Weather of Arabia - It is reported that the Kingdom was hit yesterday by a wave of freezing and severe frost that lowered temperatures to below zero degrees Celsius in large areas of the Kingdom, including the Jordan Valley areas. This wave negatively affected the crops and the frost led to severe damage to some agricultural crops,
We review photos and videos of the effects and damages of agricultural crops due to frost in the central Jordan Valley
Frost can be fatal to agricultural crops, but some care and preparation can make a big difference in protecting sensitive plants from freezing. Here are some helpful tips:
Plants in pots can be moved to a warm place away from the danger of frost, taking care that the place is not too warm to not expose the plants to a large difference in temperature, and attention should be paid to plants in containers because they are more susceptible to root damage in cold temperatures and during the occurrence Frost, because they do not benefit from the insulating effect of the earth like the plants in the ground, and once the danger of frost in the morning has passed, all the plants can be brought back outside.
It may seem counterintuitive, but keeping the soil moist can help protect plants from frost. Moist soil has an insulating effect, keeping the heat of the day and radiating it upward at nightfall. When watering plants before a frost spell, be sure to do it in the middle of the day when The temperatures are still fairly warm.
Adding a layer of mulch around the plantings helps protect the soil from sudden fluctuations in temperature. Straw, wood chips, clay mixed with dry leaves, or even just a pile of dry leaves can be used to provide insulation for the underground plant roots.
The mulch should be dense at a depth of 7 to 15 cm, to form a well-insulated barrier, and holes should be left with a diameter of 3 - 6 cm around the central stem of the plant, so that the warmth of the soil can travel up through the plant. Although this is one of the best ways that can be done to keep plants from dropping the temperature, some of this protective cover must be removed when the weather gets hot.
A hedge is a bell-shaped covering made of plastic or glass that helps keep young plants warm and comfortable in cold weather. Plastic containers can be purchased or empty water bottles can be reused.
You can also use various things as an alternative, such as an inverted bucket or flower pot, or you can cut the bottoms of plastic jugs and put them in the soil. When using covers to prevent frost, they should be placed over the plants just before dark, and uncovered in the morning so that they can benefit from the warmth and rays of the sun.
To protect a larger group of plants, they can simply be covered with blankets, bed sheets, towels, or pieces of cloth. Before placing the cloth, several pegs can be placed around the plants so that they form a tent-like structure when covered, reaching up to the soil, being careful not to tie them around the stem or stem of the plant , because this will prevent the heat of the earth from escaping to the plant.
To ensure frost resistance, a final layer of plastic can be added, taking care that no part of the plastic cover comes into contact with the leaves of the plant because the plastic can damage it, and the corners and edges can be fixed with heavy stones or bricks to prevent the covers from flying off at night, this can be done just before dusk However, these covers should be removed first thing the next morning.
Young trees, between 1 and 4 years old, may be more sensitive to frost injury, which may kill them outright, and the buds and blossoms of fruit trees exposed to frost in spring will be damaged and result in a reduced harvest for the rest of the season Citrus trees are tender and sensitive to frost In particular, it must be protected when temperatures drop below -2°C. To protect these trees from frost, trunks can be wrapped with towels, blankets, cardboard, rags, or insulation tubes, and burlap rolls or felted tree protectors can be used.
The winding is started from the base of the trunk, making sure that the layers overlap during the winding, and continue to wrap in this way until reaching the lower branches of the tree, then the cover is fixed to the tree using some threads or a tape resistant to weathering, and if the drop in temperatures continues for a long time, A layer of plastic wrap can be added over this wrap for additional frost protection.
When frost threatens large tracts of farmland, farmers use certain methods to simulate the movement of the winds. One such device is a large fan in a chimney that pulls cold air up and away while drawing warmer air to the ground. Another method is to commission a number of helicopters that fly At a low altitude fly over crops to keep air flowing.
The concept of air movement to ward off frost can be used on a much smaller scale, where an electric fan (when there is no rain) can be used to create an artificial breeze on small spaces on quiet nights, or a powerful blower designed for outdoor use can be used, when the fans are placed in place Indoor to ensure that warm air is drawn in, trying to locate it so that the breeze moves over all the plants in the plot.