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Effect of Phosphorus Fertilization on the Selenium Concentration in Alfalfa (Medicago sativa)
Author(s) -
Carter D. L.,
Robbins C. W.,
Brown M. J.
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/sssaj1972.03615995003600040035x
Subject(s) - loam , medicago sativa , phosphorus , human fertilization , agronomy , soil water , chemistry , greenhouse , selenium , zoology , environmental science , biology , soil science , organic chemistry
A study was conducted to determine the effect of P fertilization on the Se concentration in alfalfa. Adding P to the soil increased the Se concentration in alfalfa grown in the greenhouse on six of 14 soils from the northwestern United States. The Se concentration increase in alfalfa resulting from P addition was noted on some alkaline and some acid soils. Phosphorus addition increased the availability to alfalfa of both native and applied Se in the Portneuf silt loam. Applying 160 kg P/ha either as H 3 PO 4 or concentrated superphosphate to Gooding sandy loam in the field increased the Se concentration in alfalfa from a level marginal for animal requirements to an adequate level.