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The effects of soil treatments with paclobutrazol on sweet cherry and apricot trees


, : The effects of soil treatments with paclobutrazol on sweet cherry and apricot trees. Annali dell' Istituto Sperimentale per la Frutticoltura 1991; 19: 71-77

In trials at Aprilia in 1985-87, applying 3.2, 4.0 or 4.8 g paclobutrazol/tree to cherry cultivar Ferrovia (on Colt rootstock) reduced trunk cross-sectional area, tree height and shoot growth. It increased flower production 3-fold. The 3 paclobutrazol concentrations had similar effects. In apricot Tyrinthos (on Myrobalan rootstock), application of 2.5, 5.0 or 10.0 g paclobutrazol/tree reduced shoot growth by 34, 48 and 54%, respectively, in the first year.

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Related references

Jacyna, T.; Dodds, K.G., 1995: Some effects of soil-applied paclobutrazol on performance of 'Sundrop' apricot (Prunus armeniaca L.) trees and on residue in the soil. Twelve-year-old apricot cv. Sundrop trees were treated with a single soil application of paclobutrazol (PBZ) at 2, 4 or 6 g a.i. per tree. The chemical was applied as a trunk drench (i.e. poured into a 5-cm-deep furrow around the trunk base). Rega...

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Proebsting, E.L.; Mills, H.H., 1985: Cold resistance in peach, apricot, and cherry as influenced by soil-applied paclobutrazol. Low temperature injury to flower buds of several peach and sweet cherry cultivars and to one-year-old shoots of peach and apricot (3 cultivars) during autumn and winter was more severe on trees treated with paclobutrazol (2.5-15 g/tree) than on th...