THE RESEARCH FOR THE DEVELOPMENT OF AGRICULTURAL RECOVERY TECHNOLOGY OF STERILE LANDFILLS RESULTING FROM THE CURRENT EXPLOITATION OF LIGNITE

The research was organized on the Balta Unchiașului tailings dump, Rovinari, Gorj county, a dump covered with 30 cm of fertile soil, aiming to establish effect fertilization fertilizers, cattle manure, compost, lignite –based fertilizer and liquid based humates extracted from sunflower production followed mineral compost fertilizers lignite, crop). chemical characteristics crop substrate had large variability consisted of: pH values between 8.08 8.35, so slightly alkaline reaction, humus 2.50 -3.52%, being valued as low-medium level supply, nitrogen total 0.101 1.60%, therefore mobile phosphorus 25 44 mg/kg, medium-high supply. most high is recorded in variants fertilized manure potassium 152 315 medium - supply level, copper 18 23 normal values, nickel 37 an average load, lead 7 12 that highlight manganese 473 595 zinc 48 66 mg/ kg, showing cadmium 0.17 AND 0.32 mg/kg values. plants can be used hyperaccumulators.