Berbara, Ricardo Luís Louro, Luís Rodrigues Freire, and Manlio Silvestre Fernandes. 1999. “Influence of Arbuscular Mycorrhiza Fungi on the Nutrition of Okra Plant”. Pesquisa Agropecuaria Brasileira 34 (9):1645-53. https://doi.org/10.1590/S1678-3921.pab1999.v34.5408.