Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Usuki Kazuei and Muro Takato,Effect of Timing of Nitrogen and Potassium Application in Combination with Local Application of Calcium Superphosphate on the Growth and Yield of Direct-seeded Onions (Allium cepa L.),Horticultural Research (Japan),1347-2658,THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE,2018,17,4,405-413,https://cir.nii.ac.jp/crid/1390282763081814656,https://doi.org/10.2503/hrj.17.405