We frequently hear from growers that during the winter time diseases appear on their crops.

The question is why?

The relative humidity (RH) is the ratio of the amount of water in the air relative to the amount of water the air can contain at a given temperature.

The dew point is the temperature at which water vapor transforms into liquid water. When the air inside the growing facility reaches the dew point, drops of water form and appear on the coldest objects in the facility (physics law) which in most cases are the plants and the facility’s inner structure/windows/glass.

During winter, the temperatures are relatively low and the air can “hold” a smaller amount of water which subsequently leads to high relative humidity. When the relative humidity is high and the temperature is low the dew point can be reached, which means, drops of water will appear on the plants and on the greenhouse inner structure creating a wet growing environment which may lead to the appearance of a variety of humidity diseases.

Diseases such as botrytis and Downy mildew develop in high humidity conditions. It is always more difficult, sometimes even impossible to treat these diseases after they appear and there are times that the appearance has shown only after the harvest.

So it is desirable and much more effective to prevent their occurrence by eliminating the trigger, which is the high level of humidity.

DryGair treats the humidity while keeping the temperatures high, how?

The cold season presents different challenges to the agriculture industry.

One of these is growing in conditions of high humidity while the temperatures are low.

Using DryGair, growers can, and in fact, should close their growing facility, thus keeping the energy inside. The temperature inside the facility rises since no cold external air is inserted into the facility (how much- depends on the facility’s insulation level). The DryGair takes the humid air, condenses the water while keeping all the latent heat inside the facility and then returns the dry and warmer air back into the closed facility. Moreover, the air returns in a uniform circulation.

The global demand in our world today requires growing all year round, also during the winter. In order to grow in the winter one have to be able to control the climate condition inside the growing facility. Using DryGair offers you the ability to insulate the growing facility and to create optimal homogenous climate condition.

Using DryGair also supports the global demand for higher quality produce. DryGair helps the grower meet these demands by enabling him to control the humidity inside the growing facility, reduce the risk of humidity diseases and create the optimal growing environment even during the cold winter.