Used modified rice combine for cutting wheat crops to maximize utilization of it. Five wheat harvesting systems were evaluated at three average grain moisture contents of (MC1 =20.80, MC2 =18.50 and MC3 =16.65 %) namely: traditional harvesting (Hand cutting), partial mechanization (modified combine harvester, self-propelled reaper binder, self- propelled vertical conveyor reaper and tractor mounted vertical conveyor reaper windrower). The experiments were carried out in wheat fields to determine total grain losses, energy consumed and cost requirements for harvesting wheat crop. The results indicated that, traditional harvesting system gave the lowest values of grain loss by average 2.00, 2.92 and 2.34 % under moisture contents of 20.80, 18.50 and16.65%, respectively. The highest value of cutting efficiency 97.2% was notice under used combine machine with forward speed of 1.5 km/h and moisture content of 16.65 %. The minimum cost requirements values were obtained by using self-propelled reaper binder of 17.17, 15.20 14.00, L.E/fed at the higher forward speed of 3.3 km/h under different grain moisture contents of 20.80, 18.50 and 16.65 %, respectively. While the maximum cost requirements was obtained by using modified combine of 73.96, 72.8 and 70.71 L.E/fed at the lower forward speed of 1.5km/h under different grain moisture contents of 20.80, 18.50 and 16.65 %, respectively.