Articles
IMPACT OF IRON CHLOROSIS ON MACRO- AND MICRO-NUTRIENT BUDGETS IN PEACH
Article number
721_11
Pages
99 – 104
Language
English
Abstract
Fertilizers are used on fruit trees to maintain an adequate nutritional status.
In this paper an estimation of the amounts of macro- (N, P, K, Ca and Mg) and micronutrients (Fe, Mn, Cu and Zn) required over one year in a peach tree is presented, by measuring the amounts lost (per tree) in four major nutrient removal events: winter pruning, flower abscission, fruit harvest and leaf fall.
This is a first attempt to obtain a framework for the macro- and micronutrient needs of an average peach tree in a typical Mediterranean orchard.
Samples from three very different peach orchards (Prunus persica L. Batsch) grown on calcareous soils were used for this estimation.
The macronutrient yearly needs (in g tree-1) were estimated for the chlorotic trees to be in the ranges 120-220 for N, 9-30 for P, 150-260 for K, 70-220 for Ca, 15-50 for Mg, 0.4-1.1 for Fe, 0.2-0.5 for Mn, 0.2-0.6 for Cu and 0.1-0.3 for Zn.
In the case of control (healthy trees), the yearly nutrient demands were considerably higher, in the ranges 230-360 for N, 23-40 for P, 330-500 for K, 100-415 for Ca, 24-85 for Mg, 0.6-1.8 for Fe, 0.4-0.7 for Mn, 0.3-0.8 for Cu and 0.2-0.4 for Zn.
In this paper an estimation of the amounts of macro- (N, P, K, Ca and Mg) and micronutrients (Fe, Mn, Cu and Zn) required over one year in a peach tree is presented, by measuring the amounts lost (per tree) in four major nutrient removal events: winter pruning, flower abscission, fruit harvest and leaf fall.
This is a first attempt to obtain a framework for the macro- and micronutrient needs of an average peach tree in a typical Mediterranean orchard.
Samples from three very different peach orchards (Prunus persica L. Batsch) grown on calcareous soils were used for this estimation.
The macronutrient yearly needs (in g tree-1) were estimated for the chlorotic trees to be in the ranges 120-220 for N, 9-30 for P, 150-260 for K, 70-220 for Ca, 15-50 for Mg, 0.4-1.1 for Fe, 0.2-0.5 for Mn, 0.2-0.6 for Cu and 0.1-0.3 for Zn.
In the case of control (healthy trees), the yearly nutrient demands were considerably higher, in the ranges 230-360 for N, 23-40 for P, 330-500 for K, 100-415 for Ca, 24-85 for Mg, 0.6-1.8 for Fe, 0.4-0.7 for Mn, 0.3-0.8 for Cu and 0.2-0.4 for Zn.
Authors
R. Grasa, I. Claveria, M.P. Paniagua, J. Abadia, A. Abadia
Keywords
Prunus persica, nutrient budget, mineral nutrition, iron chlorosis
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