greenhouse humidity and air environment

Microclimate in the greenhouse – humidity and air environment

Relative humidity in greenhouse (also called greenhouse humidity) and greenhouse air environment are the most important components of the microclimate in the greenhouse.

In the previous article devoted to the microclimate theme of the greenhouse and its components we gave a brief overview of the first two main components of the microclimate in a greenhouse room. They are the incoming light inside the greenhouse and the temperature ranges in the room.

Two other important elements in the formation of the microclimate in the greenhouse construction are the relative humidity and general characteristics of the air environment inside the greenhouse. Together with the previous two these physical phenomena have a direct effect on the formation of the so-called microclimate. It is special climatic conditions in one particular area of ​​space.


Humidity in the greenhouse

Relative greenhouse humidity is the percentage of moisture content in the air. The higher this index the more micro particles of water are in free flight in the air environment of the greenhouse. Since the greenhouse is a closed type structure and the cultivation of crops is the main purpose of the greenhouse it is very important to identify the main role of water to supply the plants regularly. And as the result of the processes described before the humidity in the greenhouse has the property to accumulate inside the greenhouse during some time.

Thermohygrometer for greenhouse humidity measurement

Thermohygrometer for greenhouse humidity measurement

Humidity is not necessary should be perfect environment for growing crop in the greenhouse despite the fact that the high humidity of the natural environment usually promotes the abundant and rich flora (a good example is the jungle of the Amazon). Overall the level of moisture is not always common and beneficial since the most favorable climatic conditions are different for different plants.

The increased humidity in the greenhouse contributes to the development of fungal infections of the plants in particular the mold and other types of mold. The longer the room is in a damp environment the more likely the development of these harmful microorganisms inside your greenhouse.

Too low greenhouse humidity is as harmful as too high. It leads to the drying of the soil which makes irrigation, germination of plants and soil cultivation difficult. Dryness and lack of moisture in the air adversely affect plants and their livelihoods.

It is highly recommended purchasing and to install the device called “hygrometer” for accurately and regularly monitor changes in humidity levels inside the greenhouse. The hygrometer is the device that measures the humidity of the air. It is usually arranged very simply and it is not necessary for you to understand its functionality. Just install this device inside the greenhouse approximately on the average level of the ground not too low but not under the ceiling. This will give you the opportunity always know exactly the level of humidity in your greenhouse.


Air environment in the greenhouse

This term refers to the characteristics of the airspace inside the greenhouse. Simply speaking the air environment in the greenhouse is basically the air. On the one hand plants regularly need the flow of the fresh air because they need carbon dioxide for growth and development. Plants like man gradually absorb all the carbon dioxide contained in the air of the closed unventilated greenhouse room until it remains at all.

For example plants can reduce the carbon dioxide content in the air by half in just one hour if you will take the medium-sized greenhouse. The lack of CO2 is as harmful to plants as the lack of oxygen for people. Plants are not able to grow without this natural gas.

Ventilation in the greenhouse

However the dilemma is that in order to refresh the air in the greenhouse it must be taken from somewhere. The ventilation usually take the air from the outside of the greenhouse but in most number of cases there will be a significant difference between the air temperature inside the greenhouse and outside so the fresh air in the greenhouse will take the accumulated heat.

Therefore the owner of the greenhouse must balance the intake of fresh air into the greenhouse so that plants will always have the required amount of carbon dioxide. It is highly recommended to keep the necessary heat level inside the greenhouse. The easiest way to achieve this is to make the clear daily schedule for the ventilation of the greenhouse.

Tags: , , ,