TY - SER AU - Hernandez,A.del P. AU - Cock,J.H. AU - El-Sharkawy,M.A. TI - The responses of leaf gas exchange and stomatal conductance to air humdity in shade-grown coffee, tea and cacao plants as compared with sunflower KW - CAFE KW - CHA KW - CACAU KW - GIRASSOL KW - FOLHA KW - RELACAO AGUA-PLANTA KW - TRANSPIRACAO VEGETAL KW - SOMBREAMENTO KW - RADIACAO LUMINOSA KW - RENDIMENTO ER -