P. SURESHKUMAR, Anu George and. Availability Indices of Boron in Tropical Acidic Rice Soils. Journal of the Indian Society of Soil Science, India, v. 64, n. 1, 2016. Disponível em: https://epubs.icar.org.in/index.php/JISSS/article/view/58737. Acesso em: 6 jun. 2026.