AN EVALUATION OF TREATED WASTE WATER FOR THE PRODUCTION OF NURSERY AND FLORAL CROPS

in HortScience

A survey of five different waste water treatment plants was conducted to identify potential variability in water quality factors. Salinity, pH, and alkalinity varied widely between sites. Mineral content did not differ significantly between sites. Syngonium spp. were subirrigated with four different combinations of treated waste water (TWW) and reverse osmosis (RO) water. Weekly measurements of EC and pH were taken and final height, width, and quality ratings were recorded. Based on these results, a 1 TWW: 1 RO water combination was then used to evaluate four different soluble fertility regimes. Salinity was the most limiting factor in the use of TWW on Syngonium spp. Growth and quality decreased as the percentage of treated waste water increased in each treatment combination. Salable plants were produced using a 1 TWW: 1 RO water combination and 100 ppm (N) fertilizer.

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