Casca-preta-do-inhame: aspectos gerais e uso de extratos vegetais no manejo da doença

Abstract

Yam (Dioscorea spp.) has achieved great economic importance worldwide, and the northeast of Brazil, stands out for being the largest producer at the national level, mainly due to the environmental conditions of the region that are favorable to its cultivation. The tuber is a very important food source in the world, due to its great nutritional potential. Its cultivation plays an important socioeconomic role, and is largely due to family activity, generating work and income, in addition to involving various sectors such as storage, transport and marketing. However, in addition to low productivity and lack of adequate management, producers are faced with several phytosanitary problems that affect the crop, among them, the attack of nematodes, especially the dry rot disease, caused by Scutellonema bradys, Pratylenchus coffeae e P. brachyurus that affect the commercial and seed tubers, continuing their reproduction and multiplication even after storage. The disease management is based on exclusion measures, by the use of healthy seed material in non-infested fields. Some studies have been demonstrated the efficacy of alternative methods, such as the use of plant extracts. In view of this, this review aimed to provide information on the dry rot and the efficiency of plant extracts as a promising method of alternative control of this disease.