Evaluation of cultivation sustainability of cash crops in Sainyabouli Province, Laos
| Project/Area Number |
16H05779
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 海外学術 |
|---|
| Research Field |
Crop production science
|
|---|
| Research Institution | Tohoku University |
|---|
Principal Investigator |
Homma Koki 東北大学, 農学研究科, 教授 (60397560)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
吉田 貢士 茨城大学, 農学部, 准教授 (20420226)
牧 雅康 東北工業大学, 工学部, 准教授 (50375391)
百村 帝彦 九州大学, 熱帯農学研究センター, 准教授 (80360783)
|
|---|
| Research Collaborator |
SHIRAIWA Tatsuhiko
MATSUMOTO Naruo
FUJISAO Kazuhiko
KHANTHAVONG Phanthasin
|
|---|
| Project Period (FY) |
2016-04-01 – 2019-03-31
|
| Project Status |
Completed (Fiscal Year 2018)
|
| Budget Amount *help |
¥15,990,000 (Direct Cost: ¥12,300,000、Indirect Cost: ¥3,690,000)
Fiscal Year 2018: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2017: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
|
|---|
| Keywords | 換金作物 / 栽培持続性 / トウモロコシ / リモートセンシング / 森林保護 / キャッサバ / カウピー / 森林破壊 / 水利モデル / 生産持続性 / 葉面積 / 土壌水分 / 森林管理 / ドローン / 衛星画像 / 農業生産 |
|---|
| Outline of Final Research Achievements |
Maize was cultivated for 30 years without fertilizer application in Sainyabouli Province in Laos. During the cultivation, the maize yield has continuously decreased and the production was lower than the profitable level in some places. Accordingly, conversion from maize to cassava has been promoted. However, the production and the price of cassava is decreasing. These constraints make farmers start cultivating cowpea, because it relatively maintains soil fertility and has relatively higher price. In order to develop the sustainable cultivation method, quantitative evaluation for landuse, soil fertility and crop production is necessary. This study suggests that the combined method of satellite and drone remotesensing with field investigation is effective method for the purpose.
|
| Academic Significance and Societal Importance of the Research Achievements |
熱帯地域ではその土地に見合った作物生産が持続的に営まれてきたが，換金作物の導入や，機械化などにより，栽培持続性が急速に危ぶまれている．研究対象地でも無肥料で収量が低下しつつあったものの，トウモロコシ栽培が30年間も持続的に栽培されていたことが示された．しかしながら近年の様々な要因により，収益面での持続性が維持できなくなり，わずか3年の短い調査期間内でも，キャッサバさらにカウピーへと栽培作物が急激に変化した実態が明らかとなった．東南アジアでは類似の地域が多く存在すると考えられ，総合的な取り組みを始めることが喫緊の課題であると思われた．
|
Report
(4 results)
Research Products
(31 results)
-
-
-
-
[Journal Article] Calibrating LAI Parameter with Remote Sensing Data for SIMRIW-RS in Thailand2019
Author(s)
Raksaatcharawong, M.*, Veerakachen, W., Prompitakporn, P., Wongsripisant, C., Maki, M., Homma, K., Oki, K
-
Journal Title
THA 2019 International Conference
Volume: TA124
Pages: 1-5
Related Report
Open Access / Int'l Joint Research
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] Effect of continuous maize cultivation on soil condition and yield in Northern Laos2017
Author(s)
70.Fujisao, K., Khanthavong, P., Oudthachit, S., Matsumoto, N., Homma, K., Asai, H., Shiraiwa, T.
Organizer
9th Asian Crop Science Conference
Related Report
Int'l Joint Research
-
-
-
-
-
-
