ISHS Acta Horticulturae 696: VII International Symposium on Temperate Zone Fruits in the Tropics and Subtropics - Part Two
EFFECT OF SUBSTRATE NUTRIENT LEVELS ON MICRONUTRIENTS UPTAKE BY ROOTS, SHOOTS AND LEAVES OF APPLE |
| Authors: | S.K. Upadhayay, R.P. Awasthi |
| Keywords: | apple, micronutrient uptake, nutrient levels |
| Abstract:
Starking Delicious/MM 109 apple grafts were grown for 120 days in nutrient solution at five levels each of Zn, Mn, Fe and Cu. The grafts were exposed to a photoperiod and dark period of 16 and 8 hours, respectively at 25±4°C at 2500±200 lux and 70±5 per cent relative humidity. The uptake of Zn, Mn, Fe and Cu by the leaves, shoots and roots was influenced by substrate nutrient levels. The maximum uptake was observed in the roots followed by shoots and leaves. The total uptake (leaf + shoot + root) of Zn increased whereas Mn and Fe uptake decreased with the increase in the substrate Zn. Increase in the level of substrate Mn decreased the uptake of Zn beyond 1.0 ppm and Fe uptake beyond 0.5 ppm substrate Mn. The uptake of Zn and Mn decreased with the increase in the level of substrate Fe. The uptake of Zn, Mn and Fe decreased with the increase in the level of Cu beyond 0.25 ppm. | |
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