@article{manfron_lazzarotto_medeiros_1993,  title={TRIGO - Aspectos agrometeorológicos},  volume={23},  ISSN={0103-8478},  url={https://doi.org/10.1590/S0103-84781993000200021},  DOI={10.1590/S0103-84781993000200021},  number={2},  journal={Ciência Rural},  publisher={Universidade Federal de Santa Maria},  author={Manfron, Paulo Augusto and Lazzarotto, Cláudio and Medeiros, Sandro Luis Petter},  year={1993},  month={May},  pages={233–239} }