1% of arable land had been collectivized.
"Wikipedia"
For the collectivization of the means of production, it was originally envisaged that workers will revolt and forcibly collectivize the means of production.
"Wikipedia"
The Central Committee of the Polish Workers Party decided in September 1948 to collectivize Polish farms, acting on the June 20, 1948 Bucharest resolution of the Cominform, which stipulated that collectivization should start in all Communist countries.
"Wikipedia"