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A Field Comparison of Eight Phosphate Fertilizers 1
Author(s) -
Odland T. E.,
Bell R. S.,
Salomon M.
Publication year - 1956
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1956.00021962004800090007x
Subject(s) - phosphate , metaphosphate , phosphorite , yield (engineering) , phosphorus , agronomy , chemistry , hay , phosphate fertilizer , zoology , materials science , biology , metallurgy , organic chemistry
Synopsis Differences in yields of corn from different phosphate sources were small, and in nearly all cases statistically insignificant. Fused phosphate produced a significantly higher yield of hay than any other source. Differences in yield from other treatments were insignificant. Regular grade superphosphate, concentrated superphosphate, and dicalcium phosphate produced the highest yields of potatoes; rock phosphate produced only about 60% as high potato yield as these even at double the P 2 O 5 rate. The other materials were intermediate. Tests at the close of the experiment showed the most extractable phosphorus in plots receiving rock phosphate, fused phosphate, or calcium metaphosphate.