How successful was the communist regime in modernising Russia's agriculture in the years 1928 to 1941?

the definition of modernising agriculture is when there is a presence of high-tech equipment, the process is efficient and had coordination on a mass scale. Russia during this period was not completely  successful in modernising soviet agriculture! if you got the definition of modernisation it could save this essay. 

Can my 3 factors be: collectivisation, first five year plan, and the mass terror and purges?