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Volume 1985 (1985)
- Issue 55 Pages 1-
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Volume 1985, Issue 55
Displaying 1-7 of 7 articles from this issue
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Naotaka HAYASHI1985 Volume 1985 Issue 55 Pages 1-4
Published: December 20, 1985
Released on J-STAGE: February 09, 2010
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II. In Case of Spring-Cropped Chinese CabbageOsamu SAKAUE, Hisaharu KURATA1985 Volume 1985 Issue 55 Pages 5-14
Published: December 20, 1985
Released on J-STAGE: February 09, 2010
JOURNAL FREE ACCESSIn order to evaluate the effect of mechanical weeding for vegetable using rotary cultivator, chinese cabbage was directly planted in the field and cultivated through April to July.
By the experimental results, it was evident that practice of mechanical weeding finally brought less weed volume and larger harvest products than no weeding. The relation between final fresh weights of remaining weed (Xgm/0.6m2) and harvest products (Ygm/0.6m2) is as follows;
Y=10062-3.08X(r=0.91*)
This equation means that the maximum potential crop yield will be approximately 10kg/0.6m2 without weed and the existance of weed will decrease the crops by approximately 3gm in every 1gm of increasing weed volume toward the minimum estimated crops of 6.5kg without weed control. But by the operation of the rotary cultivator within one week before the harvest time, the implement considerably damaged plant body, and so many practices of weeding operation -for example more than four times in this period- brought bad influence on the growth of chinese cabbage.
This weeding method could act more effectively upon the winter growing weed group with wide leaves and creeping character rather than upon the summer growing weed group with swordlike leaves and vertical character.
When rearranging the experimental results, it will be needed to establish the accurate weed control technology and system including cross cultivation.View full abstractDownload PDF (1287K) -
Tetsuo SHIOYA, Tadashi KANAO, Tadahiko FUKUOKA1985 Volume 1985 Issue 55 Pages 15-23
Published: December 20, 1985
Released on J-STAGE: February 09, 2010
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I. About method of measurementFujio TARUI, Takashi TSURUSAKI, Yoshio HIKIDA1985 Volume 1985 Issue 55 Pages 24-27
Published: December 20, 1985
Released on J-STAGE: February 09, 2010
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II Compare with the data of young person using by Cybernetical Control Number TesterFujio TARUI, Takashi TSURUSAKI, Yoshio HIKIDA1985 Volume 1985 Issue 55 Pages 28-31
Published: December 20, 1985
Released on J-STAGE: February 09, 2010
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III. A distribution chart of selectmotion and C. C. No. diagramFujio TARUI1985 Volume 1985 Issue 55 Pages 32-35
Published: December 20, 1985
Released on J-STAGE: February 09, 2010
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Toshihiko IBUKI, Kazuhisa KATO, Shigeki ISHIDA1985 Volume 1985 Issue 55 Pages 36-43
Published: December 20, 1985
Released on J-STAGE: February 09, 2010
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