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Phosphate availability in alkaline calcareous soils
- McGeorge, W.T.
- Agronomy journal 1933 v.25 no.5 pp. 351-354
- calcareous soils, alkaline soils, phosphorus, phosphates, nutrient availability, soil pH, puddling, carbon dioxide, calcium carbonate, Arizona
- Briefly summarizing, infertility of alkaline calcareous soils is in large part a nonabsorption of phosphate, and possibly other ions, and less a direct alkaline toxicity. Phosphate availability in such soil types is not a simple matter of solubility, but rather is a complex of several factors to which carbon dioxide is the key. A thorough acquaintance with these factors may be of greater assistance in estimating the phosphate requirement of a soil than a determination of phosphate solubility by means of some empirical reagent.