A comparison among three chisels plough shares forms i.e., shovel with a width of 10 cm, breaker sweep with a width of 15 cm and wing with a width of 20 cm was executed with soil having a silt loam texture under constant operating circumstances. The main results of the current study can be summarized as follows;  The soil surface after ploughing with shovel shares form possessed the greatest percentage of the roughness (59.03%), whereas utilization of the breaker sweep and wing shares form leaved the soil surface with roughness of 51.9 and 37.9%, respectively. The percentage ploughed area after ploughing at depth of 18 cm was 55.37%, 64.2695 and 75% from the total area with usage of shovel, breaker sweep and wing shares forms, respectively. The power required for ploughing process at an operating depth of 18 cm and forward speed of 0.8 m Sec^-1 were 7.92, 11.76 and 9.3 kW, while the unit draught of soil was 0.62, 0.8 and 0.54 kN cm^-2 concerning the shovel shares form, breaker sweep shares and wing shares form, respectively.   Generally, it can be concluded that the chisel plough with wing shares form is the most suitable primary tillage implement.