2018年
Effects of Slope-related Soil Properties on Upland Rice Growth and Yield under Slash-and-burn System in South Konawe Regency, Southeast Sulawesi Province, Indonesia
Tropical Agriculture and Development
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- 巻
- 62
- 号
- 2
- 開始ページ
- 60
- 終了ページ
- 67
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.11248/jsta.62.60
- 出版者・発行元
- 日本熱帯農業学会
<p>This study examined how slope-related soil physicochemical properties affect the growth and yield of upland rice subjected to slash-and-burn. The yield survey and soil analysis were performed at a hillside farm in Southeast Sulawesi Province, Indonesia. Organic-C, total-N, available-P and exchangeable-Ca, Mg, and K tended to increase further down the slope, leading to greater rice growth and yield. The resultant yield increase was mainly attributable to higher spikelet number per square meter. Total-N explained variation in spikelet number per panicle, but not variation in grain yield. Among the tested soil physicochemical parameters, only organic-C was significantly and positively correlated with rice growth and yield. In addition, most other parameters increased with soil organic-C. These findings indicate that organic-C in the soil is important to the growth and yield of upland rice cultivated with slash-and-burn systems, although other complex relationships may exist between rice productivity, the environment, and agricultural management factors. Moreover, our results imply that position on a slope affect rice growth and yield.</p>
- リンク情報
- ID情報
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- DOI : 10.11248/jsta.62.60
- ISSN : 1882-8450
- CiNii Articles ID : 130007497988
- identifiers.cinii_nr_id : 9000398396812