Research on the ratio and contents of N, P, K by arecanut (Areca catechu L.) leaves in different growth conditions Biocontrol efficacy of Coniothyrium minitans strain ZS-1 on Sclerotinia stem rot of oilseed rape caused by Sclerotinia sclerotiorum in field trials Identification of the pathogen of falcate-conidia anthracnose of tobacco and its biological characteristics Isolation and identification of Fusarium proliferatum causing soybean root rot and its biological characterization Influence of planting pattern, density and fertilization on wheat powdery mildew Advances in researches sugarcane yellow leaf disease and molecular biology of Sugarcane yellow leaf virus