Przemysl Chemiczny, Vol.92, No.7, 1323-1327, 2013
Effect of nitrogen and potassium compounds on the soil phosphorus solubility
NH4NO3 and KCl were added to soils with varying P content (316-456 mg/kg). A decrease in pH of the soil from 6.0 down to 5.0 was obsd. The addn. of N and K to the soil resulted in an increase in contents of available P and active P in the soils independing on the test performed.