Abstracts of Nippon Dojo-Hiryogaku Zasshi

Vol. 88 (2017)

No. 3

The importance of soil education analyzed from a survey questionnaire of elementary school children: A case study in Tokyo and Tochigi

Hideaki HIRAI¹, Ikuko AKAHANE² and Masayo HIRAI³

¹ Faculty of Agriculture, Utsunomiya University, ² Institute for Agro-Environmental Sciences, NARO, ³ Weeds and Wildlife Management Center, Utsunomiya University

(Jpn. J. Soil Sci. Plant Nutr., 88, 205–212)

In order to analyze the importance of soil education, we surveyed a total of 1993 first through sixth grade elementary school students in Tokyo and Tochigi. After the analysis of the data, we obtained the following results: 1) The percentage of students who replied ‘I would like to know as much as possible about soil’ decreased as students increased from first to sixth grade. 2) Students’ surroundings (the number of places with soil) influenced their degree of interest in soil. 3) As their knowledge of soil increased, the percentage of students who replied ‘I prefer to have as much soil around me as possible’ increased. 4) About 68％ of the students who replied ‘I would like to have as much soil around me as possible’ also replied ‘I would like to know as much about soil as possible.’ 5) About 38％ of students who replied ‘I don’t touch soil at all’ replied ‘I would not like to know about soil.’ 6) More than 30％ of the sixth graders, but only about 10％ of the fifth graders in Tokyo replied ‘I would not like to know about soil.’ 7) Of the students in Ichikai-machi, Tochigi, 70％ replied ‘There are many places with soil close to where I live’ and only 10％ of these sixth graders replied ‘I would not like to know about soil.’ Hence, we consider that soil education is important for sixth graders, especially those who live around places with less soil in their surroundings.

Key words Elementary school student, knowledge, touch, necessity of soil, interest, surrounding places with soil

Original Paper

Concentrations of nutrient content in rice variety Koshihikari Kan No.1 and risk estimation of incidence of brown spot disease in different paddy fields

Toshimitsu HONMA¹, Yutaka SHIRATORI¹, Hirotomo OHBA^{1, †}, Toru TSUCHIDA¹, Tomoyuki MAKINO², Tadashi ABE² and Satoru ISHIKAWA²

¹ Niigata Agricultural Research Institute, ² Institute for Agro-Environmental Sciences, NARO, ^†Niigata Agriculture Extension Center

(Jpn. J. Soil Sci. Plant Nutr., 88, 213–220)

This study was conducted to assess the effect of rice variety Koshihikari Kan No.1, which is a mutant with nearly cadmium-free grains produced by irradiation with heavy-ion beams, on the incidence of rice brown spot disease in different paddy fields, including Akiochi. We also investigated the effects of Mn-bearing materials on brown spot disease and rice productivity. A summary follows.

1. Brown spot disease tended to occur under soil conditions with low P, Si, and exchangeable cation (Ca, Mg, K, and Mn) availability.

2. Brown spot lesions in flag leaves were induced by low K, Si, Mn, and Fe contents in shoots.

3. Koshihikari Kan No.1 rice showed a higher ratio of brown spots than the Koshihikari variety, but it recovered by applying the Mn-bearing material.

4. Koshihikari Kan No.1 rice contained low levels of Mn and high levels of Fe in its shoots compared to the Koshihikari variety.

5. The rice grain yield of Koshihikari Kan No.1 rice was lower than that of the Koshihikari variety in paddy fields where brown spot disease has occurred. However, the yield of Koshihikari Kan No.1 was improved by applying Mn-bearing material.

Key words Akiochi paddy field, brown spot disease, cadmium, Koshihikari Kan No.1, manganese

Original Paper

Relationship between the powder properties of ill-crystallized calcium silicate hydrates (C-S-H) synthesized by various methods and the phosphorus recovery rate from aqueous solutions using C-S-H

Hiroki MATSUZAWA^1,4, Toshio MASUDA¹, Nobutaka MINOWA², Tsuyoshi AKETO³, Toshio IMAI³, Hiromi KONISHI⁴ and Kuni SUEYOSHI⁴

(Jpn. J. Soil Sci. Plant Nutr., 88, 221–227)

¹ Research & Development Laboratory, Onoda Chemical Industry Co., Ltd., ² Product Compliance Room, Onoda Chemical Industry Co., Ltd., ³ Research & Development Center, Taiheiyo Cement Co., Ltd. ⁴ Grauate School of Science and Technology, Niigata University

In this study, we examined the relationship between powder properties of ill-crystallized calcium silicate hydrates (C-S-H) synthesized by various methods and the recovery rate of phosphorus (P) from an aqueous solution using C-S-H. The calcium (Ca) ion of C-S-H reacted with P in the aqueous solution and all recovered materials contained hydroxyapatite. P recovery using C-S-H was completed within 30 min and each C-S-H showed a different Ca reaction rate and P-recovery rate. Most of the recovered materials contained no less than 15％ citric-soluble phosphates.

Our research verified that the Ca reaction rate of C-S-H has a strong negative correlation to C-S-H crystallite size estimated by X-ray diffraction. However, the Ca reaction rate did not correlate with other powder properties, such as average particle diameter, specific surface area, and bulk density. Because of a strong correlation between the Ca reaction rate and P-recovery rate, C-S-H crystallite size also has a strong negative correlation to the P-recovery rate. In conclusion, P-recovery rate increased with the decrease in C-S-H crystallite size.

