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Fertilizer Value of Rhenania‐Type Phosphates in Greenhouse Experiments 1
Author(s) -
Brenes E. J.,
Miller R.,
Schmehl W. R.
Publication year - 1955
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/agronj1955.00021962004700020008x
Subject(s) - value (mathematics) , citation , fertilizer , library science , agricultural science , mathematics , greenhouse , computer science , horticulture , agronomy , environmental science , statistics , biology
RESULTS obtained in a recent investigation carried out by the Colorado Agricultural Experiment Station (7) indicated that Rhenania-type phosphate, a finely ground, very slightly water-soluble material, was as avaikble to various crops grown in two calcareous Colorado soils as concentrated superphosphate. The Rhenania-type materials used in the study were ground to pass from 75 to 18% through a 200mesh sieve. They were found to be less effective when placed in a band than when broadcast and plowed under, a fact which indicated the possibility that this fertilizer's efficiency may be decreased if applied in a granular form. These results merit additional study of the availability of Rhenania-type phosphates in calcareous soils.