This investigation was carried out on Le-Conte pear trees, to study the effect of spraying potassium oxide (Ko₂), Urea and gibberellic acid (GA₃), alone or in combinations on fruit set percentage, yield., leaf mineral contents and fruit characters. Fruit quality was also studied after cold storage for one or two months.                 Results revealed that, all treatments gave significant increase in fruit set percentage and yield. Spray (Ko₂ 1.5 ml/L (or) 3.0 ml/L  GA₃ 20 ppm), was superior for all results comparing to other treatments.  Spraying of urea 1% + GA₃ 20 ppm gave better results than spraying with Ko₂ 1.5 ml/L (or) 3.0 ml/L + GA₃ 20 ppm.  No differences were found for the two concentrations of KO₂.                 Urea plus GA₃ treatments in both seasons significantly increased leaf (N) content and decreased leaf (K) content. Concerning leaf (P) content, there was no clear differences between all treatments.                 During cold storage of pear fruits, firmness and total acidity were less than before storing and that of control. Total soluble solids were increased during cold storage.