About IGWE C.A.
About Univ. Nigeria
About AGHARANYA K.U.
About Univ. Nigeria
About NWITE J.C.
About Univ. Nigeria
About OBALUM S.E.
About Univ. Nigeria
About OBALUM S.E.
About Kinki Univ.
About WATANABE Y.
About Kinki Univ.
About WAKATSUKI T.
About Kinki Univ.
About 日本土壌肥料学会講演要旨集
About Federal Republic of Nigeria
About impounding
About paddy field
About organic carbon
About soil component
About soil structure
About aggregate(material)
About valley
About shale
About chemical fertilizer
About chicken dropping
About ash
About field experiment
About sandy
About loam
About particle size(ratio)
About tillage
About soil aggregate
About soil nitrogen
About soil organic carbon
About RHA
About Soil chemistry
About Rice cropping
About ナイジェリア
About 水稲
About 土壌
About 団粒
About 会合
About 土壌有機炭素
About 全窒素