Despite the fact that tomatoes are heat-loving plants and grow in greenhouses, high temperatures are critical for them.
We will tell you at what air temperature you will have to take measures to save seedlings and how to do it.
Temperature
The soil temperature should be within 14-25 degrees Celsius. Sharp fluctuations are unacceptable.
To control the temperature, you need to keep one thermometer in the greenhouse at the very ground, another at a height of 1-1.5 meters, and a third directly under the roof.
At air temperatures of +10 and above +35 degrees, tomatoes will die.
How to save from overheating
It is enough to keep the seedlings in a closed greenhouse in the heat for 4-6 hours during the day, and overheating is guaranteed.
First the color of the leaves will change, then the flowers and ovaries will fall off. At the same time the soil will dry out.
Tomatoes are saved from overheating in a greenhouse by mulching, as well as by covering them on the walls outside the structure.
On the sunny side, the walls of the greenhouse are covered with paper, cardboard, white cloth, or painted with lime.
Don't forget about ventilation. But at night you need to close the doors and vents to prevent temperature fluctuations between the soil and air.
