FLOWER RESEARCH JOURNAL (화훼연구)

The Korean Society for Floricultural Science (한국화훼학회)
권호 표지

Effect of Phosphate Solubilizing Bacteria Application on Soil Chemical Properties and Chrysanthemum Growth in Greenhouse Cultivation Area with High Salt Accumulation

염류집적 국화 시설재배지 토양에서 인산분해미생물 시용이 토양화학성 및 국화생육에 미치는 영향

  • Lee, Sang-Hyun (Korean Pear Research Organization, Chonnam National University) ;
  • Joung, Youn-Hwa (Department of Horticulture, Chonnam National University) ;
  • Han, Tae-Ho (Department of Horticulture, Chonnam National University)
  • Received : 2011.09.09
  • Accepted : 2011.09.20
  • Published : 2011.09.30
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Abstract

This study was carried out to develop the soil amendment practice by phosphate solubilizing bacteria application in greenhouse chrysanthemum cultivation area with high salt accumulation. The experimental site (ShinWoo Flower, GwangJu) has been cultivated chrysanthemum for 15 years and showed significant salt accumulation. The phosphate solubilizing bacteria, Pseudomonas putida (KSJ11), Acinetobacter calcoaceticus (KSJ3) and Acinetobacter calcoaceticus (WP20) formulated on vermiculite for easy use, were applicated. Each 250L of phosphate solubilizing bacteria was applied for $82m^2$ before planting. Acinetobacter calcoaceticus (KSJ3; WP20) increased the amount of soluble phosphorus in an effective level. Particularly, Acinetobacter calcoaceticus (WP20) increased not only the level of soluble phosphorus but also potassium, calcium and magnesium resulting in the increase of EC in the soil. The level of nematode was also decreased with the non-treated increased. As a result, we suggest that selected phosphate solubilizing bacteria (WP20) could be a useful practice for soil amendment in chrysanthemum plantation soil and provided an opportunity to reduce the use of the fertilizer during the cultivation period.

본 연구는 염류집적 국화 재배지 토양적응성 인산분해미생물 탐색하고 선발된 미생물 시용을 통한 염류집적 국화 재배지 토양에서의 토양 화학성의 변화를 조사하였으며 이를 통하여 염류집적 국화 재배지 토양 환경 개선 기술을 개발하고자 수행되었다. 시험에 사용된 인산분해미생물은 염류집적토양에서 분리된 Pseudomonas putida(KSJ11), Acinetobacter calcoaceticus (KSJ3) 및 Acinetobacter calcoaceticus (WP20) 3종류이었으며 미생물의 제형은 버미큘라이트에 혼합되어 있는 상용화된 제품을 이용하였다. 시험장소는 광주광역시 광산구 소재 신우화훼농장의 15년간 작물이 재배되어 염류집적현상이 나타나는 국화재배지에서 처리구 $82m^2$에 각각의 미생물 제재 250 L씩 시용하였다. 염류집적이 이루어진 국화재배온실에 처리된 인산분해미생물 Acinetobacter calcoaceticus(KSJ3; WP20)는 유효인산을 효율적으로 분해하는 것으로 나타났으며, 특히 Acinetobacter calcoaceticus(WP20)는 염류의 분해능력이 높았다. 인산분해미생물 시용에 따라 토양내 칼륨, 칼슘 및 마그네슘의 함량의 증가가 A. calcoaceticus(KSJ3; WP20)처리구에서 뚜렷하게 나타났으며 이러한 변화의 영향으로 판단되는 토양내 전기전도도도 증가되었다. 또한 인산분해미생물 시용은 선충밀도의 감소효과를 나타내어 토양환경개선을 위한 재료로 활용될 가능성을 나타내었다. 결과적으로 염류집적이 이루어진 국화재배 온실에서의 인산분해미생물 시용은 처리된 미생물의 종류에 따라 차이를 나타내었지만 토양의 유효인산량 증가와 양이온의 유용화에는 분명한 효과를 나타내었다. 따라서 염류집적 토양에서의 인산분해미생물 시용은 토양양분의 효율적인 사용을 가능하게 할 수 있는 방안이 될 수 있기 때문에 시비량 절감 등의 방법으로 활용할 수 있다고 판단되었다.

Keywords

Acknowledgement

Supported by : 농촌진흥청

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