In 1929, the Politburo announced the mass collectivisation of agriculture, establishing both "kolkhozy" collective farms and "sovkhoz" state farms. Stalin barred kulaks from joining these collectives. Although officially voluntary, many peasants joined the collectives out of fear they would face the fate of the kulaks; others joined amid intimidation and violence from party loyalists. By 1932, about 62% of households involved in agriculture were part of collectives, and by 1936 this had risen to 90%. Many of the collectivised peasants resented the loss of their private farmland, and productivity slumped. Famine broke out in many areas, with the Politburo frequently ordering distribution of emergency food relief to these regions.