학교 골프학과)
  • Received : 2011.06.27
  • Accepted : 2011.07.26
  • Published : 2011.12.31

Abstract

Organic fertilizers are divided into natural organic and synthetic organics. The benefits of natural organic fertilizer were reported from the previous researches. However, the limited research results about clippings as a source of natural organic fertilizers were reported. The objective of the research to investigate effects of liquid fertilizer produced from fermented clippings for creeping bentgrass growth. Liquid fertilizer (LF) produced was used for the research to be compared with Urea and two natural organic fertilizers of different source (NO-1 and NO-2). Creeping bentgrass (Agrostis stolonifera L., L-93) was used for the study. Turfgrass quality was measured by visual evaluation every two weeks from June to October, 2011 using a scale of 1 to 9 (1=worst, 6=acceptable, and 9=best). Turfgrass disease damage was measured by percent of area damaged when a turfgrass disease occurred. LF produced lower damage than NO and urea when temperature was high. Although NO-2 produced the highest or equal to the highest turfgrass quality in June and October, LF had the highest or equal to the highest quality from July to September.

유기질비료(Organic fertilizer)는 천연유기질(Natural organic) 비료와 합성유기질(Synthetic organic) 비료로 구분이 된다(Christians, 2011). 천연유기질비료의 장점은 그동안의 선행 연구를 통해서 많이 보고되어왔다. 그러나 예지물을 이용한 시비효과에 대한 연구결과는 제한적이다. 본 연구는 예지물을 발효시켜 제조된 천연유기질비료로서의 액상비료가 putting green에 많이 사용되고 있는 Creeping bentgrass 생육에 미치는 영향을 알아보기 위해서 수행하였다. 액상비료는 Kentucky bluegrass로부터 수거된 예지물을 모아 부숙 과정 없이 미립자로 분쇄한 후 $28^{\circ}C$에서 약 2개월간 발효시킨 후 생성된 발효액에 유용미생물(Effective Microorganism, EM) 군으로 제조된 활성액을 3% 혼합하여 제조하였다. 잔디에 대한 각 질소의 시비효과는 National Turfgrass Evaluation Program (NTEP)에서 제시한 방법에 준하여 잔디의 품질을 시각적평가를 통해 매 2주마다 조사하였다(1=worst, 9=best, and 6=acceptable). LF와 NO와의 비교에서 고온기간인 8월 20일과 9월 3일에 각각 LF가 NO에 비해 더 좋은 품질을 보여주었다. Urea가 고온기간에 비료피해가 나타난 것에 비교하여 LF의 경우 고온기간동안 비료피해가 나타나지 않았다.

Keywords

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