Agronomic performance of cassava fertilized with phosphorus doses

We have evaluated the agronomic performance of table cassava cultivars fertilized with phosphorus doses in Brazilian Semiarid Region. Two agricultural crops were grown at Rafael Fernandes Experimental Farm, Mossoró, RN, from June/2018 to April/2019 and June/2019 April/2020. The experimental design was randomized blocks, arranged subdivided plots, four replications. In applied (0, 60, 120, 180 240 kg P2O5 ha-1), subplots, (Água Morna, BRS Gema de Ovo, Recife Venâncio). following evaluated: dry matter leaf, stem, commercial root; harvest index; root number; productivity aerial part productivity. used had high productivities indicating that their irrigated cultivation is appropriate under conditions region Rio Grande do Norte. Água Ovo are more efficient use phosphorus, obtaining even absence phosphate fertilization. cultivar Venâncio responsive fertilization, as it needs an input this nutrient increase its