Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Idota Sachiko and Ishii Yasuyuki,Annual Variation in Herbage Dry Matter Yield under Some Forage Cropping Systems on the Heavy Soil in Southern Kyushu,Japanese Journal of Grassland Science,0447-5933,Japanese Society of Grassland Science,2007,53,2,93-101,https://cir.nii.ac.jp/crid/1390001205752981248,https://doi.org/10.14941/grass.53.93