Weed & Turfgrass Science

The Korean Society of Weed Science & The Turfgrass Society of Korea Archive (한국잡초학회 & 한국잔디학회)
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Simultaneous Application of Chemicals and Temperature for the Effective Control of Trouble Seaweed Ulva australis

구멍갈파래(Ulva australis) 생육제어 효과 증진을 위한 화합물 및 고온의 복합처리

  • Kim, Jin-Seog (Research Center for Eco-Friendly New Materials, Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology) ;
  • Kim, Bo Gwan (Research Center for Eco-Friendly New Materials, Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology) ;
  • Kwak, Hwa Sook (Research Center for Eco-Friendly New Materials, Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology)
  • 김진석 (한국화학연구원 의약바이오연구본부 친환경신물질연구센터) ;
  • 김보관 (한국화학연구원 의약바이오연구본부 친환경신물질연구센터) ;
  • 곽화숙 (한국화학연구원 의약바이오연구본부 친환경신물질연구센터)
  • Received : 2018.01.19
  • Accepted : 2018.03.12
  • Published : 2018.03.31
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Abstract

The seaweed Ulva spp., which is frequently bloomed in coastal areas, have negatively affected on marine ecosystem and industrial activities. Therefore, many researches have been conducted to solve this problem in the worldwide. In this study, we carried out several experiments to develop the methods for effectively controlling Ulva growth through an alone or mixture application of chemical and temperature. Three chemical mixtures ($H_2O_2$+N-vanillylnonanamide; $H_2O_2$+nonanoic acid; $H_2O_2$+sodium citrate), those had a synergistic effect to the death of Ulva australis (ULAUS), were found out. On the other hand, the death of ULAUS was significantly enhanced and accelerated as some chemicals were briefly treated with warm water of $40^{\circ}C$ rather than $25^{\circ}C$, showing that peracetic acid 100 ppm, sodium percarbonate 100 ppm, and hydrogen peroxide 30 ppm has a better activity than that of sodium chlorite 200 ppm and menadione sodium bisulfite 4 ppm. In addition, a strong synergistic effect to the death of ULAUS thallus was also observed when the sodium citrate 1,000 ppm (pH 3.0) or acetic acid 200 ppm (pH 3.5) solution prepared in f/2 medium were treated in a short time at $40^{\circ}C$. However, an additive effect was only appeared as pH values of their solutions were increased to 8.0. Taken together, It seemed that our results could be developed as one of an eco-friendly practical measures useful for alleviating Ulva bloom in the future.

갈파래 속(Ulva spp.) 해조류는 연안에서 자주 대발생되어 생태환경과 산업활동에 여러 가지 문제를 일으키기 때문에 이를 해결할 수 있는 방안이 요구된다. 본 연구에서는 화합물과 온도를 이용하여 구멍갈파래(Ulva australis, ULAUS)의 대발생 경감에 보다 효과적으로 활용될 수 있는 기술을 확립하고자 연구를 수행하였다. 그 결과, 화합물간의 혼합처리에 의해 각각의 단독처리보다도 ULAUS 엽상체 고사에 있어서 상승효과를 나타내는 혼합물 조합 3건($H_2O_2$+N-vanillylnonanamide; $H_2O_2$+nonanoic acid; $H_2O_2$+sodium citrate)을 탐색하였다. 아울러, peracetic acid 100 ppm, sodium percarbonate 100 ppm, hydrogen peroxide 30 ppm, sodium chlorite 200 ppm, menadione sodium bisulfite (MSB) 4 ppm 처리 시 $25^{\circ}C$보다는 $40^{\circ}C$의 온수로 처리할 때, ULAUS 사멸을 현저하게 증진시킬 뿐만 아니라 보다 빠른 시간 내에 고사시키는 효과를 나타내었다. 공시된 화합물 중에서 peracetic acid, sodium percarbonate, hydrogen peroxide가 보다 좋은 효과를 보였다. 마찬가지로 $40^{\circ}C$ 온수에 sodium citrate 1,000 ppm (pH 3.0) 또는 acetic acid 200 ppm (pH 3.5)을 처리할 때에도 ULAUS 엽상체 고사에 상승적 작용을 보였는데 이들 화합물 용액 산도(pH)를 8.0으로 하였을 때에는 상가적 작용을 나타냈다. 따라서 이들 결과는 향후 환경 친화적으로 갈파래 대발생을 제어하기 위한 실용화 기술 중의 한 가지로서 발전시킬 수 있을 것으로 사료된다.

Keywords

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