@article{vasconcelos_zhang_ervin_kiehl_2009,  title={Enzymatic antioxidant responses to biostimulants in maize and soybean subjected to drought},  volume={66},  ISSN={0103-9016},  url={https://doi.org/10.1590/S0103-90162009000300015},  DOI={10.1590/S0103-90162009000300015},  number={3},  journal={Scientia Agricola},  publisher={Escola Superior de Agricultura "Luiz de Queiroz"},  author={Vasconcelos, Ana Carolina Feitosa de and Zhang, Xunzhong and Ervin, Erik H. and Kiehl, Jorge de Castro},  year={2009},  month={May},  pages={395–402} }