Campos, Tarcísio Gomes da Silva, and Francisco Assis de Oliveira. “Effects of Urea-N Levels on Yield of Irrigated Upland Cotton, Cv. Cnpa Precoce 1”. Pesquisa Agropecuaria Brasileira 26, no. 9 (September 1, 1991): 1381–1385. Accessed March 25, 2026. https://apct.sede.embrapa.br/pab/article/view/3477.