Use of natural extracts of tannin and non-tannin materials to improve soil fertility and provide an initiating effect on crops

摘要

Use of a phytocomposition of tannin and non-tannin materials, either in dry or liquid form, applied to seeds or members of a dynamic multiplication, or to implanted seedlings, as promoter of an initiating effect consisting of a strong growth stimulation initial thereof, said phytocomposition being an aqueous extract at 13% w / w of tannins created by leaching a biomass of Castanea spp with water.