Report
Overseas Field Training：Eco-Balance Analysis of Rice Cultivation Systems related with environmental Impact
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| Deforestation and soil erosion | Sedimentation? in paddy fields |
Place : Hanoi University of Agriculture, Vietnam
Date : 16 February – 2 March 2011
＜Report by Ei Ei Theint＞
It was studied in Chieng Khoi commune, Northern Vietnam from 16th Feb to 01st March 2011. The objective was to study the relationship between rice productivity and environmental impact (methane gas) under specific management practice. This region was steep slope mountainous region. Uplands crops were grown on these slopes and paddy fields were located in valley bottom. Due to increasing population, agricultural production were extended in uplands crops that leads to deforestation with associated soil erosion and siltation in lowlands. It may affect not only upon rice production but also on methane emission. Paddy rice was cultivated in two growing seasons; spring (irrigated; 55.66 ha) and summer (rainfed; 73.66 ha). Single drainage was 12.2% and intermittent flooding was 87.8%. Organic matter was used in intermittent flooding practice. In single drainage, organic matter was used in 92.8% of total single drainage area. Therefore, three practices could be found; Single drainage with and without organic matter, and intermittent flooding with organic matter. Among these practices, intermittent flooding with organic matter that showed high productivity and low emission is the appropriate practice in rice cultivation. From this training, I got the knowledge how to evaluate environmental impact from agricultural management practices. Moreover, field experience was received by directly interviewing with farmers and observing actual field conditions. Finally, I would like to say that field experience is necessary before conducting research to know about actual field condition and to solve problems. Therefore, this experience will support to me to become environmental leader.
Supervisor / Instructor and students traveled with :
Kimura Sonoko Dorothea(supervisor), Aung Zaw Oo(D1), Bessy Sze Ee KHO (M2)