KATHULI, P.; GACHIMBI, L.; MAINGIAND, S.; THURANIRA, E. Suitability of Modified Dilute Double Acid ÐMehlich 1 (0.1NHCL + 0.025NH2SO4) and Olsen (0.5MNaHCO3PH 8.5) Methods for Testing of Available Phosphorous for Kenyan Soils. Discovery and Innovation, [S. l.], v. 19, n. 3, 2009. DOI: 10.4314/dai.v19i3.15802. Disponível em: https://www.ajol.info/index.php/dai/article/view/15802. Acesso em: 30 aug. 2026.