Abstract
Abstract ‘Coral Sea’ petunia plants were irrigated at “low” frequency (surface media dry, soil moisture = −4 to −10 bars), “normal” frequency (surface media moist, soil moisture = −0.8 to −3 bars) or “high” frequency (surface media wet, soil moisture > −0.6 bars) during production. Postproduction quality was evaluated under cool (10°C day, 10° night), moderate (20° day, 20° night), or hot (30° day, 20° night) temperature postproduction environments. Frequency of irrigation was not significant when plants were placed in cool postproduction environments. In moderate or hot postproduction conditions, plants irrigated with high frequency declined in quality most rapidly. Low moisture-treated plants had slower flower development and senescence, greater dry weight, and better overall visual quality than plants with other moisture treatments.
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