Developing the soil improvement material for the replanting failure by excrement sludge with Bacillus subtilis, clear water sludge and mushroom abolishment fungus floor
| Project/Area Number |
17560492
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Civil and environmental engineering
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| Research Institution | Gunma National College of Technology |
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Principal Investigator |
AOI Toru Gunma National College of Technology, Department of Civil Engineering, Professor, 環境都市工学科, 教授 (90270222)
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| Project Period (FY) |
2005 – 2006
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| Project Status |
Completed (Fiscal Year 2006)
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| Budget Amount *help |
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2006: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2005: ¥2,200,000 (Direct Cost: ¥2,200,000)
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| Keywords | replanting failure / clear water sludge / soil improvement material / Bacillus.sp / excrement sludge / mushroom abolishment / root-knot Nematodes |
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| Research Abstract |
Various pesticides and disinfectants are used in order to prevent the replanting failure on every farmland in Japan. However, these agricultural chemical are not good for environment and farmer's health. In this research, it was tried to prevent the replanting failure by using antimicrobial and antibiotic activity of the bacillus sp..
Dry sludge of the human excreta treatment plant where the bacillus sp. was dominant, clear water sludge of rapid filtration plant and mushroom industry abolishment fungus floor were used as a raw material of new soil conditioner.
At first, these 3 kinds of raw material were mixed, and the aerobic fermentation continued under medium-temperature in the laboratory. At the fermentation start, mold and various bacteria colonies grew, but after 2 - 3 weeks cultivation, mold and various bacteria colonies disappeared and the bacillus sp. dominated. Next, the trial manufacturing of the soil conditioner, it was confirmed that the bacillus sp. made into the dominance grew up to 1.0E+08 colonies /g. It is said if the number of Bacillus sp. exceed 1.0E+07 colonies/g, replanting failure could be overcomed.
Then the soil conditioner was produced experimentally in the spring 2006, and inhibition test of the replanting failure was carried out on a Chinese yam plowed field. The result was good, and from this result, it was proved that the newly produced bacillus sp. dominant soil conditioner was effective for the replanting failure inhibition in actual plowed field.
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Report
(3 results)
Research Products
(8 results)
