The Ivinhema Valley is the most important region for cassava production in State of Mato Grosso do Sul. However, the restricted number of cultivars available for this region contributes for the occurrence of low yields and increasing diseases and pests. The objective of this study was to evaluate the performance of cassava genotypes in the region of Ivinhema Valley. The experiments were conducted from July/2005 to September/2006, in Nova Andradina, Ivinhema and Deodápolis in a randomized complete block design, with four replications. Yield components and resistance to sooty mould caused by whiteflies (Bemisia sp.) were evaluated in 11 cassava cultivars. It was found that the cultivars IAC 12 and Fécula Branca were the most resistant to sooty mould incidence. Cv. Cascuda showed the largest yield of storage roots and dry matter in all tested environments.
Manihot esculenta Crantz; cultivars; storage root; Bemisia sp