ISHS Acta Horticulturae 292: Recent Advances in Horticultural Science in the Tropics
EFFECTS OF SALINITY, VAPOUR PRESSURE DEFICIT AND ROOT TEMPERATURE ON GROWTH AND YIELD OF NFT-GROWN TOMATOES |
| Authors: | Mohd. Razi Ismail, S.W. Burrage |
| Abstract:
The effects of salinity, vapour pressure deficit (VPD) and root temperature on growth and yield of NFT-grown tomatoes (Lycopersicon esculentum Mill var. Counter) were investigated. Two levels of each of the factors (salinity 2.5 mS/cm, 8.5 mS/cm.; VPD 0.16 kPa, 0.80 kPa.; root temperature 12°C,22°C) were imposed on the plants. The greatest leaf and root dry weight were observed at high root temperature, low salinity and high VPD. An increase in leaf growth at the higher root temperature did not produce a significant effect on fruit production. Total fruit fresh weight was higher when plants were grown at high VPD and low salinity. The incidence of fruit hollowness was greater at low salinity and high root temperature, but VPD was not a factor determining the disorder. | |
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