Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Yamamoto Futami and Matsumaru Tsuneo,Effects of Nitrogen Fertilizer Levels as Related to Application Method in Chain Pot System by Using Release Controlled Fertilizer and Topdressing for Summer Welsh Onion,Japanese Journal of Soil Science and Plant Nutrition,0029-0610,Japanese Society of Soil Science and Plant Nutrition,2007,78,2,179-186,https://cir.nii.ac.jp/crid/1390001206557000192,https://doi.org/10.20710/dojo.78.2_179