01763naa a2200229 a 450000100080000000500110000800800410001910000110006024500820007126000090015350000190016252011170018165300190129865300110131765300290132865300130135765300160137065300140138665300220140065300140142277300970143610767312011-05-23       2008    bl uuuu     u00u1 u    #d1 aEpagri  aNitrogen and potassium affect fruit quality of fuji apple in southern Brazil.  c2008  aISSN, 00103624  aNitrogen (N) and potassium (K) are usually found in higher concentrations than other macronutrients in apple (Malus x domestica Borkh) fruits and are most frequently associated with changes in fruit quality. The aim of this article was to evaluate the effects of N and K fertilization on some fruit quality attributes of Fuji apple. The experiment was conducted at So Joaquim, State of Santa Catarina, Brazil, during 2004 and 2005. A factorial design was used with N and K annual fertilizer rates (0, 50, 100, and 200 kg ha-1 of N and K2O) replicated in three orchards. Fifteen days prior to harvest, three fruit samples were collected from each treatment and site. One sample was used for total soluble solid content (TSS), titratable acidity, pulp firmness, and fruit color parameter analyses, and the other samples were refrigerated in a conventional atmosphere for 3 and 6 months for subsequent determination of fruit quality. Nitrogen fertilization negatively affected fruit color, flesh firmness, and TSS content. These same variables were positively affected by K fertilization, except for flesh firmness.  aColor firmness  aMaçã  aMalus x domestica Borckh  aNitrogen  aNitrogênio  aPotássio  aPotassium soluble  aQualidade  tCommunications in Soil Science and Plant Analysis, Londongv. 39, n. 1 & 2, p. 96-107, 2008.