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Utilization of Soil and Fertilizer Phosphorus Compounds by Slash Pine Seedlings in Relation to Their Solubility in Soil Test Extractants
Author(s) -
Ballard R.,
Pritchett W. L.
Publication year - 1975
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/sssaj1975.03615995003900030042x
Subject(s) - monocalcium phosphate , slash pine , fluorapatite , chemistry , potassium , soil water , phosphorus , fertilizer , agronomy , phosphate , botany , mineralogy , pinus <genus> , apatite , environmental science , soil science , biology , organic chemistry , fishery , fish <actinopterygii> , fish meal
Eight P compounds, monocalcium and dicalcium phosphates, fluorapatite, colloidal aluminum and ferric phosphates, potassium taranakite, wavellite, and strengite were evaluated as sources of P for slash pine ( Pinus elliottii var. elliottii Engelm.) seedlings grown on two acids soils in the greenhouse. Potassium taranakite and both colloidal phosphates were as effective P sources as monocalcium and dicalcium phosphate in stimulating tree growth. Fluorapatite was an effective source on a soil of pH 4.3 but was ineffective on a soil of pH 5.3. Wavellite and strengite were ineffective P sources on both soils. The uptake of P by seedlings corresponded closely to the amount of H 2 O‐extractable P present following 2 months of incubation of the P compounds in the soils.