Wietholter, Sírio, Otávio J. F. de Siqueira, Geraldino Peruzzzo, and José R Ben. “Effect of Mineral and Organic-Mineral Fertilizers on Yields of Crops and on Soil Fertility Factors”. Pesquisa Agropecuaria Brasileira 29, no. 5 (May 1, 1994): 713–724. Accessed July 7, 2026. https://apct.sede.embrapa.br/pab/article/view/4107.