A composition and a pelleted seed, and a coating process for preparing the coated seeds by utilizing inexpensive materias such as PVA, activated carbon and microcrystalline cellulose in a specific composition range, which greatly reduces spatial variability, achieving uniform plant stands, and reduces the emergence variability without significantly hindering the development of the seedling, achieving uniformly early emerged plants. The pelleted seeds exhibit an outstanding tolerance to cold and hydric stress conditions after sowing, preserving the vitality of seeds.