Production of soil amendment by utilization of the weed Amaranth

There is a possibility of using agricultural waste, in particular weeds, innovative technologies for the restoration disturbed land order to increase fertility. Digestate, after anaerobic digestion manure and weed plant Amaranthus retroflexus L. (AR), as well solid carbonaceous residue pyrolysis AR. The combination digestate, which contains high concentrations total nitrogen, phosphorus, potassium, residue, provides new composite soil amendment. It has potential source nutrients because it large amount mineral components. amendment does not contain toxic elements such as: lead, cadmium, mercury, arsenic nickel, but zinc copper content exceeds recommended values.