The European Biostimulant Industry Council (EBIC)
Plant biostimulants contain substance(s) and/or micro-organisms whose function when applied to plants or the rhizosphere is to stimulate natural processes to enhance/benefit nutrient uptake, nutrient efficiency, tolerance to abiotic stress, and crop quality.
Find more on Yotube by the link https://www.youtube.com/watch?v=4UvVOiqRSoU
(Source: Ltalpollina)