@article{rehman_qamar_farooq_qamar_hassan_2018,  title={Competitive Ability of Santa-Maria (<i>Parthenium hysterophorus</i> L.) with Spring Maize},  volume={36},  ISSN={0100-8358},  url={https://doi.org/10.1590/S0100-83582018360100051},  DOI={10.1590/S0100-83582018360100051},  journal={Planta Daninha},  publisher={Sociedade Brasileira da Ciência das Plantas Daninhas },  author={REHMAN, A. and QAMAR, R. and FAROOQ, M. and QAMAR, J. and HASSAN, F.},  year={2018},  pages={e018172580} }