Growing in a greenhouse presents the grower with the complicated challenge of growing under a cover, while controlling the climate inside, especially reducing humidity.
Humidity inside the greenhouse is caused by the transpiration process of the plants. Standing water on crops leads to humidity related diseases such as downy mildew, botrytis, alternaria, erwinia, phytophora, clavibacter etc.
By reducing the humidity inside greenhouse, growers can prevent diseases and decrease the use of pesticides and fungicides.
The traditional way to reduce humidity in greenhouses
Traditional ventilation methods to reduce greenhouse humidity are based on opening the greenhouse windows and injecting dry external air into the greenhouse.
Growers spend huge amounts of energy reheating the greenhouse after ventilating, in order to maintain optimal growing conditions. The warm humid air leaves the greenhouse, causing both the heat and the transpired water from plants to be lost to the environment, losing the energy invested. Moreover, heating causes plants to transpire more and thus leads to a further increase of humidity, so the constant ventilation and reheating process leads to a feedback loop, driving energy losses higher.
Global changes made energy consumption a national problem and many governments subsidize energy-saving technologies.
High energy prices and the absence of a real solution forced growers to compromise on the climate conditions in the greenhouse. Mainly on the level of humidity inside the greenhouse.
The problem is much more critical with sensitive crops or high-value crops such as organic crops or medical marijuana when you don’t have the option to use pesticides.
The DryGair solution for greenhouse humidity control
Growers are well aware of the effects of humidity on the quality and quantity of the crops.
Economic impacts are to such an extent, that growers face a constant dilemma. They can either open the greenhouse and ventilate, while exposing crops to lower temperatures and uneven air regimes, or they can keep the greenhouse closed, which encourages humidity driven pathogens to breakout. Both decisions lead to lower quality of yields.
The DryGair solution is a patent protected concept that reduces humidity inside the greenhouses in an energy-efficient manner. By using DryGair, the grower can close the greenhouse and treat the air inside it. It is a unique air circulation concept that creates homogeneous conditions and keeps a controlled environment during cold or humid periods when ventilation can’t reduce the humidity inside the greenhouse or can lead to waste of energy.