The application of gibberellic acid (GA3) to the whole loquat tree from mid-May to early June and fromearly August to the onset of ﬂowering, signiﬁcantly reduced the number of premature ﬂowering shootsper current shoot and per m3 of canopy, and so reduced the total number of panicles per m3 of canopy.The number of vegetative shoots per m3 of canopy was also signiﬁcantly reduced by applying GA3. Theresponse depended on the concentration applied and produced optimal results at 50mg l− 1.Differences inthe number of ﬂowers per panicle and leaves per shootwere not signiﬁcantlymodiﬁed by the treatment.Nevertheless, GA3 applied directly to the developing apex near to ﬂower differentiation reduced thenumber of ﬂowers per panicle by 25–35% and without modifying the morphological characteristics ofthe panicle. Results suggest that less sprouting of lateral buds was largely responsible for the reductionin ﬂowering intensity caused by GA3. Best treatments reduced thinning costs (60%, approximately) ofpremature ﬂowering shoots, slightly increased fruit diameter and signiﬁcantly improved fruit colour andjuice quality, thus advancing harvest date.
|Numero di pagine||5|
|Stato di pubblicazione||Published - 2011|
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