Application of mix inoculant of PSB and PSF was able to increase the weight of cornhusk due between Pseudomonas sp. and Penicillium sp. will support each other in providing supply of nutrients especially P for their life, because of Pseudomonas SP. and Penicillium sp.. work synergistically producing phosphatase enzymes in the process of mineralizing and immobilizing to transform organic P into inorganic P, so that the growth of both can still be optimal from vegetative stage to harvesting of the plant. The existence of this synergism, assist in providing P for maize until harvest, especially in filling of maize grains, which ultimately increase the results of cornhusk weight