Microbial agent for prevention of Powdery mildew comprising Bacillus subtilis R2-1

摘要

PURPOSE: A microbial agent containing Bacillus subtilis R2-1 or a culture medium thereof for preventing powdery mildew, and a prevention method using the same are provided to effectively prevent powdery mildew with an eco-friendly method. CONSTITUTION: A microbial agent for preventing powdery mildew contains Bacillus subtilis R2-1(deposit number: KACC 91542P) or a culture medium thereof. The culture medium contains rice or barley. The culture medium also contains: a liquid fertilizer of fish amino acid, humic acid, and molasses in a ratio of 1:8-12:8-12, or a liquid fertilizer of fish amino acid, glucose, and molasses in a ratio of 1:3-7:8-12; 1-3 wt% of molasses, 0.1-3 wt% of glucose, and 0.01-0.5 wt% of soytone; and an organic fertilizer which contains 4-6 wt% of nitrogen, 1-3 wt% of phosphoric acid, 0.3-2 wt% of potassium(40-50 wt% of caster bean waste, 30-50 wt% of rape seed waste, 8-12 wt% of rice bran, and 3-7 wt% of palm waste). The microbial agent prevents Rhizoctonia solani, Phytophthora capsici, Fusarium oxysporum, or Colletotrichum acutatum. A method for preventing powdery mildew includes a step of treating a plant with the microbial agent. Powdery mildew is caused by Leveillula taurica or Erysiphe cichoracearum. [Reference numerals] (AA) Non-treated; (BB) Weight(g) per week; (CC) Number(piece) per week