| Item type |
国際農研デフォルトアイテムタイプ（フル）(1) |
| 公開日 |
2024-07-18 |
| タイトル |
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|
タイトル |
Soil–water conditions and efficient fertilization strategies to increase rice grain yield in rainfed lowland fields in Savannakhet Province |
|
言語 |
en |
| 作成者 |
Ikeura, Hiroshi
Phongchanmixay, Sengthong
Chomxaythong, Amphone
Bounyavong, Bounson
Khanthavong, Phanthasin
Khanthavong, Thanouphone
Matsumoto, Naruo
Kawamura, Kensuke
Homsengchanh, Laeh
Inkhamseng, Somphone
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| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 内容記述 |
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|
内容記述タイプ |
Other |
|
内容記述 |
Most lowland rice fields in Savannakhet Province, the main rice-producing region in Laos, are rainfed and cover both lowlands as well as gradual hilly terrain with sandy soils. The water and nutrient conditions of the lowland rice fields likely vary by location and geological conditions. Additionally, high risk of nutrient leaching from applied fertilizer is expected in such sandy rainfed fields. The objectives of this study are 1) to assess rice yield and water and soil conditions in the rainfed rice fields of Savannakhet Province, 2) to identify the determinants of variation in rice yield, and 3) to evaluate rice plant growth and nutrient leaching under different split chemicalfertilizer application patterns. The rice grain yield varied from 0.6 to 3.6 t ha-1, and the yield in the lower position fields was significantly higher than in the upper position fields. Surface water in the observed fields was mostly maintained above ground level throughout the planting period. Total carbon, total nitrogen, available phosphorus, and exchangeable potassium were extremely low, while the exchangeable calcium and exchangeable magnesium were relatively high. Exchangeable calcium was selected as the highest influential factor to rice grain yield, followed by total carbon. The grain yield from six split fertilization was higher than from three split fertilization (standard) and basal fertilization only. The split fertilization is advantageous in that it supplies nitrogen for panicle initiation and maturing stages in sandy paddy fields. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
Japan International Research Center for Agricultural Sciences |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_3248 |
|
資源タイプ |
book part |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| ID登録 |
|
|
ID登録 |
10.34556/0002000389 |
|
ID登録タイプ |
JaLC |
| 関連情報 |
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|
関連タイプ |
isPartOf |
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|
識別子タイプ |
DOI |
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|
関連識別子 |
https://doi.org/10.34556/0002000382 |
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関連名称 |
Potential and Efficiency of Underused Agricultural and Fishery Resources in Laos |
| 収録物識別子 |
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収録物識別子タイプ |
PISSN |
|
収録物識別子 |
1341-710X |
| 収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11159468 |
| 書誌情報 |
en : JIRCAS Working Report : Potential and Efficiency of Underused Agricultural and Fishery Resources in Laos
巻 90,
p. 23-37,
発行日 2020-03-19
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| 助成情報 |
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識別子タイプ |
Crossref Funder |
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|
助成機関識別子 |
https://doi.org/10.13039/501100009472 |
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|
助成機関名 |
Japan International Research Center for Agricultural Sciences(en) |
jircas_working_report90-_23-37 (1.2MB)
