Cajazeira, J.P. Corrêa, M.C. de M. Almeida, E.I.B. Queiroz, R.F. Mesquita, R.O. Growth and gas exchange in white pitaya under different concentrations of potassium and calcium Subjects--Topical Terms: CACTACEAENUTRIENTE MINERALPOTÁSSIOCÁLCIOCONDIÇÃO AMBIENTAL