The pathogen,pathogenic mechanism and incidence condition of pear ring rot,and its damage on fruits,branches and leaves are summarized in the paper. The control
The morphological characteristics,pathogenicity and biological characteristics of the pathogen isolated from Maryland tobacco in Wufeng County of Hubei Province
The tea green leafhopper Empoasca vitis Gthe,one of major tea insect pests in mainland China,grows concealed with small size,rapid reproduction and overlapped