Winter greenhouse heat consumption reduction

Damien de Halleux, Laval University; André Gosselin, Laval University; Xiuming Hao, AAFC Harrow

Damien de Halleux and his team at the Université Laval have developed a successful method of reducing energy costs in the production of potted plants such as poinsettia, hydrangea and petunia. Researchers have found that significant energy reductions of up to 20% can be achieved by a combination of reduced night time temperature, morning CO2 injections and ventilation control. The specific combination of these climatic adjustments enables average temperatures to be maintained at the optimal level and produces more vigorous plants that are ready for holiday delivery dates.