Impact Assessment of the Varieties and Cultivation Methods on Paddy Yield : Evidence from a Large-scale Farm in the Kanto Region of Japan

• Li Dongpo

  Faculty of Agriculture, Kyushu University

• 南石 晃明

  九州大学大学院農学研究院農業資源経済学部門農業資源経済学講座農業経営学研究室

• 松江 勇次

  九州大学大学院農学研究院

• 長命 洋佑

  九州大学大学院農学研究院農業資源経済学部門農業資源経済学講座農業経営学研究室

• 横田 修一

  有限会社横田農場

抄録

This study aims to identify the impact of variety and cultivation method to paddy yield within the large–scale farms, which have been increasing over the latest decades in Japan. The study objects are 351 paddy fields in a farm corporation over 113 ha, locating in the Kanto region of Japan, and the yield is measured by smart combine. The result of ANOVA (Analysis of Variance) indicates that variety of paddy is a significant factor affecting the yield; although the cultivation method is not significant, it is significant interacting with the effect of variety. According to the result of Duncan’s new multiple range test (DNMRT), the varieties are divided into three groups. Further analyses with the adoption of four factors and results of the following ANOVAs show that time of transplanting or sowing, growth duration from transplanting or sowing to earring, total Nitrogen amount and field area are effective factors. Finally, the key points for higher paddy yield are summarized, including suitable variety adoption, earlier transplanting or sowing and hence longer period for vegetative accumulation, sufficient Nitrogen application, and appropriate field areas.

収録刊行物

• Journal of the Faculty of Agriculture, Kyushu University

  Journal of the Faculty of Agriculture, Kyushu University 60 (2), 529-534, 2015-09-18

  九州大学大学院農学研究院

キーワード

• ANOVA
• Cultivation method
• Paddy
• Veriety
• Yield

詳細情報

• CRID: 1390290699661507200
• NII論文ID: 120005661391
• NII書誌ID: AA00247166
• DOI: 10.5109/1543424
• HANDLE: 2324/1543424
• ISSN: 00236152
• 本文言語コード: en
• データソース種別:
  • JaLC
  • IRDB
  • Crossref
  • CiNii Articles