El Seginy,, A., Khalil, B. (2000). EFFECT OF SPRAYING SOME NUTRIENTS AND GIBBERELLIC ACID ON LEAF MINERAL CONTENT, FRUIT CHARACTERS AND YIELD OF LE-CONTE PEAR TREES. Journal of Plant Production, 25(6), 3529-3539. doi: 10.21608/jpp.2000.259129
Amal M. El Seginy,; Bahan M. Khalil. "EFFECT OF SPRAYING SOME NUTRIENTS AND GIBBERELLIC ACID ON LEAF MINERAL CONTENT, FRUIT CHARACTERS AND YIELD OF LE-CONTE PEAR TREES". Journal of Plant Production, 25, 6, 2000, 3529-3539. doi: 10.21608/jpp.2000.259129
El Seginy,, A., Khalil, B. (2000). 'EFFECT OF SPRAYING SOME NUTRIENTS AND GIBBERELLIC ACID ON LEAF MINERAL CONTENT, FRUIT CHARACTERS AND YIELD OF LE-CONTE PEAR TREES', Journal of Plant Production, 25(6), pp. 3529-3539. doi: 10.21608/jpp.2000.259129
El Seginy,, A., Khalil, B. EFFECT OF SPRAYING SOME NUTRIENTS AND GIBBERELLIC ACID ON LEAF MINERAL CONTENT, FRUIT CHARACTERS AND YIELD OF LE-CONTE PEAR TREES. Journal of Plant Production, 2000; 25(6): 3529-3539. doi: 10.21608/jpp.2000.259129
EFFECT OF SPRAYING SOME NUTRIENTS AND GIBBERELLIC ACID ON LEAF MINERAL CONTENT, FRUIT CHARACTERS AND YIELD OF LE-CONTE PEAR TREES
Horticultural Research Institute, Agricultural Research Center
Abstract
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.
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