الفهرس 
Introduction
measures to control biennial bearingOnly 14 pages are availabe for public view
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Abstract
The study was carried out at the Experimental Orchard of Assiut University during four successive growing seasons started on January, 1986.
Balady mandarin (Citrus reticulata, L.) trees, 9 years
old on sour orange (Citrus aurantifolia, L.) rootstocks
were used in this investigation. Such cultivar is known as
a strong alternate bearer. Trials to regulate bearing in
this cultivar were performed through:
1 - Provide adequate fruit thinning during on-flowering season by certain growth regulators to ensure adequate flowering the following off—year and to improve those left to become larger and of better quality. Stimulate more vegetative growth together with minimize heavy bearing during on—year by applying some horticultural practices, i.e., pruning, girdling and heavy nitrogen fertilization.
Minimizing heavy flower bud formation during the induction period by spraying GA3 in order to obtain appropriate number of flowers during the subsequent “On” year.
Accordingly, five field experiments were successively carried out during the following seasons: