EFFECT OF SITOFEX (CPPU) ON FRUIT SET, FRUIT QUALITY OF ANNA APLLE TREES

Abou Grah, Fatma I. I.; Abd El-Megeed, Nagwa; El-Shereif, H.

doi:10.21608/fjard.2009.197036

EFFECT OF SITOFEX (CPPU) ON FRUIT SET, FRUIT QUALITY OF ANNA APLLE TREES

Document Type : Research articles.

Authors

Hort. Res. Institute, Agric. Res. Center Giza. Egypt .

10.21608/fjard.2009.197036

Abstract

Efficiency of the synthetic cytokinin (CPPU) (N- (2-chloro-4-
pytidyle-N-phenylurea) was studied on Anna apple trees at full bloom,
14 days after full bloom and two time spraying (at full bloom and 14
days after full bloom). CPPU tended significantly to increase the
percentage of fruit set, yield and fruiting, while it decreased fruit drop < br />of all treatments. The best results were obtained by 20 ppm CPPU at
full bloom and 10 ppm CPPU two time spraying in the first season.
While, the 15 pm CPPU at full bloom was the best during the second
season.
Highest fruit weight, fruit size and fruit dimensions were
obtained by 15 ppm concentrations at 14 days after full bloom in the
two seasons. Concerning fruit shape index (L/D), an increase in fruit
diameter than its length due to all conducted CPPU treatments in both
seasons. As well as, acidity and TSS/acid ratio were significantly
improved as a result of all studied treatments when compared to the
control.
It could be concluded that, most of studied treatments resulted in
a positive and significant effect on most studied characteristics, since
(CPPU at 15 ppm at full bloom and 20 ppm at 14 days after full bloom
were the most effective treatments for increasing fruit set and yield as
well as improving the most fruit properties.

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