The Hung Loc Agricultural Experimental Research Center is actively combating cassava mosaic disease by developing and distributing resistant cassava varieties such as HN1 and HN5 in Dong Nai province, which have demonstrated high yields and starch content. Despite the high demand, the low multiplication rate of these varieties has led the Center to adopt rapid multiplication techniques. In collaboration with the International Center for Tropical Agriculture (CIAT), the Center is crossbreeding local varieties with imported resistant ones, resulting in several successful varieties like HN3, HN5, HN1, HN36, HN80, and HN97, which show strong resistance to the disease. A hybrid garden in Don Duong district, Lam Dong province, supports this research. The Ministry of Agriculture and Rural Development is backing efforts to diversify and supply these resistant varieties to farmers, including testing the promising TMEB419 variety from Africa.