Greenhouse Climate Control November 17, 2016 – Posted in: Air Movers, Blog, Dehumidifiers

Greenhouses are a vital component in the agriculture industry, allowing a variety of species to be grown outside of their native zones, but it’s not as simple as building a roof over your plants and just letting them grow. Humidity, temperature and soil nutrition are just a few of the factors that must be regulated to ensure optimal plant growth and harvest.

However, humidity is one of the trickiest components to regulate, and due to the nature of greenhouse farming, a certain amount of humidity is required. Too much moisture in the air, though, can easily devastate your vegetation.

Greenhouse Climate Control Micrographic

Creative Commons License
This work is licensed under a Creative Commons Attribution-NoDerivs 3.0 United States License

Problems Caused by Excess Humidity

You do need a certain amount of humidity for your plants to thrive, but too much can cause damage.
Excessive humidity in your greenhouse can create an ideal environment for the growth of mold and mildew as well as the proliferation of fungal infections in the plant’s leaves, stems and roots.

The excess humidity can also cause condensation to collect on the interior of the greenhouse glass. When the condensation falls from the ceiling or the walls, it will splash on the leaves of the plants. While this might seem ideal, it can also potentially spread mold or fungal infections between closely placed plants. With a large crop or a thickly planted greenhouse, this condensation could potentially cost you a large portion of your yield.

What Affects Greenhouse Humidity

There are three primary factors that affect the amount of humidity in your greenhouse:

1. Temperature

Moderating the temperature of the greenhouse is one of the most important things to consider in greenhouse management, but it also influences the relative humidity. When moisture evaporates from the soil, it is held in the air in the form of humidity. Since warm air holds more moisture than cooler air, the cooler nighttime temperatures allow the water to reform as condensation on the greenhouse or on the plants themselves.

By keeping the ambient temperature inside the greenhouse low and moderating the temperature in response to the exterior weather conditions, you can keep the humidity levels in check.

2. Ventilation

Keeping the air flowing is one of the best ways to reduce ambient humidity. A greenhouse without ventilation can easily stagnate, raising the humidity levels and contributing to problems with plant growth. If you’ve ever walked into an unventilated storage facility during summer, you’re familiar with the sensation.

Keeping the air moving, through the use of fans or air movers, is one of the easiest ways to control humidity.

3. Water Management

While watering your plants is essential to their growth and survival, too much water can foster mold or fungus growth and even cause the roots to rot in the soil. Using an automatic irrigation system is a great way to keep your plants watered, especially if you have large greenhouses, but human oversight is what will ensure your plants are watered properly.

Plan to water just enough to prevent excess liquid from pooling in and around your plants. Additionally, watering in the morning is often best because it allows the plants to be dry by the time the temperatures drop in the evening.

Be sure not to overcrowd the plants, either. Inadequate spacing impedes air circulation and can lead to a host of problems for plant health.

Maintain Proper Greenhouse Climate Conditions using Aer Industries Dehumidifiers and Air Movers

Dehumidifiers are the fastest, most affordable and most effective method for ridding your greenhouse of water vapor.

At Aer Industries, we offer a selection of the best greenhouse dehumidifiers available from leading industry brands like B-Air® and BlueDri™.

For the best results, pair an air mover with your dehumidifier. An air mover in your commercial greenhouse can mean better circulation and more efficient dehumidifying.