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Fig. 4: Soil temperature measured continuously by dataloggers
Fig. 4: Soil temperature measured continuously by dataloggers.
4.1.4 Leaf temperature
Leaf temperature was measured weekly at low solar radiation at 10.00. Leaf temperature fluctuated between 14-20 °C. Leaf temperature was significantly higher in the LED chamber with the increased temperature compared to the HPS chamber. In average was the leaf temperature nearly 3 °C higher in the LED chamber. Differences between varieties were not observed (Fig. 5).