Key words C-S-H, calcium reaction rate, hydroxyapatite, crystallite size, phosphorus recovery rate

Note

Production of the acidic sludge fermented fertilizer and the application effect of fertilizer to soil

Takashi KOBAYASHI and Katsuhiko KURIHARA

Tsukuba Development Center, MC FERTICOM Co., Ltd

(Jpn. J. Soil Sci. Plant Nutr., 88, 228–233)

Note

Nitrogen fertile effects of cattle manure to tomato cultivations in greenhouse fields in cold regions

Tetsuo HAYASHI^† and Yuji HIKASA

Hokkaido Research Organization, Dohnan Agric. Exp. Stn., ^† Hokkaido Nuclear Energy Environmental Research Center

(Jpn. J. Soil Sci. Plant Nutr., 88, 234–237)

Current Topic

Nitrogen fertilizer reduction for lettuce cultivation using controlled release fertilizer to nursery plug trays

Yoshio OHTSU^† and Kazuhiro SHOBU^‡

Nagasaki Agricultural and Forestry Technical Development Center, ^† Nagasaki Pref. Tsushima Promotion Station, ^‡ Nagasaki Pref. Department of Agriculture and Forestry

(Jpn. J. Soil Sci. Plant Nutr., 88, 238–241)

Lecture

6. Genome-wide exploration of novel mechanisms involved in plant response to mineral nutrition using next-generation transcriptome analysis

Sho NISHIDA

Faculty of Science and Engineering, Chuo University

(Jpn. J. Soil Sci. Plant Nutr., 88, 242–247)

Lecture

3. Measurement for environmental evaluation at plot, regional, and watershed scales

Atsushi HAYAKAWA¹, Morihiro MAEDA² and Nobuhisa KOGA³

¹ Faculty of Bioresource Sciences, Akita Prefectural University, ² Graduate School of Environmental and Life Science, Okayama University, ³ Kyushu Okinawa Agricultural Research Center, NARO

(Jpn. J. Soil Sci. Plant Nutr., 88, 248–257)

Review

Function and value of arbuscular mycorrhizal symbiosis in fields

Yoshihiro KOBAE

Hokkaido Agric. Res. Cent., NARO

(Jpn. J. Soil Sci. Plant Nutr., 88, 258–264)

Lecture

Metabolomics: Comprehensive analysis of plant metabolites aimed at application to agriculture

Keiki OKAZAKI

NARO Central Region Agricultural Research Center

(Jpn. J. Soil Sci. Plant Nutr., 88, 265–271)

Miscellaneous

Development of compost-mixed compound fertilizer and perspectives

Masahiko KATOH¹, Yusuke ARAKAWA², Takashi KENJOU³, Teppei KOMIYAMA⁴, Shinichi MORITSUGU⁵, Toshihiko TANAHASHI⁶, Hideto UENO⁷ and Mizuhiko NISHIDA⁸

¹ Department of Agricultural Chemistry, School of Agriculture, Meiji University, ² Kyushu Okinawa Agricultural Research Center, National Agriculture and Food Research Organization (NARO), ³ Fertilizer Development Section, Asahi Industries CO., LTD, ⁴ Fertilizers and Agrochemical Division (Kyusyu Branch), National Federation of Agricultural Cooperative Associations (ZEN-NOH), ⁵ Okayama Prefectural Technology Center for Agriculture, Forestry and Fisheries, ⁶ Gifu Prefectural Agricultural Technology Center, ⁷ Department of Agro-Biological Science, Graduate School of Agriculture, Ehime University, ⁸ Tohoku Agricultural Research Center, National Agriculture and Food Research Organization (NARO)

(Jpn. J. Soil Sci. Plant Nutr., 88, 272–276)

Miscellaneous

Significance of winter flooding in paddy field, its effect on soil nutriment dynamics and greenhouse gases emission

Rikiya NIRA¹, Tomoki TAKAHASHI², Toyoaki ITO³, Kouichi HOSOKAWA⁴, Kenichi INOUE⁴ and Kazunori MINAMIKAWA⁵

¹ Central Region Agricultural Research Center, NARO, ² Tohoku Agricultural Research Center, NARO, ³ Field Science Center, Graduate School of Agricultural Science, Tohoku University, ⁴ Fukui Agricultural Experiment Station, ⁵ Institute for Agro-Environmental Science, NARO

(Jpn. J. Soil Sci. Plant Nutr., 88, 277–282)

Miscellaneous

Recent developments for integrated nitrogen management system: Report of INMS2 meeting and Joint China-Japan workshop for East-Asia activity in toward INMS

Kazuya NISHINA¹, Sadao EGUCHI², Hideaki SHIBATA³ and Yoshitaka UCHIDA⁴

¹ National Institute for Environmental Studies, ² Institute for Agro-Environmental Sciences, NARO, ³ Field Science Center for Northern Biosphere, ⁴ Research Faculty of Agriculture, Hokkaido University

(Jpn. J. Soil Sci. Plant Nutr., 88, 283–285)

Miscellaneous

Interview to Prof. Emer. Kikuo KUMAZAWA – For International Decade of Soils

Kazuyuki INUBUSHI and Miwa YASHIMA

Graduate School of Horticulture, Chiba University

(Jpn. J. Soil Sci. Plant Nutr., 88, 286–288)

Miscellaneous

Report of 7th International Nitrogen Initiative Conference

Haruka KIBA¹, Akane CHIBA² and Misato TODA²

¹ Graduate School of Environmental and Life Science, ² Graduate School of Agriculture, Hokkaido University

(Jpn. J. Soil Sci. Plant Nutr., 88, 289)

Miscellaneous

Report of the 15th International Peat Congress

Fumiaki TAKAKAI¹ and Yo TOMA²

¹ Fac. Bioresource Sci., Akita Pref. Univ., ² Grad. Sch. Agric., Ehime Univ.

(Jpn. J. Soil Sci. Plant Nutr., 88, 290)

Member’s Plaza Member’s activities

Member’s activities

(Jpn. J. Soil Sci. Plant Nutr., 88, 291)