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ISHS Acta Horticulturae 458: International Symposium on Water Quality & Quantity-Greenhouse

SOLUTION TEMPERATURE AND THE UPTAKE OF WATER AND NUTRIENTS BY CUCUMBER (Cucumis sativus L.) IN HYDROPONICS

Authors:   A. Daskalaki, S.W. Burrage
Keywords:   cucumber, root temperature, nutrient uptake, water uptake
DOI:   10.17660/ActaHortic.1998.458.40
Abstract:
The uptake of water and N, P, Ca, K and Mg in cucumber plants growing at 12°C, 20°C, 28°C and 36°C root temperatures was studied in a closed hydroponic system. The ion content was measured in the roots, leaves and stems.

Water uptake, leaf area and total plant growth reached a maximum at a root temperature of 28°C.

The uptake of all the nutrients increased sharply when root temperature was raised from 12°C to 20°C. At root temperatures between 20°C and 36°C uptake of P and Ca continued to increase, whereas N, K, and Mg were little affected.

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