@article{bragagnolo_amado_bortolotto_2016,  title={Use efficiency of variable rate of nitrogen prescribed by optical sensor in corn},  volume={63},  ISSN={0034-737X},  url={https://doi.org/10.1590/0034-737X201663010014},  DOI={10.1590/0034-737X201663010014},  number={1},  journal={Revista Ceres},  publisher={Universidade Federal de Viçosa},  author={Bragagnolo, Jardes and Amado, Telmo Jorge Carneiro and Bortolotto, Rafael Pivotto},  year={2016},  month={Jan},  pages={103–111} }