Premium
Soil Chemical Characteristics of Recent Volcanic Ash
Author(s) -
Bornemisza Elemer,
Morales José C.
Publication year - 1969
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1969.03615995003300040014x
Subject(s) - lysimeter , volcanic ash , leaching (pedology) , environmental science , environmental chemistry , phosphorus , soil water , volcano , geology , soil science , chemistry , geochemistry , organic chemistry
Volcanic ash, emitted by Irazú volcano in Costa Rica during 1963 and 1964, was evaluated for its agricultural value. The evaluation included leaching loss studies in lysimeters and measurements of nutrients extracted with various solutions. The CEC of the ash is about 1.85 meq/100 g, and its pH in water is 5.1; it contains little soluble or exchangeable Mn. Lysimeter experiments showed that Irazú ash does not fix phosphorus or retain cations added as fertilizers. The ash is wettable and forms, when wetted, a thin, hard, cemented surface crust.