The results of the analysis of maize plant biomass in Table 1 show that with fertilization at a dose of 67.5 kg N.ha-1 + 33 kg P2O5 ha-1,
the heaviest plant biomass is obtained and it is significantly different from treatment without fertilizer of N and P that just produces biomass plants with a weight of 67.70 g, but not significantly different from the dose of fertilizer 135 kg N.ha-1 + 66 kg P2O5 ha-1.