About MATSUMOTO TATSUYA
About 新潟県農業総合研 園芸研究セ
About Pyrus pyrifolia
About cultivation management
About soil management
About fertilization(cultivation)
About disorder/trouble/obstacle
About plant disease
About freezing damage
About performance
About hardness
About physical properties of soil
About rotational upland field
About drainage(water)
About soil component
About nursery stock
About scab
About pathogen control
About orchard
About Japanese pear
About underdrainage
About upland field converted from paddy
About physiological disorder
About soil environment
About soil hardness
About drainage performance
About Fruit trees
About 果樹園
About ポイント
About 日本
About ナシ