Journal of the Japanese Society of Agricultural Technology Management
Online ISSN : 2424-2403
Print ISSN : 1341-0156
Volume 20, Issue 3
Displaying 1-3 of 3 articles from this issue
  • Fumio KISHIDA, Toshio SAKAKIBARA, Takashi KUROSAWA, Koji NISHIKAWA, Ko ...
    Article type: Article
    2013 Volume 20 Issue 3 Pages 79-84
    Published: December 15, 2013
    Released on J-STAGE: April 11, 2019
    JOURNAL FREE ACCESS
    Simple prediction of daily yield of green asparagus was attempted using weather survey data of the Meteorological Agency currently exhibited on web for free. The thermal data and precipitation data of the meteorological station 6km away from the cultivation place were used in a multiple regression analysis to derive a regression equation of the simple prediction of daily yield. It was indicated that the multiple regression function whose the average temperature of the harvest day and its previous day and, average temperature of nine days and ten days before the harvest day were explanatory variable is applicable to simple prediction of daily yield. From these results, the environmental factors that decide daily yield are discussed.
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  • Masayuki KAWAMURA, Akira ISHIDA, Shigeki YOKOYAMA
    Article type: Article
    2013 Volume 20 Issue 3 Pages 85-93
    Published: December 15, 2013
    Released on J-STAGE: April 11, 2019
    JOURNAL FREE ACCESS
    The purpose of this paper is to specify the factors that affect the eating behaviors of high school and junior high school students, using the individual data of a survey implemented by Benesse Educational Research and Development Center in 2004. Quantitative analysis confirmed that individual attributes, lifestyle/independence, dining environment/atmosphere, family relationships (i.e., relationship with parents), and living place affect the habits of skipping meals and picky eating observed among high school and junior high school students. Further, the frequency of skipping meals may increase while the tendency towards picky eating may decrease as students progress to higher grades. It is important to work with both students and parents in the future to resolve the problematic habits of skipping meals and picky eating. This can be done by facilitating the improvement of students' lifestyle and family environment, including dining environment/atmosphere and parent-child relations. These changes support an enjoyable dining environment. In addition, we suggest conducting a regional campaign targeting convenience stores and family restaurants frequently patronized by high school and junior high school students in order to enhance their food consciousness.
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  • Satoshi MORI, Yoshikatsu MATSUKA
    Article type: Article
    2013 Volume 20 Issue 3 Pages 95-101
    Published: December 15, 2013
    Released on J-STAGE: April 11, 2019
    JOURNAL FREE ACCESS
    The effects of deep plowing and inorganic soil amendments application on tree vigor of Japanese pear were investigated. The deep plowing improved soil physical properties. The application of inorganic soil amendments with deep plowing resulted in a further improvement, the most notably in perlite. The perlite improved also the soil chemical properties. The TTC reduction activity of roots was activated by perlite or vermiculite application. Moreover, perlite treatment alleviated the symptoms of Japanese pear stunt. These results indicated the posibilities that the combination of deep plowing and inorganic soil amendments application had positive effects on both enhancing the tree vigor of Japanese pear and on controlling the progress of the Japanese pear stunt.
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