@article{donato_donato_silva_pires_silva_2017,  title={Extraction/exportation of macronutrients by cladodes of ‘Gigante’ cactus pear under different spacings and organic fertilization},  volume={21},  ISSN={1415-4366},  url={https://doi.org/10.1590/1807-1929/agriambi.v21n4p238-243},  DOI={10.1590/1807-1929/agriambi.v21n4p238-243},  number={4},  journal={Revista Brasileira de Engenharia Agrícola e Ambiental},  publisher={Unidade Acadêmica de Engenharia Agrícola},  author={Donato, Paulo E. R. and Donato, Sérgio L. R. and Silva, João A. and Pires, Aureliano J. V. and Silva, Ancilon A. e},  year={2017},  month={Apr},  pages={238–243} }