About TSUCHIYA YUKIO
About 農技研
About OHATA KAN'ICHI
About 農技研
About AZEGAMI KOJI
About 農技研
About 農業技術研究所報告 C 病理,昆虫
About lettuce
About Plant diseases caused by bacteria
About Plant damage caused by weeds
About レタス
About 腐敗病
About 病原細菌
About Pseudomonas
About PS
About PV
About 雑草
About 病原性