Who controlled farms under Stalin?

from reading

Explanation:

As part of the first five-year plan, collectivization was introduced in the Soviet Union by general secretary Joseph Stalin in the late 1920s as a way, according to the policies of socialist leaders, to boost agricultural production through the organization of land and labor into large-scale collective farms

Which group of farmers was completely destroyed by Stalin?

Stalin also imposed the Soviet system of land management known as collectivization. This resulted in the seizure of all privately owned farmlands and livestock, in a country where 80 percent of the people were traditional village farmers. Among those farmers, were a class of people called Kulaks by the Communists.