%0 Journal Article %T The results of experimental research of rotational conical working unit in the soil canal %A Yarullin , F.. %A Ibyatov, R.. %A Valiev, A.R. %A Shiriyazdanov , R.. %K soil tillage, conical working unit, draft resistance, soil canal, strain-gage testing. %J Vestnik of Kazan State Agrarian University %D 2014 %N 9 %P 7 %I Kazan state agrarian University