Crusciol, C.A.C. et al. 2012. Nutrients extraction and exportation by Savana castor bean hybrid: I – Macronutrients. Semina: Ciências Agrárias. 33, 6Supl1 (Dec. 2012), 2619–2636. DOI:https://doi.org/10.5433/1679-0359.2012v33n6Supl1p2619.