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1941Volume 15Issue 6 Pages
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1941Volume 15Issue 6 Pages
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1941Volume 15Issue 6 Pages
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Shuji MORITA
Article type: Article
1941Volume 15Issue 6 Pages
365-376
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Ehime prefecture is a chief district of citrus production in Japan. Author studied the soil profiles of citrus garden in this prefecture. The results obtained with regard to their mechanical and chemical properties are briefly summarized as follows : 1. Soils were clasified into clay loam, loam and sandy loam, and sandy loam and sandy loam soil with much gravel. 2. SiO_2-Al_2O_3 ratio of clay fraction was 4.14〜2.96 in surface soil and no remarkable difference was found in deeper horizon. 3. Humus and nitrogen contents were low in surface soil and was decreased with deeper horizon. C : N ratio was 18〜10 in surface soil also narrower in deeper horizon. Available phosphoric acid was very low in each horizon. Available potash was not so low as phosphoric acid. Following table shows these contents in surface soil.[table]4. pH value was 5〜6. Exchangeable base was generally insufficient, i.e., Ca 5.49,Mg 3.64,K 0.48,Na 0.89 m.e./100 g. on an average. Ca occupied the most part of bases in surface soil, but the proportion of Ca was decreased and that of Mg increased with depth. Saturation degree of surface soil was 44.90〜11.99.
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Takeo NAGATA
Article type: Article
1941Volume 15Issue 6 Pages
377-380
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Takeo NAGATA
Article type: Article
1941Volume 15Issue 6 Pages
381-384
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Matsuo TOKUOKA, Suisen DYO, Hidetatsu UOKAWA
Article type: Article
1941Volume 15Issue 6 Pages
385-392
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Es wurde der Einfluss des Kupfers auf das Wachstum und den Ertrag der Bergreispflanzen durch Gefassversuch untersucht. Der Boden ist feinlehmiger mit pH 6.7 und die Varietat der Pflanzen ist Urazo. Die Vegetationszeit dauert 1. IV, 1949-19. VIII, 1940. Das Kupfer wurde als Sulfat zugegeben, und die Kupfermenge varierte sich von 0. 1 bis 50 v. M. (p. p. m.). Im allgemeinen haben die Kupfergabe von bis 20 v. M. einen guten Einfluss gezeigt. Die Kupfergabe daruber bis 30 v. M. ist schon teilweise nachteilig. Bei 40 v. M. ist die Schadigung sehr betrachtlich.
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[in Japanese]
Article type: Article
1941Volume 15Issue 6 Pages
393-396
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[in Japanese]
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1941Volume 15Issue 6 Pages
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[in Japanese]
Article type: Article
1941Volume 15Issue 6 Pages
398-399
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[in Japanese]
Article type: Article
1941Volume 15Issue 6 Pages
399-400
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[in Japanese]
Article type: Article
1941Volume 15Issue 6 Pages
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[in Japanese]
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1941Volume 15Issue 6 Pages
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[in Japanese]
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1941Volume 15Issue 6 Pages
401-402
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[in Japanese]
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1941Volume 15Issue 6 Pages
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[in Japanese]
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1941Volume 15Issue 6 Pages
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[in Japanese]
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1941Volume 15Issue 6 Pages
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Article type: Article
1941Volume 15Issue 6 Pages
403-
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[in Japanese]
Article type: Article
1941Volume 15Issue 6 Pages
403-404
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[in Japanese]
Article type: Article
1941Volume 15Issue 6 Pages
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1941Volume 15Issue 6 Pages
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1941Volume 15Issue 6 Pages
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Article type: Article
1941Volume 15Issue 6 Pages
405-406
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Article type: Article
1941Volume 15Issue 6 Pages
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[in Japanese]
Article type: Article
1941Volume 15Issue 6 Pages
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Article type: Article
1941Volume 15Issue 6 Pages
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[in Japanese]
Article type: Article
1941Volume 15Issue 6 Pages
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1941Volume 15Issue 6 Pages
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[in Japanese]
Article type: Article
1941Volume 15Issue 6 Pages
407-408
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[in Japanese]
Article type: Article
1941Volume 15Issue 6 Pages
408-
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1941Volume 15Issue 6 Pages
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1941Volume 15Issue 6 Pages
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1941Volume 15Issue 6 Pages
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1941Volume 15Issue 6 Pages
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1941Volume 15Issue 6 Pages
409-410
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1941Volume 15Issue 6 Pages
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1941Volume 15Issue 6 Pages
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1941Volume 15Issue 6 Pages
410-
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[in Japanese]
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1941Volume 15Issue 6 Pages
410-
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Article type: Appendix
1941Volume 15Issue 6 Pages
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1941Volume 15Issue 6 Pages
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Article type: Cover
1941Volume 15Issue 6 Pages
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1941Volume 15Issue 6 Pages
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