<b><i>Nopalea</i> cactus pear fertilized with nitrogen: morphometric, productive and nutritional characteristics oleh João Ricardo Avelar Leite, Eleuza Clarete Junqueira de Sales, Flávio Pinto Monção, Adriano de Souza Guimarães, João Paulo Sampaio Rigueira, Virgílio Mesquita Gomes