Tačnost formulacije i ekološki aspekt nekih mineralnih đubriva

When buying mineral fertilizer, the user expects that the content of nutrients is in the prescribed minimum values indicated on the packaging and in the declaration and that the quality of used raw materials does not have a negative impact on the environment. The analysis of a number of samples of mineral fertilizers of different quantities and ratios N, P, K showed deviations from the minimum values of nutri-ent content from the declaration as well as increased content of certain heavy metals. For that reason, it is necessary that analyzes of manufactured and imported formulations are more often controlled by the competent institutions with the prescribed method of sampling.