On 26 March 1970, with the war still underway, the government of South Vietnam began implementation of the Land-to-the-Tiller program, in a quite similar fashion to what Prosterman had proposed.
According to Prosterman's own NGO Landesa, the scheme was indeed a clear success and "(his) land to the tiller program in Vietnam from 1970 to 1973 gave land rights to 1 million tenant farmers.