Who first studied the Technical Efficiency of Greenhouse Rose Cut-Flower Farms, in Eastern and Rift Valley Routes in Oromia Regional State, Ethiopia? Mohammed Aman. What is the existing Technical Efficiency level of the Rose farms?.It is known that women contribute around 85% of the labor force in the industry. " The women cares a lot for roses and it is our turn to care a lot for them in Cut-Flower Industries." Mohammed Aman Ogeto, 2011.