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.

Abstract
1. 서 론
2. 재료 및 방법
3. 결과 및 고찰
4. 결 론
감사의 글
REFERENCE

• 오명협(제주특별자치도 농업기술원) | Myung-Hyup Oh (Jeju Special Self-governing Province Agricultural Research and Extension Services)
• 박원표(제주대학교 식물자원환경전공) | Won-Pyo Park (Major Plant Resoures and Environment, Jeju National University)
• 현해남(제주대학교 식물자원환경전공) | Hae-Nam Hyun (Major Plant Resoures and Environment, Jeju National University) Corresponding author