Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Effects of Using Bio-Sulfur on Open Field Citrus Melanose (Diaporthe citri) and Panonychus citri

바이오 황의 노지 감귤 검은점무늬병 및 귤응애에 대한 효과

  • Oh, Myung-Hyup (Jeju Special Self-governing Province Agricultural Research and Extension Services) ;
  • Park, Won-Pyo (Major Plant Resoures and Environment, Jeju National University) ;
  • Hyun, Hae-Nam (Major Plant Resoures and Environment, Jeju National University)
  • 오명협 (제주특별자치도 농업기술원) ;
  • 박원표 (제주대학교 식물자원환경전공) ;
  • 현해남 (제주대학교 식물자원환경전공)
  • Received : 2020.09.25
  • Accepted : 2020.10.14
  • Published : 2020.10.31
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Abstract

In this study, we investigated the effects of the eco-friendly chemical bio-sulfur, on the citrus melanose-causing pathogen, Diaporthe citri, and on the pest, Panonychus citri. In an open field experiment with a plot-scale application of the chemicals: Mancozeb, lime sulfur, lime sulfur + machine oil, and bio-sulfur, the control group showed 70.6% disease severity compared with 10.3% for the Mancozeb-treated group. Among the eco-friendly treatments, disease severity was the lowest for the group treated with lime sulfur + machine oil (32.2%) and was 53.9%, 58.8%, and 58.1% following treatment with lime sulfur, and bio-sulfur diluted 500 and 1000 times, respectively. The proportion of diseased fruit showed similar results, suggesting that bio-sulfur is an effective alternative to lime sulfur. Three days after treatment acaricidal effects on P. citri showed a 197.6% control survival rate whereas the machine oil, and bio-sulfur diluted 500 and 1000 times treatments showed rates of 2.9%, 5.8%, and 9.0%, respectively. After three days, the control value for bio-sulfur diluted 1000 times was 73.2% compared with the values for the machine oil (96.4%) and bio-sulfur diluted 500 times (94.6%) treatments. Therefore, we suggest that additional research is needed on the combined application of bio-sulfur and oils to enhance the additive control effect on citrus melanose and Panonychus citri.

Keywords

References

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