@article{barreto_soares_pereira_bezerra_deus_2012,  title={Yield performance of upland rice cultivars at different rates and times of nitrogen application},  volume={36},  ISSN={0100-0683},  url={https://doi.org/10.1590/S0100-06832012000200017},  DOI={10.1590/S0100-06832012000200017},  number={2},  journal={Revista Brasileira de Ciência do Solo},  publisher={Sociedade Brasileira de Ciência do Solo},  author={Barreto, José Hildernando Bezerra and Soares, Ismail and Pereira, José Almeida and Bezerra, Antonio Marcos Esmeraldo and Deus, José Aridiano Lima de},  year={2012},  month={Mar},  pages={475–483} }