ISHS Acta Horticulturae 179: V International Symposium on Growth Regulators in Fruit Production
FLOWER AND FRUIT THINNING OF VICTORIA PLUM (PRUNUS DOMESTICA L.) WITH PACLOBUTRAZOL |
| Authors: | A.D. Webster, L. Andrews |
| Abstract:
When weather conditions at or around the time of blossoming are favourable the plum cultivar Victoria frequently sets too many fruits. This may result in branch breakage, small fruit size at harvest and poor flowering in the subsequent season unless thinning of the fruitlets is practised. Webster and Quinlan (1984) showed that foliar sprays of paclobutrazol (Cultar), applied to control the shoot growth of Grove's Late Victoria plum, caused severe fruitlet abscission. Further experiments conducted at East Malling Research Station and at Luddington Experimental Horticulture Station since 1982 have demonstrated that paclobutrazol may act as a flower or fruitlet thinner for the plum cultivar Victoria (Webster and Andrews, 1985). | |
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