Affiliation: | 1.Department of Agronomy, Federal Rural University of Pernambuco, Dom Manuel de Medeiros street, s/n - Dois Irmãos, Recife, PE, 52171-900, Brazil ;2.Brazilian Agricultural Research Corporation (Embrapa), Rodovia BR 428 - KM 152, C.P. 23, Petrolina, PE, 56302-970, Brazil ; |