Asian Journal of Turfgrass Science (아시안잔디학회지)

Turfgrass Society of Korea (한국잔디학회)
권호 표지

Effect of Polymer, Calcium, Perlite and Chitosan in Soil Organic Amendment on Growth in Perennial Ryegrass

유기질 토양개량재에서 고분자 중합체, 칼슘, 펄라이트 및 키토산이 퍼레니얼 라이그래스의 생장에 미치는 효과

  • Kim, Kyoung-Nam (Dept. of Horticulture, College of Science and Technology, Sahmyook University)
  • 김경남 (삼육대학교 과학기술대학 원예학과)
  • Received : 2011.12.24
  • Accepted : 2012.01.29
  • Published : 2012.04.30
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Abstract

The study was carried out to investigate the effects of polymer, calcium, perlite and chitosan on the growth of perennial ryegrass (Lolium perenne L., PR) and to provide a basic information needed for their practical application when establishing garden, parks, athletic field and golf courses with these materials. A total of 24 treatment combinations were applied in the study. Treatments were made of water-swelling polymer (WSP), calcium, perlite and chitosan mixed in soil organic amendment (SOA). Germination rate, turfgrass coverage, turfgrass density and top growth were evaluated in PR under greenhouse conditions. Significant differences were observed for these growth characteristics among the treatments. Turfgrass density and plant height, evaluated on a weekly basis, varied with time after seeding. A proper mixing rate of WSP was considered to be lower 3% for the growth of PR with an exception of being below 6% for turfgrass density. Germination rate and early survival capacity were greatly influenced by calcium and chitosan among the elements of calcium, perlite, and chitosan. But there was little effect by perlite. Calcium and chitosan were most effective one for turfgrass density and coverage, respectively. Top leaf-growth was influenced by all three elements, but the greatest effect was highly linked with calcium. Chitosan was very effective in early germination and vertical leaf growth, as compared with the others. Future studies are required for measuring the effect of WSP, calcium, perlite and chitosan on the turf growth characteristics in root zone mixtures of sand+SOA before a practical field use.

본 연구는 유기질 토양개량재(SOA, soil organic amendment)에서 수분 중합체(WSP, water-swelling polymer), 칼슘, 펄라이트 및 키토산 성분이 퍼레니얼 라이그래스의 생장에 미치는 영향을 조사함으로 정원, 공원, 잔디구장 및 골프장 조성 시 이들 소재를 이용한 혼합개량재를 실무에 활용할 수 있는 기초자료를 얻기 위해 수행하였다. 전체 24개 처리구는 SOA 유기질개량재에 WSP 중합체, 칼슘, 펄라이트 및 키토산 성분을 이용하여 준비하였다. 온실에서 자란 퍼레니얼 라이그래스에서 WSP 중합체, 칼슘, 펄라이트 및 키토산 성분에 따른 잔디생존력, 피복율, 잔디밀도 및 지상부 생장을 조사한 결과 유의한 차이가 나타났다. 그리고 파종 후 1주일 간격으로 조사한 잔디밀도 및 초장은 이들 성분에 따라서 경시적인 변화가 크게 나타났다. SOA 유기물개량재에서 잔디생존력, 피복율 및 지상부 생장에 대한 WSP 중합체 효과는 혼합비율이 0~3% 사이가 적절한 것으로 판단되었다. 하지만 잔디밀도의 경우 WSP 중합체 혼합비율은 0~6% 사이가 적절하였다. 칼슘, 펄라이트 및 키토산 성분 중 칼슘 및 키토산 성분이 퍼레니얼 라이그래스의 생존에 가장 효과적이었다. 하지만 펄라이트 성분은 초기발아 및 생존력에 효과가 거의 없는 것으로 판단되었다. 퍼레니얼 라이그래스의 피복율에 가장 효과적인 성분은 키토산이었으며, 반면 잔디밀도는 칼슘 성분이 가장 효과적이었다. 그리고 펄라이트 성분은 피복율 및 잔디밀도에 거의 효과가 없는 것으로 나타났다. 퍼레니얼 라이그래스의 지상부 엽생장에 칼슘, 펄라이트 및 키토산 성분 모두 효과가 나타났으며, 이중 칼슘 성분의 효과가 가장 크게 나타났다. 특히 키토산 성분은 칼슘 및 펄라이트 성분에 비해 초기 발아 및 지상부 엽 조직의 수직생장을 촉진시키는 효과가 있었지만, 잔디분얼 및 수평생장 촉진 효과는 나타나지 않았다. 향후 실무에 적용할 수 있는 토양개량재 혼합구(모래+SOA 혼합구)에서 WSP 중합체, 칼슘, 펄라이트 등 무기 영양분이 잔디생육에 대한 추가 검정실험을 통해 WSP 중합체 및 무기영양분을 이용한 토양개량재의 개발 및 실무 응용에 활용하는 것이 바람직하다.

Keywords

References

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