2011 Fiscal Year Final Research Report
Reliable testing methods for soil phosphorus and potassium
| Project/Area Number |
21380048
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Plant nutrition/Soil science
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KUBOTERA Hideo 独立行政法人農業・食品産業技術総合研究機構, 九州沖縄農業研究センター, 主任研究員 (30355648)
MORI Yuki 九州大学, 大学院・農学研究院, 助教 (90404061)
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| Research Collaborator |
AYE AYE Than 九州大学, 生物資源環境科学府, 博士課程学生
GOTO Kaori 九州大学, 生物資源環境科学府, 修士課程学生
SANO Masatoshi 大分県農林水産研究指導センター, 主任研究員
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| Project Period (FY) |
2009 – 2011
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| Keywords | 土壌診断 / カリウム / リン / 陽イオン交換反応 / 表面錯形成反応 |
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| Research Abstract |
A disk incorporating synthetic akaganeite that is highly specific to phosphate(P) was devised and tested. The amount of P taken up by the disk was a better measure for plant-available P in greenhouse soils rich in P than the amount of P extracted by conventional dilute sulfuric acid method. The importance of exchangeable K, selectivity for K and charge fraction of adsorbed K was suggested for evaluating available K. But non-exchangeable K was utilized in some soils.
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