Fertilizer bio urine effectiveness test and the combination with chemical fertilizer on nutrient uptake and rice production. Periodicals of Engineering and Natural Sciences, [S. l.], v. 9, n. 4, p. 180–190, 2021. DOI: 10.21533/pen.v9.i4.937. Disponível em: https://pen.ius.edu.ba/index.php/pen/article/view/937. Acesso em: 18 apr. 2026.