Khattab,, M., Hasseb, G., Shaban, A. (2000). INFLUENCE OF FULL BLOOM SPRAY APPLICATION OF PUTRESCINE, KNO3 AND CPPU ON NUMBER OF FRUITS, FRUIT SET, FRUIT DROP AND FRUIT RETENTION OF ALPHONSO MANGOES. Journal of Plant Production, 25(6), 3605-3614. doi: 10.21608/jpp.2000.259141
M. M. Khattab,; G. M. Hasseb; A. E. Shaban. "INFLUENCE OF FULL BLOOM SPRAY APPLICATION OF PUTRESCINE, KNO3 AND CPPU ON NUMBER OF FRUITS, FRUIT SET, FRUIT DROP AND FRUIT RETENTION OF ALPHONSO MANGOES". Journal of Plant Production, 25, 6, 2000, 3605-3614. doi: 10.21608/jpp.2000.259141
Khattab,, M., Hasseb, G., Shaban, A. (2000). 'INFLUENCE OF FULL BLOOM SPRAY APPLICATION OF PUTRESCINE, KNO3 AND CPPU ON NUMBER OF FRUITS, FRUIT SET, FRUIT DROP AND FRUIT RETENTION OF ALPHONSO MANGOES', Journal of Plant Production, 25(6), pp. 3605-3614. doi: 10.21608/jpp.2000.259141
Khattab,, M., Hasseb, G., Shaban, A. INFLUENCE OF FULL BLOOM SPRAY APPLICATION OF PUTRESCINE, KNO3 AND CPPU ON NUMBER OF FRUITS, FRUIT SET, FRUIT DROP AND FRUIT RETENTION OF ALPHONSO MANGOES. Journal of Plant Production, 2000; 25(6): 3605-3614. doi: 10.21608/jpp.2000.259141
INFLUENCE OF FULL BLOOM SPRAY APPLICATION OF PUTRESCINE, KNO3 AND CPPU ON NUMBER OF FRUITS, FRUIT SET, FRUIT DROP AND FRUIT RETENTION OF ALPHONSO MANGOES
Pomology Department, Faculty of Agriculture, Cairo University
Abstract
This study was carried out during 1997 and 1998 seasons. Alphonso mango trees of 20 year old were used. The experiment was conducted in an orchard located in Giza governorate. Panicles were sprayed at full bloom with putrescine at 150, 300 or 450 PPM, KNo3 at 0.5, 1 or 2% and CPPU at 5, 10 or 15 PPM. The highest fruit number per panicle was recorded with putrescine followed by CPPU hand a direct relationship was detected in this respect with putrescine. The highest fruit set was scored with both of putrescine and CPPU. Whilst, the lowest one was detected with KNo3 . A direct relationship was found between putrescine concentration and fruit set, reversibly, fruit set decreased with the increase in CPPU and KNo3 concentration. Fruit drop decreased with KNo3 while it increased with putrescine and CPPU. Both of KNo3 and putrescine increased fruit retention at harvest with a direct relationship with the used concentrations .The highest values in this regard were recorded with 2% KNo3 and 450 PPM putrescine.
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