About TAKEBE MASAKO
About 北海道農試
About HOSODA YOICHI
About 青森県畑作園試
About KASAHARA YOSHIAKI
About 北海道農試
About KARASAWA TOSHIHIKO
About 北海道農試
About 日本土壌肥料学雑誌
About potato
About Tubers(=corms)
About Plant nutrition
About バレイショ
About 葉柄
About 汁液
About 栄養
About 診断