About IDO AKIFUMI
About fertilization(cultivation)
About Tottori prefecture
About nitrogen fertilizer
About basal fertilization
About solution culture
About nitrate nitrogen
About nutrient absorption
About lysimeter
About run off
About field experiment
About weight(gravity)
About color
About fruit
About sugar content
About branch
About plant growth
About field study
About quality
About Pyrus pyrifolia
About fruit quality
About fruit weight
About fruit color
About 元肥
About new branch
About 日本ナシ
About Fruit trees
About Fertilizer application and efficiency
About 品質安定
About 肥培管理
About 日本
About ナシ
About 施肥