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Volume 25 (1954)
- Issue 6 Pages 1-
- Issue 5 Pages 191-
- Issue 4 Pages 145-
- Issue 3 Pages 97-
- Issue 2 Pages 49-
- Issue 1 Pages 1-
Predecessor
Volume 25, Issue 4
Displaying 1-26 of 26 articles from this issue
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Article type: Cover
1954 Volume 25 Issue 4 Pages Cover1-
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESSDownload PDF (114K) -
Article type: Cover
1954 Volume 25 Issue 4 Pages Cover2-
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESSDownload PDF (114K) -
Article type: Appendix
1954 Volume 25 Issue 4 Pages App1-
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
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Yoshiaki ISHIZUKA, Yasuo HAYAKAWAArticle type: Article
1954 Volume 25 Issue 4 Pages 145-153
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESSThe soil of Kushiro and Nemuro district has comparatively high productivity immediately after reclamation, but when 5〜6 years have elapsed after reclamation it suddenly looses the productivity. So, in order to make clear the reason and find out the fundamental course to maintain the productivity, writers collected many soils from reclaimed land according to the space of time after reclamation and determined their physical and chemical properties; we obtained the following conclusions : 1) Both exchange acidity and hydrolytic acidity are high in 1〜2 years after reclamation, then decrease gradually until 4 years after reclamation then keep the same level. In general, hydrolytic acidity is very high compared with exchange acidity. 2) Fixation of phosporic acid is very high. Silica-alumino ratio decreases gradually after the lapse of one year after reclamation. Accordingly the power of soil to fix phosphoric acid increases. This process differs fundamentally from the process reported previously by other investigators. 3) The content of nitrogen, especially easily decomposable nitrogen, decreases markedly 5〜6 years after reclamation. The same tendency was observed in respect to humus content. 4) The exchange capacity is high immediatly after reclamation, then gradually becomes less and keeps at an equilibrium state 5〜6 years after reclamation. 5) When fertile fields were dressed with farmyard manure every year after reclamation, the tendencies described above were not remarkable.View full abstractDownload PDF (4429K) -
Keizaburo KAWAGUCHI, Yoshiro MATSUOArticle type: Article
1954 Volume 25 Issue 4 Pages 154-158
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESSAccording to the results of our research, hydrofluoric acid method was favourably compared to sodium carbonate fusion method for the determination of total iron, manganese and titanium in soils. Procedure of HF treatment is as follows : Take about 5 g of air dry fine soil (<2 mm) into an agate-mortar and crush it thoroughly. And then, take 200.0mg from it. Put it into a platinum-evaporating dish. Place it on a wirenetting asbestos in a draught. Add 5 ml of 1 : 5 H_2SO_4 and 5 ml of 40% hydrofluoric acid. Heat and evaporate gently to dryness, and ignite the evaporating-dish for a minuite to decompose the residue of organic matter. Repeat it until all the silicate would be decomposed. Usually, these two treatments should be enough. Evaporate it, but it should not be ignited this time, because the residue would become insoluble. Add 20 ml of 1 : 5 H_2SO_4 and boil it to dissolve the residue. Pale yellowish solution is obtained. Make it up to a definite volume. This solution is adapted directly to determine the total iron in soil by the titration with N/1OO standard mercurous nitrate. Further, it is applied to determine the total manganese and titanium colorimetrically. Procedure of Na_2CO_3 fusion was carried out as the usual method. Summary : 1. The crusibles used for Na_2CO_3 fusion were made of Pt, Ni and Al_2O_3,and among them Ni-crusible was suitable for the Na_2CO_3fusion. 2. This method (HF treatment-HgNO_3 titration method) was more convenient and rapid than the fusion method to determine the total iron in soils, and more reliable because iron and SiO_2 do not remain in Pt-evaporating dish.View full abstractDownload PDF (2256K) -
[in Japanese]Article type: Article
1954 Volume 25 Issue 4 Pages 158-
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
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Taneo OGIHARA, Kenjiro TAKEFUJIArticle type: Article
1954 Volume 25 Issue 4 Pages 159-162
