Effectiveness of bio-medicaments against oat powdery mildew

• SUN Haoyang, 
• ZHANG Weiwei, 
• ZENG Liang, 
• CHAI Jikuan, 
• JIAO Run’an, 
• JIN Xiaowen, 
• GONG Wenlong, 
• LI Rong, 
• ZHAO Guiqin