Kumar, Sudhir, R. Venugopalan, V.K. Rao, A.K. Nair, and R. Chithiraichelvan. “Requirement of Major Nutrients for Annatto (Bixa Orellana L.) Seed Yield and Bixin Content”. Indian Journal of Horticulture 69, no. 03 (September 27, 2012): 399–403. Accessed December 22, 2024. https://journal.iahs.org.in/index.php/ijh/article/view/2011.