@article{silva_oliveira neto_naiara_karpinski_maciel_2016,  title={Weed Interference Periods in Early Wheat in the Midwest of Paraná},  volume={34},  ISSN={0100-8358},  url={https://doi.org/10.1590/S0100-83582016340200010},  DOI={10.1590/S0100-83582016340200010},  number={2},  journal={Planta Daninha},  publisher={Sociedade Brasileira da Ciência das Plantas Daninhas },  author={SILVA, A.A.P. and OLIVEIRA NETO, A.M. and NAIARA, G. and KARPINSKI, R.A.K. and MACIEL, C.D.G.},  year={2016},  month={Apr},  pages={291–298} }