EFFECTS OF CPPU (CYTOKININ) ON TABLE OLIVE TREES (CV. ASCOLANA TENERA) UNDER NONIRRIGATED AND IRRIGATED CONDITIONS

E. Antognozzi, P. Proietti
A trial was carried out to determine the effects of CPPU at 20, 60 and 120 ppm, 2 weeks after full bloom on adult trees of "Ascolana tenera" in nonirrigated and irrigated conditions. CPPU increased fruit fresh weight by 39% in nonirrigated conditions and 37% with irrigation, corresponding to a volume increase of 29% and 35%, respectively. The treatments did not influence the water content of the mesocarp. Irrigated trees produced larger drupes and with a higher water content with respect to those of the nonirrigated treatments. CPPU increased fruit drop slightly in both nonirrigated and irrigated conditions, while in nonirrigated conditions at 60 and 120 ppm, it caused a slight reduction in yield per tree. CPPU increased the pulp/pit ratio in all treatments. Pulp firmness and qualitative fruit characteristics recorded before and after processing were not influenced by treatments. CPPU stimulated shoot growth in nonirrigated conditions, while in both nonirrigated and irrigated conditions it did not influence photosynthetic activity, stomatal conductance, transpiration, intercellular CO2, specific weight, carbohydrates and chlorophyll and water content in leaves. In conclusion, CPPU was very effective in improving the size both in nonirrigated and irrigated conditions and the best results were obtained at 20 ppm.
Antognozzi, E. and Proietti, P. (1995). EFFECTS OF CPPU (CYTOKININ) ON TABLE OLIVE TREES (CV. ASCOLANA TENERA) UNDER NONIRRIGATED AND IRRIGATED CONDITIONS. Acta Hortic. 379, 159-166
DOI: 10.17660/ActaHortic.1995.379.18
https://doi.org/10.17660/ActaHortic.1995.379.18
Table olive trees, CPPU, Nonirrigated and irrigated conditions, Vegetative and productive activity

Acta Horticulturae