Determination of Mobile Phosphorus Fraction in the Soil Variety Taxonomy Using Ammonium Lactate-Acetate

Currently in the case of agrochemical research of the agrarian soils mobile phosphates are calculated, represented by the monophosphate (H2PO4 center dot) and diphosphate (HPO42-) ions which are usually retained on the soil particles surface associated with sescvioxides, with other minerals components of clay or with the calcium and magnesium ions. Thereby, the mobile phosphates came in contact with the soil solution and determined its concentration in phosphates ions. During the soil evolution, phosphorus from apatite is altered and transformed through precipitation by other secondary minerals or by undertaking by plants or microorganisms in other organical or inorganical phosphor compounds [2]. In the acid soils secondary phosphorus minerals formed contain Al and Fe phosphates, in the type of variscite and strengite [6]. In the neutral and alkaline soils various types of Ca phosphates are found.