“ Rhizosphere PH and Phosphorus Forms in an Oxisol Cultivated With Soybean, Brachiaria Grass, Millet and Sorghum ”. Scientia Agricola 69, no. 4 (janeiro 1, 2012): 259–264. Acessado maio 29, 2024. https://revistas.usp.br/sa/article/view/22734.