@article{weigel_bueno_clement_alves_ranzanl_asakawa_harwood_1981,  title={O Departamento de Ciências Agronômicas},  volume={11},  ISSN={0044-5967},  url={https://doi.org/10.1590/1809-43921981111s025},  DOI={10.1590/1809-43921981111s025},  number={1},  journal={Acta Amazonica},  publisher={Instituto Nacional de Pesquisas da Amazônia},  author={Weigel, Peter and Bueno, Carlos Roberto and Clement, Charles R. and Alves, María Luiza and Ranzanl, Guido and Asakawa, Neuza and Harwood, John},  year={1981},  month={Mar},  pages={25–37} }