@article{rattin_andriolo_witter_2002,  title={Nitrogen concentration in dry matter of the fifth leaf during growth of greenhouse tomato plants},  volume={20},  ISSN={0102-0536},  url={https://doi.org/10.1590/S0102-05362002000400023},  DOI={10.1590/S0102-05362002000400023},  number={4},  journal={Horticultura Brasileira},  publisher={Associação Brasileira de Horticultura},  author={Rattin, Jorge E. and Andriolo, Jerônimo L. and Witter, Márcio},  year={2002},  month={Dec},  pages={626–629} }