Crystallography and equilibrium solubility for ammonium and potassium orthophosphites and hypophosphites |
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| Authors: | Frazier A W Waerstad K R |
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| Affiliation: | (1) Tennessee Valley Authority, National Fertilizer and Environmental Research Center, 35660 Muscle Shoals, Alabama, USA |
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| Abstract: | The composition and solubility properties of eight ammonium and potassium orthophosphites and hypophosphites were determined to evaluate the potential of these classes of materials for increasing the plant nutrient content of liquid fertilizers. Phase relationships for the systems (NH4)2O-P2O3-H2O, K2O-P2O3-H2O, (NH4)2O-P2O-H2O, and K2O-P2O-H2O were determined along with the crystallographic properties (X-ray and optical) of the solid phases. Toxicity and phosphite response was tested in greenhouse experiments for the compounds. |
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| Keywords: | Crystallography solubility phase system ammonium potassium phosphite hypophosphite plant food content crop response |
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