Institution: | 1. Brazilian Agriculture Research Corporation (Embrapa), Embrapa Cerrados, BR 020 Km 18, P.O. Box 08223, Planaltina, DF, 73310-970, Brazil 2. Agronomy Department, University of Florida, 304 Newell Hall, P.O. Box 110500, Gainesville, FL, 32611-0500, USA
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