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Greenhouse offers a controlled environment for growing plants. So a grower can check temperature, humidity or air circulation at any time and adjust as necessary. There are 7 types of greenhouse sensors you can use to do so.

Although primarily you should be monitoring greenhouse temperature and humidity with thermometer and hygrometer, it is very important to measure the temperature of the soil especially before planting. So today we are going to talk how to test the temperature of the soil.

WHAT IS THE AVERAGE TEMPERATURE OF SOIL?
Soil temperature shows how warm the soil is. There is no average soil temperature as such because it is affected by the season, composition of the soil and its structure along with other factors, but you should keep the soil temperature at around 45° to 70°F (7°-21°C) for successful plant growth.

WHY TO MEASURE SOIL TEMPERATURE?
Soil temperature is an essential measurement for the optimal plant growth. Moreover, soil also absorbs heat during the day and releases it at night. The same principal applies to the seasons, so in spring and summer soil absorbs warmth and stores energy to then release it during the autumn and winter.

The importance of soil temperature is in its impact on seed germination, it also drives nitrification, directly affects the humidity of the soil as well as its aeration and makes nutrients available to be absorbed by plants.

WHAT TIME OF DAY SHOULD YOU MEASURE SOIL TEMPERATURE?
You should measure the temperature of the soil in the first part of the day. The ideal time would be early in the morning (9-11 AM) because later in the day sun will warm the soil and before that it is still going to be cold from the night frosts.

When growing plants in a greenhouse I would recommend taking measurements two times a day, once in the morning and then late in the evening to make sure that the temperature does not go below the minimum threshold.

Read more: THE BEST WAY TO TEST SOIL TEMPERATURE IN 4 STEPS