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The Unavailability of Phosphorus in Rock Phosphate to Some Southern Crops 1
Author(s) -
Bartholomew R. P.
Publication year - 1928
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/agronj1928.00021962002000090004x
Subject(s) - unavailability , phosphorus , citation , permission , library science , agricultural science , mathematics , agricultural economics , computer science , operations research , horticulture , political science , environmental science , economics , chemistry , statistics , law , biology , organic chemistry
The small amount of total and available phosphorus in many southern soils makes the question of phosphatic fertilization very important from the standpoint of economic crop production. Of the several kinds of phosphatic compounds sold as fertilizers, superphosphate (acid phosphate) and rock phosphate are the two which can be more readily obtained. The phosphorus can be bought much more cheaply per unit as rock phosphate, and if it is just as efficient as superphosphate (acid phosphate) in producing crops, would materially lower the cost of production of different crops. This investigation was started in order to study the availability of the phosphorus in rock phosphate as a source of phosphorus for some crops commonly grown in southern states.