VEGETATIVE GROWTH, YIELD AND FRUIT QUALITY OF 'GALA' APPLE TREATED WITH REGALIS (PROHEXADIONE-CA)
The trial was conducted in a Gala/M.9 orchard and the experiment was designed as a randomized block comprising four treatments (application of prohexadione-Ca: 125 mg-l, 250 mg-l, 2×125 mg-l, and control - without growth regulator). Experiments have been carried out for 2 years (2003, 2004). Application of Regalis® reduced trunk cross-sectional area increment, and cumulative extension shoot growth. The effect increased with increasing concentration, and a greater inhibition was obtained when the trees were sprayed two times. Compared to control, return bloom of Regalis®-treated trees was not affected. No negative effects of treatment with Regalis® on yield per tree were observed, but some reduction of average fruit weight was found.
Zadravec, P., Cmelik, Z., Tojnko, S., Unuk, T. and Schlauer, B. (2008). VEGETATIVE GROWTH, YIELD AND FRUIT QUALITY OF 'GALA' APPLE TREATED WITH REGALIS (PROHEXADIONE-CA). Acta Hortic. 774, 287-290
Malus × domestica, growth inhibition, shoot growth, TCSA, fruit quality