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Temperature and Humidity Control in Greenhouses
Temperature and Humidity Control in Greenhouses is very important for the efficiency of greenhouses and the health of plants. Proper temperature and humidity levels provide plants with optimal growth conditions and reduce the risk of disease. Temperature control in greenhouses is generally provided by ventilation systems, heaters, and cooling systems. Humidity control is carried out through humidifiers and dehumidifiers. Especially automatic systems constantly monitor temperature and humidity via sensors and make necessary adjustments. Thus, by creating the microclimate that plants need, a healthier and more productive production environment is ensured. As Esular, we offer advanced systems to control optimal temperature and humidity in your greenhouses. Our high-precision temperature and humidity sensors monitor the climatic conditions of your greenhouse instantly and maintain ideal levels with our automatic control systems.
What is the Effect of Temperature and Humidity on Plants?
Humidity:
Photosynthesis and Transpiration: Humidity is essential for the photosynthesis and transpiration processes of plants. Adequate humidity ensures that stomata remain open, facilitating carbon dioxide uptake and water vapor release.
Cell Turgor: The turgor pressure of plant cells is maintained by adequate humidity. This pressure ensures that plants stand upright and maintain structural integrity.
Nutrient uptake: High humidity levels increase the absorption of nutrients from plant roots. This supports plant health and growth.
Diseases and pests: High humidity can lead to the spread of fungal and bacterial diseases. On the other hand, low humidity levels can prevent the spread of some pests.
Temperature:
Photosynthesis and respiration: Temperature directly affects the rate of photosynthesis and respiration in plants. While the rate of photosynthesis increases in the optimal temperature range, extreme temperatures can cause plants to enter stress and decrease the rate of photosynthesis.
Growth and Development: Every plant has an optimal growth temperature range. Temperatures outside this range can slow down or stop plant growth.
Flowering and fruiting: Temperature directly affects the flowering and fruiting processes of plants. A certain temperature range ensures that these processes occur healthily.
Enzyme Activity: Most enzymes in plant metabolism exhibit maximum activity within a certain temperature range. Extreme temperatures can damage the structure of enzymes and negatively affect plant metabolism.
Humidity and temperature are critical environmental factors that directly affect plant health and productivity. To ensure that plants photosynthesize, grow, flower, and stay healthy, optimal humidity and temperature levels must be maintained. Therefore, regulating humidity and temperature in greenhouses is of vital importance for the efficient and healthy development of plants.
The Role of Climate Control Systems in Humidity Control
Climate control systems play an important role in protecting greenhouse productivity and plant health. These systems control humidity levels, ensuring that plants remain in optimal growth conditions. Integrated systems constantly monitor environmental conditions with temperature and humidity sensors. When sensors detect that temperature or humidity has risen to unusual levels, they automatically activate the ventilation system. This is achieved by opening windows and doors inside the greenhouse, allowing excess moisture to escape. Additionally, ventilation systems play an important role in temperature regulation. For example, when the temperature rises too high, ventilation fans inside the greenhouse are activated, preventing plants from overheating by maintaining a cool airflow. This integrated system creates a stable microclimate necessary for the healthy development of plants. Thanks to these smart systems, greenhouse owners can save energy while optimizing plant health. You can contact us for more information and solutions suitable for your needs.
What is a Humidity Temperature Sensor?
A wireless battery-operated humidity temperature sensor is a device designed to determine the humidity level and temperature of the environment. It is generally used in plant growing environments such as greenhouses. This sensor is powered by a 3.6V lithium-ion battery and does not require an external power source, which makes installation and use easy. The sensor has a single input and regularly measures environmental humidity and temperature levels through this input. Measured data is transmitted to the server using wireless communication technology. In this way, users can monitor the current state of the environment by providing remote access and intervene when necessary. The data provided by the sensor facilitates the management of the area where it is applied. For example, it becomes possible to monitor humidity and temperature levels and take measures such as irrigation or ventilation when necessary to ensure optimal growth conditions for plants. This makes the plant cultivation process more efficient and improves crop quality.
What Should Temperature and Humidity Values Be in a Greenhouse?
Optimal Temperature and Humidity Conditions in Greenhouses
1. Temperature conditions inside the greenhouse: Day and night temperature intervals according to plant species are as follows:
| Plant Type | Germination Period (°C) | Development Period (°C) | Harvest Period (°C) |
|---|---|---|---|
| Cucumber | 17-18 | 17-18 | 18-20 |
| Melon | 17-18 | 17-18 | 18-20 |
| Watermelon | 17-18 | 17-18 | 18-20 |
| Tomato | 10-12 | 10-13 | 15-17 |
| Pepper | 10-12 | 10-13 | 15-17 |
| Bean | 10-12 | 10-13 | 15-17 |
| Lettuce | 8-9 | 8-12 | – |
There should be a 5-8°C difference between day and night temperatures inside the greenhouse.
Temperatures should not fall below 15°C on cold days and should not exceed 30°C on sunny days.
Temperature inside the greenhouse is controlled by heaters and sunlight.
2. Root zone temperature: In plant growth, root zone temperature is important for bud formation and flowering.
Soil temperature affects the development of the plant root system. If optimal values are not followed, efficiency and quality may decrease.
3. Relative humidity conditions inside the greenhouse: Recommended relative humidity values according to plant species:
Plant Type | Optimal Relative Humidity (%) |
|---|---|
| Cucumber | 85-95 |
| Melon | 65-75 |
| Watermelon | 65-75 |
| Tomato | 50-60 |
| Pepper | 50-60 |
| Bean | 50-60 |
| Lettuce | 70-80 |
| Celery | 70-80 |
| Spinach | 70-80 |
| Parsley | 70-80 |
| Cabbage | 65-75 |
Optimal relative humidity values may vary depending on the plant species grown, greenhouse temperature, and lighting intensity.
High relative humidity can create a favorable environment for pathogenic organisms; low relative humidity can cause water loss and wilting in plants.
4. Soil Moisture Conditions:
It is important that water is above the wilting point and close to field capacity.
By mulching the soil (plastic covering) and regular hoeing, soil moisture is preserved and evaporation is reduced.
These conditions are essential to support the healthy development of plants and obtain optimal yields. Indoor climate management should be organized to meet the requirements of plant species.
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