In the Katanga, in the peasant environment the middle yield of corn oscillates between 800 and 1000 kg.ha-1 against respectively 3000 to 4000 kg.ha-1 and 6000 to 8000 kg.ha-1 in the big agricultural exploitations and in the stations of research. To solve the problem of deficit and dependence opposite the outside, the experimentations have been led to Kasapa farming to value effective varieties of corn. Fourteen varieties of corn exits of the Business Pannar, Republic South African have been valued. Every variety has been sowed as using a device in complete blocks randomized with three repetitions and these varieties has been compared to Unilu and Katanga varieties selected by the faculty of agricultural sciences/University of Lubumbashi and the Babungo variety selected by the National Institute of Study and agricultural research. All varieties tested in the soil and climate conditions of the city of Lubumbashi gave similar yields to those of the local witnesses. In the context of the province of the Katanga, the varieties adapted to the climatic conditions degenerated and don't permit to achieve some good yield anymore. Besides, with the climatic change observed these last decades, the effective variety selection will permit to put at the disposal of the peasants of the varieties of corn adapted to the climatic conditions degenerated and to good potential of yield in grains.