Temperature patterns in a poly-tubeventilated greenhouse

New systems for greenhouse management have been introduced in recent years that necessitate changes in some of the traditional methods of growing greenhouse crops. Evaporative cooling. infra-red heating, elevated levels of C0₂, and positive ventilation may each, if improperly used, result in changes in plant response that are not necessarily to the grower's advantage. When one aspect of a plant's environment is altered, it is necessary to reevaluate the total production system to bring all factors back into balance.