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土壌のPH価がスイートピー及びチューリップの生育開花に及ぼす影響 Studies on the Growth and Flower Production of Sweet Peas and Tulips at Various pH Values SAKANISHI, Yoshihiro 阪西, 義洋 application/pdf 1. Winter-flowering sweet peas and tulips were observed to determine the response of their growth habit and flower production to soil reaction. 2. Sweet peas and tulips grew best and produced the larger number of flowers of good quality at pH 6.7-7.0, and in the soils of excessive acidity or in the high lime soils they became dwarfed or die. 3. Sweet peas developed symptoms of phosphorous deficiency at pH 7.9 or at the plots lower than pH 5.0. Tulips grown at pH 6.8 were first to bloom, and that is profitable to the forcing. 4. The use of a pretty deal of hydrated lime on the cultivation of sweet peas and tulips is required if the soils tend to become acid. Bulletin of the University of Osaka Prefecture. Ser. B, Agriculture and biology. 1955, 5, p.19-25 University of Osaka Prefecture 1955-12-25 eng departmental bulletin paper VoR https://doi.org/10.24729/00009639 http://hdl.handle.net/10466/2736 https://omu.repo.nii.ac.jp/records/9646 10.24729/00009639 AA00106812 Bulletin of the University of Osaka Prefecture. Ser. B, Agriculture and biology 5 19 25 https://omu.repo.nii.ac.jp/record/9646/files/KJ00004350476.pdf application/pdf 428.7 kB 2019-07-31