2016 Fiscal Year Final Research Report
The effect on utilization of bio-oxidized anaerobic digestate as nutrient solution for hydroponics on the use efficiency of nitrogen absorption in higher plants
| Project/Area Number |
26520311
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 特設分野 |
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| Research Field |
Food Cycle Research
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
Endo Ryosuke 大阪府立大学, 生命環境科学研究科, 助教 (10409146)
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| Project Period (FY) |
2014-07-18 – 2017-03-31
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| Keywords | メタン発酵 / 養液栽培 / 施設園芸 / 資源循環 / 持続可能性 / 微生物反応 |
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| Outline of Final Research Achievements |
The effect on utilization of bio-oxidized anaerobic digestate as nutrient solution for hydroponics on the use efficiency of nitrogen absorption in higher plants was evaluated.
Up to 85% ammonium ion in digestate was transferred to nitrate ion by bio-oxidization process. Tomato, lettuce and cucumber plants were grown hydroponically in an environment-controlled chamber with oxidized digestate, in which the ratio of ammonium to nitrate is controlled to as same as the ratio in commercial nutrient solution. Experimental results revealed that the growth and nitrogen absorption were modified by oxidizing digestate in all kinds of plants. On the other hands, largest growth and highest absorption were observed in that with commercial solution. This may be caused by excess and/or deficient nutrients in oxidized digestate.
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| Free Research Field |
生物環境調節学
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