@article{mota_villas bôas_ludwig_fernandes_folegatti_2014,  title={Portable meters for nutritional assessment in plants of gerbera fertigated with electrical conductivity levels},  volume={18},  ISSN={1415-4366},  url={https://doi.org/10.1590/S1415-43662014000300003},  DOI={10.1590/S1415-43662014000300003},  number={3},  journal={Revista Brasileira de Engenharia Agrícola e Ambiental},  publisher={Unidade Acadêmica de Engenharia Agrícola},  author={Mota, Poliana R. D'A. and Villas Bôas, Roberto L. and Ludwig, Fernanda and Fernandes, Dirceu M. and Folegatti, Marcos V.},  year={2014},  month={Mar},  pages={258–262} }