This first part of this Act amends 46 points of the Fertilizers Act. The Act lays down provisions concerning reporting on fertilizers and additive substances (art. 3a), registration of fertilizers (art. 4), decisions on registration (art. 5), use of fertilizers, additive substances, treated sludge and sediment (art. 9), administrative offenses of legal and physical persons dealing with fertilizers. The Act amends also the Wastes Act, specifying concentration limits of pollutants in excavated soils, including sediment from water reservoirs and river watercourses.