final report_nagatake_ 2014

Final Report
(Submission Deadline: 18th September 2014)

Hokkaido University
Nagatake Arata
Group No.

 Our group made a master plan named “SI-Energy – Sustainable and Independent Energy”. This plan focused on the rural area where there are almost half of the world population and supply them to urban area, but sometime they don’t have enough energy to satisfy their demand. We think these problems with conventional energy production and network system come from location, building cost and small fund of rural area. We suggested that self energy and food production system depend on their local resources, using micro-hydro plant, bio-gas plant and eco-farming aquaculture in Indonesia, a tropical area. And we showed that those three method are not only required from ecological aspect but also very reasonable method for rural area from economical aspect.
 We showed that our plan is reasonable on energy production by them selves especially from the cost. On the other hand, though our plan is highly dependent on natural resource cycle and also related with food production system, we didn’t mention about detail of effect of our plant to these systems. Then next step is to show farmers and local governor that our method can keep their feed and food production rate, and will not increase environmental pollution to get their consent and cooperation to our master plan comparing with conventional method. I measure in soil science and plant nutrition, and environmentally friendly agriculture, and my mission in this group is to assess agricultural part especially about the residue from bio gas plant and its effect to agricultural production and environmental pollution.

“Effect of timing and rate of liquid-manure application on…
Back ground : Undisposed animal waste is one of source of water pollution, bad smell and it is not good for sanitation. But it still have rich carbon and nutrients in it self. Bio-bas plan is one of the systems which can get a fuel from animal waste, and more we can use residue as liquid-manure fertilizer. Appropriate usage of bio-gas plant residue can increasing of feed and food production and sanitation. But there are two problem to solve about liquid manure application in tropical area. Firstly liquid manure is very easy to loss from soil by leaching and run off especially in rainy season, and it cause not only nutrient loss but also water pollution. Secondly, high and constant nutrient supply is required to keep rapid plant growth in tropical area. How many times, season, and rate of amount of manure application are important information not only for nutrient up take–loss balance, but also controlling working time, and decide a size and maintenance of bio-gas plant.
Material and Methods
Target : plant production rate, inorganic and organic nitrogen and phosphorus leaching and run off
Lab experiment : fill the box lysimeter (1 m3) with soil with and without manure, and simulate a climate in dry and rainy season. Leaching water is collected from bottom of box, and run off is estimated from surface flow. Treatments are as follow no manure, 1 time application in dry season, 2 time separation (in dry-dry or dry rainy). This experiment is for estimate leaching and runoff

Field experiment : this is for continuous assessment of plant production.

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