Effect of Different Tillage Methods on Soil Physical Properties, and Yield of Two Forage Maize Cultivars in Varamin Province

Tillage systems are one of the main factors affecting the physical properties of soil and volatilities of yield of agricultural products. This experiment was done in summer 2013 in the research field of Islamic Azad University of Varamin. The study was performed using the statistical split plots in the form of completely randomized blocks design with three replications. The main factors in this study included four different methods of tillage and as the sub-factors two varieties of forage maize. Completely randomized blocks design was used for the statistical analysis of soil physical properties. Based on the results, the different tillage methods affect the measured traits such as soil physical properties and plant yield significantly at 1% probability level. The maximum yield rate was related to the single cross 704 variety with twice disc tillages at the depth of 10-15 cm and equal to 88.18 tons fresh fodder per hectare.