Agronomic characteristics and optimized sweet potato root production in monoculture under green manuring

One of the challenges scientific research on sweet potatoes in semi-arid environments is to increase biomass amounts spontaneous species from Caatinga biome, such as hairy woodrose (Merremia aegyptia L.) and roostertree (Calotropis procera Ait.), for use green fertilizers during cultivation. Therefore, this study aimed agronomically economically optimize agronomic characteristics potato root production a monoculture, fertilized with equal mixture these species, over two years The experimental design was complete randomized blocks five treatments replications. consisted at 16, 29, 42, 55, 68 t ha-1 dry basis. An additional treatment planted each experiment, one without (control) another mineral fertilizer, compare maximum physical or economic efficiency. Sweet fertilization obtained optimized productive efficiency by incorporating 46.97 M. C. into soil. agroeconomic (based net income) cultivation occurred adding 41.55 Using viable technology producers who practice monocropping environments.