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESSOne of the main cause for "Akiochi" is owing to the absorptive condition of nitrogen in the several stage of rice growth. Namely, normal rice plants usualy absorb nitrogen slowly and continuously through life. But "Akiochi" rice are not so. The organic manure such as fish meals and oil cakes are excellent for preventation of "Akiochi". But these manures cannot be produced so much and cheaply. Accordingly, there is necessity of inorganic nitrogen fertilizer with the characteristics absorbed slowly by rice. This is the purpose of this study. The result summarized as follows : 1. Massed calcium cyanamide are made from calcium cyanamide by adding Na-Silicate aq. and this fertilizer contains 16% N. 2. Ammonification of massed calcium cyanamide in the paddy soil is rather slow and continious than calcium cyanamide. 3. Massed calcium cyanamide prevented the "Akiochi", and obtained the higher yields than calcium cyanamide or ammonium sulphate. 4. Massed calcium cyanamide did not appear to injure the rice, even if transplanted immediately after dressing. 5. Roots colour of rice which grew up with the massed calcium cyanamide were more reddish brown and healthy than others. 6. Massed calcium cyanamide existed in the soil still at harvest time, and contained 1.7% N.View full abstractDownload PDF (1970K) -
[in Japanese]Article type: Article
1954 Volume 25 Issue 4 Pages 162-
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
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Yoshiaki ISHIZUKA, Akira TANAKAArticle type: Article
1954 Volume 25 Issue 4 Pages 163-168
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESSWe determined the activities of catalase, invertase and amylase as well as the content of chlorophyll in the leaf and stem of the rice plant at nine times as reported in the 1st report and distinguished the following three stages during the growth of the rice plant. That is : 1st stage : Both the content of chlorophyll and the activities of catalase, amylase and invertase are high. At this stage, the photosynthesis proceeds actively in the leaf and stem. Its product is translocated actively to the growing point and is consumed there. 2nd stage : The content of chlorophyll and the activity of catalase are high, while the activities of amylase and invertase are not so great. the activity of photosynthesis is kept high from the first stage on and its product is accumulated in the leaf and stem. 3rd stage : Both the content of chlorophyll and the activity of catalase decrease, while the activities of amylase and invertase increase. So, at this stage, the product of photosynthesis in the leaf and stem moves actively into the ear to form the rice kernels.View full abstractDownload PDF (3209K) -
[in Japanese]Article type: Article
1954 Volume 25 Issue 4 Pages 168-
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESSDownload PDF (481K) -
[in Japanese]Article type: Article
1954 Volume 25 Issue 4 Pages 168-
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESSDownload PDF (864K) -
Masao DEGUCHI, Yasusada OHTA, Yasuo TOMITAArticle type: Article
1954 Volume 25 Issue 4 Pages 169-172
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESSTo study the influence of liming on paddy rice grown on infertile, neutral soil, various amount of lime was dressed as several life stages of rice plant, and following results were obtained. (1) When lime was applied as base fertilizer, great amount of lime injured the tillering of rice-plant, and small amount of lime was effective to increase the yield of rice. (2) Liming as top dressing, great amount of lime was effective rather than small amount of lime to increase the yields. (3) In the several stages of top liming, dressing at the very young head forming period was the most effective, and in other stages (before and after this stage) was not so effective. (4) It is supposed that the effect of small amount of base liming is due to the action of Ca ions as nutrient, and effect of great amount of top liming is due to the control of ineffective tillering by high reaction of soil.View full abstractDownload PDF (1639K) -
Masaya NODA, Kenji SAIOArticle type: Article
1954 Volume 25 Issue 4 Pages 173-175
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESS(1) Mechanism of the release of phosphorus from lron-, or Aluminium-phosphates by humic acid is different from that of such release as by complex-forming reagents, forming complex organometallic molecule or ions. (2) The increase of availability of phosphate by humic acid will be caused mainly by its disturbing action upon the combination of phosphate with such metals as Fe, Al or such bases as Ca Mg, Mn and also the absorption of phosphates by hydroxides of those metals and bases. Thus, the phosphate-releasing action of humic acid from various form phosphates and soil-fixed phosphates is considered to be insignificant.View full abstractDownload PDF (1490K) -
Koichi ODAGIRI, Hidenori HASHIMOTOArticle type: Article
1954 Volume 25 Issue 4 Pages 176-180
