Effectiveness of rock phosphate as a source of phosphorus for plants
By: [by L. E. Ensminger, R. W. Pearson, and W. H. Armiger
Contributors: Pearson, Robert W., 1910-; Armiger, Walter Hamilton, 1914-
Series: [U.S. Agricultural Research Service] ARS 41-125; ARS 41 -- 125.
Publisher: Agricultural Research Service, U.S. Dept. of Agriculture
Place of publication: Washington]
Language: eng
Number of pages: 40
Subjects: Phosphate rock; Phosphatic fertilizers; Soils; Phosphorus content
Notes: "Literature cited": p. 28.