keshavarzpour,F , , Ajabshirchi,Y , and Maysami,M A . "Determination of energy efficiency and productivity in cotton life cycle in order to prepare the seed and re-cultivate it in different tillage methods (Case study in Varamin city)" .e10122 , Journal of Researches in Mechanics of Agricultural Machinery, 8, 2, 2019, e10122.