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Phosphorus Diffusion in Soils: II. The Effect on Phosphorus Uptake by Plants
Author(s) -
Mahtab S. K.,
Swoboda A. R.,
Godfrey C. L.,
Thomas G. W.
Publication year - 1972
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/sssaj1972.03615995003600010012x
Subject(s) - soil water , phosphorus , sorghum , water content , moisture , agronomy , chemistry , diffusion , soil science , environmental science , geology , biology , physics , geotechnical engineering , organic chemistry , thermodynamics
Phosphorus uptake by grain sorghum ( Sorghum vulgare ) was measured at four levels of applied P and three levels of moisture on four related Texas soils. The soils differed mainly in clay content. Phosphorus uptake was found to be a function of clay and water content of the soils and applied P. The total increase in dry matter yield for each addition of P was about the same for each soil except at the lowest moisture level. At the lower moisture levels, response to P additions was not as great on the coarser‐textured soils as on the fine‐textured soils. Phosphorus uptake was related to the diffusion coefficients of P previously determined for the four soils subjected to the same treatments as in this study; the correlation coefficient was 0.788.