Evaluation of spiking orchid production in environmental controlled chamber with artificial light
Journal
Conference Proceeding - 5th International Conference, TAE 2013: Trends in Agricultural Engineering 2013
Pages
234-238
Date Issued
2013
Author(s)
Abstract
Moth orchids can bloom year-round under a cool environment, normally inside air-conditioned greenhouses. The flower forcing of orchid is a time and energy consuming process. The commercial potted orchid growers in Taiwan usually entrust orchids to other greenhouses in mountain area for spike induction to reduce the electricity cost and to increase turnover rate of their own greenhouses near urban area. However, entrusting orchids to other greenhouses results in the management of inconvenience and inconsistence, loss in transportation, and the transportation cost, etc. The objective of this study was to investigate the effects of artificial light used during spike induction on the orchid spiking and flowering. Two experiments, light quality and lighting regimes, for 45-day spike induction were conducted in an environmental controlled chamber under the temperature of 26 ?C day /18 ?C night. The results show that the white light with color temperature 5000 K was better than the other two white light source, 2700 K and 10000 K, in days to anthesis and flower quality. Under the same daily light integral, the longer photoperiod with lower light intensity advanced the flower development compared with the shorter photoperiod with higher light intensity. Lower light intensity means less artificial light installation and less investment. The greenhouse turnover rate by using the proposed method of spike induction in environmental controlled chamber was 4.5 crops/year, which of the current method in air-conditioned greenhouse from spike initiation to anthesis was only 2.3 crops/year. This proved the practical potential to replace the entrusting spike induction in greenhouses by environmental controlled chambers with artificial light. © 2013 Czech University of Life Sciences Prague.
Subjects
Artificial light environmental controlled chamber; Orchid
SDGs
Other Subjects
Agricultural engineering; Air conditioning; Biodiversity; Environmental chambers; Greenhouses; Investments; Light sources; Plants (botany); Artificial light; Color temperatures; Daily light integrals; Electricity costs; Flower development; Orchid; Transportation cost; White light sources; Quality control
Type
conference paper