Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)
- Volume 21 Issue 1
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- Pages.61-71
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- 1988
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- 0367-6315(pISSN)
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- 2288-2162(eISSN)
Effects of Pesticides on Soil Microflora II. Effects of Herbicides on Microflora and Enzyme Activity in Soil
농약(農藥)의 토양미생물상(土壤微生物相)에 미치는 영향(影響)에 관(關)한 연구(硏究) II. 제초제(除草劑)가 토양중(土壤中)의 미생물(微生物)과 효소활성(酵素活性)에 미치는 영향(影響)
- Kim, Kwang-Sik (Chonnam National Univ.) ;
- Kim, Yong-Woong (Chonnam National Univ.) ;
- Kim, Ji-Ae (Chonnam National Univ.) ;
- Kim, Hyun-Woo (Chonnam National Univ.)
- Published : 1988.03.31
Abstract
This study was conducted to find out the effect of herbicides on soil micro-organism and soil enzyme in loam soil, and on pathogenic microorganism in continuous pepper cropping soil. The result was summarized as follows: When herbicides were treated, the number of soil microorganism generally decreased at the early stage of incubation, and gradually increased at 30 days incubation. The number of fungi was significantly decreased seven times comparison with control plot. The number of actinomycetes was increased at 20 days incubation and that of pytium was increased for all days incubation in Linuron treatment plot. Although the activity of soil enzyme tended to decrease when herbicides were treated, the activities of urease and phosphatase were higher than that of control plot at the early stage of incubation in MO, Linuron and Simetryne treatment plot. In Simetryne treatment plot, the activity of protease was increased at the early stage, and suddenly decreased after 30 days incubation. There was no significant effect of herbicides on the activities of
제초제(除草劑)가 밭토양(土壤) 및 고추연작지토양(連作地土壤)의 미생물상(微生物相)의 균수변화(菌數變化)와 효소활성(酵素活性)에 미치는 영향(影響)을 조사(調査)하여 얻은 결과(結果)는 다음과 같다. 미생물(微生物)의 수(數)는 Pythium속균(屬菌)을 제외(除外)한 Actinomycetes, Bacteria, Fungi 및 Fusarium속균(屬菌)의 경우 약제처리(藥劑處理)에 의해 일반적(一般的)으로 감소(減少)하다가 30일(日)경부터는 대조구(對照區)와 비슷한 수준(水準)이었다. 특히 fungi는 2~10일(日)에 약 7배(倍)의 현저한 감소(減少)를 보였고 Actinomycetes는 Linuron처리시(處理時) 20일(日)에 대조구(對照區)보다 증가(增加)하였다. 한편 Pythium속균(屬菌)은 초기(初期)부터 균수(菌數)가 증가(增加)하는 경향(傾向)이었다. 효소활성(酵素活性)은 시일(時日)이 경과(經過)함에 따라 활성(活性)이 감소(減少)하는 경향(傾向)이었으나 Urease와 Phosphatase는 MO, Linuron 및 Simetryne 처리시(處理時) 6일(日) 및 10일(日)에 대조구(對照區)보다 높은 활성(活性)을 보이고 Protease는 Simetryne 처리구(處理區)에서 높은 활성(活性)을 보였으나 30일이후(日以後)에는 급격히 감소(減少)하였다.
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