ACTUAL EVAPOTRANSPIRATION OF ASPLENIUM NIDUS AND CHAMAEDOREA ELEGANS DURING PRODUCTION FROM LINERS TO MARKETABLE PLANTS
Asplenium nidus and Chamaedorea elegans are important ornamental foliage plants, but their daily water use during production was unknown. To guide the industry to becoming more water conserving, actual evapotranspiration (ETA) of A. nidus and C. elegans from liners grown in 15-cm containers to marketable sizes in a shaded greenhouse were measured daily using a suspension lysimeter system. Mean cumulative ETA was 7.95 liters for A. nidus during its 294 days of growth. Mean ETA generally ranged from 12 mL to 24 mL the first 60 days after transplanting on December 27, peaking near 48 mL per day in late April 2006 (Day 180). Thereafter ETA ranged from 18 to 30 mL per day throughout the summer and into fall until marketable size was obtained in the mid-October. During its 280 days of growth, C. elegans had a mean ETA of 6.43 liters per plant. The crop was started in mid-September of 2008 and exhibited declining mean ETA with time. Mean daily ETA declined from around 24 mL per day near transplanting to around 12 mL per day in early December (day 80). Mean ETA increased over the following 140 days thereafter to around 39 mL per day, peaking near 54 mL per day near harvest in June 2009 (day 280). Models to predict daily ETA were based on planar horizontal projected canopy area, the percent canopy closure and potential evapotranspiration measured inside the greenhouse. The best fit models for predicting daily ETA rates of the two species produced r2 values of 0.89 and 0.84 for A. nidus and C. elegans, respectively.
Chen, J. and Beeson Jr., R.C. (2013). ACTUAL EVAPOTRANSPIRATION OF ASPLENIUM NIDUS AND CHAMAEDOREA ELEGANS DURING PRODUCTION FROM LINERS TO MARKETABLE PLANTS. Acta Hortic. 990, 339-344
actual evapotranspiration (ETA), Bird's Nest Fern, foliage plants, Neanthe Bella palm, irrigation, water use