Farias, Clementino Marcos Batista de, and José Ribamar Pereira. 2000. “Response of Irrigated Crops to Micronutrients Application in the submédio São Francisco Region”. Pesquisa Agropecuaria Brasileira 35 (6):1275-80. https://doi.org/10.1590/S1678-3921.pab2000.v35.5883.