A field experiment was conducted at Abu-Ghrib to study the effect of pulverization systems on the Decomposion of organic manures in soil and it effect on the growth parameters and productivity of (Zea Mays L. 5018). The experiment was designed in Split-Split Designe with three replicatates .The main plots were for two system of pulverization (Rotary Harrow ,Disc Harrow ) The sub main plots were for two organic manures ( Sheep manure ,cow manure ) . result obtain indicated that there were significant differences between the pulverization systems and the kind of organic matter with their interaction.at the same organic matter. The rotary harrows was the best system of pulverization.The cow manure gave best effect to soil.The results showed that addition of organic manure with urea stored for 90 days caused a significant increase in MWD,total porosity,total nitrogen ,height of plant, and there was a decrease in bulk density of soil .This study  shows that the addition of organic matter positive effect on all parameters of the growth and productivity of zea mays 5018.