Fuente: WIPO "tomato" A plant treatment composition includes a biostimulant and a coordination-based platform including a metal, wherein the biostimulant is encapsulated in the coordination-based platform and the metal interacts with the biostimulant. A method of promoting plant growth includes applying to a seed, plant propagation material, or plant, a composition including a biostimulant, and a coordination-based platform, wherein the biostimulant is encapsulated in the coordination-based platform and the composition is sufficient to improve plant yield.