2024 Author: Gavin MacAdam | [email protected]. Last modified: 2023-12-16 13:38
With the arrival of sunny warm days, many summer residents rush to their site in order to plant the planned plants as soon as possible. After all, everyone wants to get a rich harvest of vegetables and fruits, and as early as possible. However, early planting is not always beneficial, and the reason for this is possible spring frosts, which can cause great harm to the planted plants. Frost is considered to be a decrease in air temperature below 0 ° С against the background of a positive average daily temperature. Taking into account the cause of their occurrence, it is customary to distinguish between adequate, radiation and mixed frosts. Based on the temperature exposure, they can be weak, medium, or strong. Many experienced gardeners know that the approach of frost can be predicted by some characteristic natural signs
Signs of an impending frost:
there is a uniform increase in atmospheric pressure;
a cold wind blows right up to sunset;
in the evening, there is a sharp cold snap;
the air is dry, and the previous days were without precipitation;
there is a noticeable difference between morning and evening air temperatures.
So that frosts do not take by surprise and do not harm the plants, you need to carefully monitor changes in air temperature and take all possible preventive measures.
Plant protection methods
The most reliable method of protecting cultivated plants from a destructive drop in temperature is to create a shelter. Under it, stationary warm air is concentrated, which serves as thermal insulation. You should be aware that the denser the shelter, the greater the protection of the plants. Thin material can also be used as it, which must be folded in several layers for greater efficiency. A variety of improvised means can serve as a frame for a shelter: twigs, tree branches, etc. It is advisable to install it as high as possible from the plants themselves in order to increase the volume of airspace. In addition, it must be remembered that contact of the shelter material with plant leaves is highly undesirable. To protect seedlings from frost, agrofibre, spunbond, and lutrasil are used.
Cut plastic bottles and paper caps can be used to shelter freestanding plants.
You can protect plants from frost by using a smoke screen. This method is effective if it is applied immediately when the temperature drops to 2 ° C. The essence of the method lies in the fact that the creeping smoke prevents the cooling of the soil and thereby protects the plants from frost. It is better to carry out this procedure in calm weather in order to prevent fire.
Experienced summer residents prepare for smoking in advance - they collect heaps of dry grass, straw or sawdust around the perimeter of the site.
Plants will better tolerate a drop in temperature if they are fed on time. Most often, phosphorus-potassium fertilizers are used for this, which significantly increase the concentration of cell sap and, as a result, protect plants from frost. In this case, feeding is carried out a day or several hours before the expected frost.
Watering is an equally effective method of plant protection. Water entering the soil displaces air, thereby increasing its heat capacity and thermal conductivity.
However, watering should be done correctly. The fact is that if you water the plants in the evening, then the evaporation of moisture can significantly enhance the effect of frosts, which will lead to their inevitable death. During severe and prolonged frosts, night watering or spraying plants with warm water is considered very effective.
Frost is a very strong stress for any plant, which can negatively affect their growth and productivity. Therefore, the issue of prevention should be taken very seriously, and all the necessary measures should be taken.
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