Tangriani Simioni Assmann, Alceu Luiz Assmann , Laércio Ricardo Sartor, Talyta Zortéa1. “Soil Nitrate, Phosphorus and Potassium Concentration After Four Years of Liquid Swine Manure Application on Tifton 85”. African Journal of Pig Farming, vol. 11, no. 1, Mar. 2023, pp. 1-8, https://elixirpublishers.in/index.php/ajpf/article/view/818.