ISHS Acta Horticulturae 383: Mineral Nutrition of Deciduous Fruit Plants
ROOTSTOCK INFLUENCE ON DRY MATTER AND NUTRIENT ABOVE-GROUND CONTENT AND PARTITIONING IN MARAVILHA PEACH TREES. |
| Authors: | T. Caruso, P. Inglese, D. Giovannini, E. Turci |
| Keywords: | Prunus persica, dry matter, nutrient, partitioning |
| Abstract:
Dry matter and nutrient content and partitioning were determined, at fruit harvest, for above-ground components of five years old, Y shaped ‘Maravilha’ peach trees grafted into Hansen 536 (P. persica x P. amygdalus), Harrow Blood (P. persica), MrS 2/5 (P. cerasifera o. p.), and PS B2 (P. persica). Maravilha/Hansen 536 trees had the greatest growth, yield and fruit size, but the lowest fruit dry matter per unit leaf area. Rootstock did not affect dry matter and nutrient partitioning in above-ground components. One-third of the total dry matter of the canopy components was diverted to the fruits, while leaves accounted for 15% and 1-year old wood for 8–9%. Nutrient concentration varied widely in the different above-ground components, and the highest values were found in the leaves. The lowest nutrient concentration was always in the old wood except for Ca and Mg that scarcely accumulated in the fruits. Trees on Hansen 536 had the highest leaf Ca content, while those on Harrow Blood had the lowest. | |
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