About IKEDA SACHIKO
About 道総研 北見農試
About potato
About phytophthora rot
About pest control
About effect
About foliar spray
About leaf
About cultivation
About germicide
About potato
About chemical control
About control effect
About foliar spray
About stem leaf
About crop cultivation
About germicide
About Chemical pest control
About Tubers(=corms)
About 栽培
About 馬鈴しょ
About 疫病
About 防除