ISHS Acta Horticulturae 465: IV International Peach Symposium
ARMOTHIN®, A PEACH BLOSSOM THINNING AGENT: 5 YEARS OF EXPERIENCE |
| Authors: | G. Baroni, G. Costa, A. Ramina |
| Keywords: | Prunus persica, flower, fruit, poly-fatty acid amine |
| Abstract:
Armothin®, a poly-fatty acid amine, was used as bloom thinning agent in peach through the 1992–96 period. During the first two years, trials were carried out on Springcrest and Spring Lady in which optimum concentration and time of application were assessed. As general trend, results indicated that the thinning action of the chemical is concentration-dependent and negatively related to the % of open flowers. The best cropping in both cultivars was obtained with sprays performed at the end of bloom (80–100% of open flowers), using Armothin® at a concentration ranging between 1.5 and 2%. The chemical did not negatively affect the fruit and shoot growth dynamics. Spring Lady appeared to be more sensitive than Springcrest. On the basis of the results obtained in Springcrest and Spring Lady, during the following three years, trials were performed on a larger field scale and extended to other cultivars such as Redhaven and Romea. | |
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