KUMAR, Dileep; SINGH, A P; KUMAR, Anjani. Nutrient uptake and yield of rice (Oryza sativa L.) as influenced by coal-derived potassium humate and chemical fertilizers. ORYZA-An International Journal of Rice, India, v. 54, n. 2, 2017. Disponível em: http://epubs.icar.org.in/index.php/OIJR/article/view/75176. Acesso em: 20 oct. 2025.