The selection of tractors and their paired implements in the WonjiShoa factory (Ethiopia) has now become very difficult because of the diversity of tractormodels ranging from 45 to 298 kW. To dazed the problem of a paring of tractor implement the system, an expert system modelingmethodology foremost to decision support system (DSS) was accepted to make the step-wise decision. The use of DSS was validated in the study to pair an implementto match the tractor under different soiltypes, conditions, and operating constraints. Finally, the software calculates the PTO power requirement of a paired tractor. Centered onpremeditated PTO power, the software proposes accessible brands and models of tractor machinery following the gathered data bank. Model sensitivity was checked by changing the variables of the model input, which resulted in a change in power requirement. The developed DSS resulted in the economical saving of 108 USD/ha fuel cost and 11 USD/ha lubrication cost respectively for all tillage field operations. Thus, DSS can be used effectively in pairingatractorandanimplementofa particularsizefromvariousmakesandmodelsofcommerciallyavailabletractorsandimplements.