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESSA study was preliminaly made on the successive cropping of upland rice plant on the black volcanic ash soil at Kikyogahara district, Nagano Prefecture from the view point of edaphology. The top soils and upland rice plants used were taken from the highly productive field that has been cropped successively to uplant rice plant for long years and from the neighbouring, poorly productive field that has been unable to crop it successively because of its physiological diseases etc. A remarkable difference in these fields was found that the highly productive fields have received a larger amount of stable manure than in the poorly productive fields. As expected from this fact, the determination of total soil carbon and the mineralization of soil organic nitrogen suggested that the content of soil organic matter, especially the readily decomposable organic matter is significantly higher in the highly productive fields than in the poorly productive one (Refer to Table 2 and 4). Moreover, the changes of soil redoxpotential (Eh) under waterlogged conditions, the amount of iron and manganese of soils exchanged or solved out by salt solution and dil. HCI solution and the content of iron and manganese in upland rice plant were determined. The results obtained are presented in Fig. 1,Table 5 and 6 respectively. Of the differences of productivity of upland rice plant between these fields the considerations are given as follows : The soil of the poorly productive field has a less content of readily decomposable organic matter than that of the highly productive. Subsequently, in the poorly productive field, as the readily decomposable organic matter is decomposed the soil oxygen may be consumed to a smaller extent and so the soil redoxy condition will come to be rather oxidative than in the highly productive field. Under such oxidative conditions it is apparent that soil iron and manganese are kept immobile and cannt be utilized by upland rice plant. For that reason, in the poorly productive field there probably occurs iron or manganese defficiency sympton on the rice plant. In addition, a small moisture capacity of soil as a result of low content of soil organic matter may make the upland rice plant more susceptible to drought than in the highly productive field. Thus, it should be pointed out that it is desirable for succesive cropping of upland rice plant on the upland field cultivated for many years after reclamation to supply a considerabie amount of organic matter so as to maintain a high content of the decomposable soil organic matter.View full abstractDownload PDF (2313K) -
Masao HAMAMOTOArticle type: Article
1954 Volume 25 Issue 4 Pages 181-184
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESS1. Manufacturing conditions of phosphatic fertilizers utilizing reaction between sodium chloride and water vapor were studied. The proper quantity of phosphoric acid and sodium chloride to be added to the phosphate rock were determined as that the mol ratio of P_2O_5 : CaO : Na_2O of the whole mixtures were 1 : 2〜2.3 : 0.6〜0.8. When proper concentrations of phosphoric acid were used, the products became granules of diameter 1〜3 mm. 2. 1150℃ was necessary when potassium sulfate, sodium sulfate were used instead of sodium chloride. When potasium chloride only was used, the products were less soluble, but mixtures of sodium chloride and potassium chloride were used, results were satisfactory. 3. The manurial effects of products using KITADAITO phosphate rock and phosphoric acid were both better than superphosphate using Allyphatic Soil by WAGNER's Pot Experiment. 4. Fluorine was volatilized almost completely, and so it may be useful as animal feed also.View full abstractDownload PDF (1982K) -
Akio FUJIWARAArticle type: Article
1954 Volume 25 Issue 4 Pages 187-190
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
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[in Japanese]Article type: Article
1954 Volume 25 Issue 4 Pages 189-
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESSDownload PDF (501K) -
[in Japanese]Article type: Article
1954 Volume 25 Issue 4 Pages 189-
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESSDownload PDF (501K) -
[in Japanese]Article type: Article
1954 Volume 25 Issue 4 Pages 189-
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESSDownload PDF (501K) -
[in Japanese]Article type: Article
1954 Volume 25 Issue 4 Pages 189-190
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
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[in Japanese]Article type: Article
1954 Volume 25 Issue 4 Pages 190-
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESSDownload PDF (652K) -
[in Japanese]Article type: Article
1954 Volume 25 Issue 4 Pages 190-
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESSDownload PDF (652K) -
[in Japanese]Article type: Article
1954 Volume 25 Issue 4 Pages 190-
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESSDownload PDF (652K) -
Article type: Appendix
1954 Volume 25 Issue 4 Pages App2-
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESSDownload PDF (244K) -
Article type: Cover
1954 Volume 25 Issue 4 Pages Cover3-
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESSDownload PDF (106K) -
Article type: Cover
1954 Volume 25 Issue 4 Pages Cover4-
Published: December 15, 1954
Released on J-STAGE: June 28, 2017
JOURNAL FREE ACCESSDownload PDF (106K)
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