Harvesting in the garden is a joyful occasion. People reap the fruits of their labor and prepare for the winter. After the harvest, the work in the garden isn't over. Trees, shrubs, and plants need to be carefully prepared for winter. They require effective disease prevention. Autumn pest and disease treatments have become such a preventative measure. urea.
What is urea?
Urea is a product of the synthesis of two chemicals. Its formula includes ammonia and carbon dioxide. It is also called carbamide. It appears as white granules. The granules have a crystalline structure and are odorless. This nitrogen-containing compound is useful for the following types of garden crops:
- apple trees;
- plum;
- apricot;
- gooseberry;
- strawberries, wild strawberries, raspberries;
- all vegetables.
You can also use alcohol and ammonia in the garden.
What does urea treatment provide?
Urea has found application in gardening as an organic fertilizer with mineral components. This concentrate acts quickly and retains its properties for a long time. It also dissipates quickly. Urea should be applied not only to tree foliage and trunks, but also to the soil. For the same reason, it is added to greenhouse and hotbed soil. When used correctly, the substance stimulates plant growth and development, providing them with the nitrogen they need to thrive.
Treating trees with urea in the fall is safe. In the fall, foliage will not burn if the concentration is slightly higher than normal. Trees and plants absorb nitrogen better after harvest: all crops lose a lot of energy during the summer season. They need nutrients to support them as they enter a state of suspended animation.
Urea inhibits vegetation and prevents early flowering in the spring. Some varieties of plums, apricots, and peaches ripen early. For these, autumn treatment is necessary to prevent them from blooming during the dangerous spring frosts.
Urea treatment kills harmful insects and fungal spores. If there are old tree stumps on the property, urea will help remove them. It accelerates the decomposition and rot of the stumps.
Features of nitrogen prevention in autumn
When spraying your garden with urea in the fall, you need to follow a few rules. The soil should be thoroughly loosened, and old bark and dead branches should be removed from the trees. The treatment should be carried out in good weather, on a clear, windless day. For a thorough spraying, it's best to buy a spray bottle. It's very convenient: you can reach even the tallest tree with it.
When working with urea, be careful about the amount of the substance coming into contact with trees, plants, and soil. It's important to follow the instructions for its use to avoid harming garden crops.
If urea treatment is carried out in the fall, there is a high risk of rain or other precipitation. After rain, the treatment will have to be repeated, as water washes away all the beneficial substances. Trees should be sprayed during the second phase of leaf fall or after this phase has ended.
How to prepare urea for spraying
Preliminary calculations indicate that approximately 0.5 kg of urea is needed per 10 liters of water. The mixture is mixed and filtered through cheesecloth 2-3 times.
A solution of 700 g of urea and 50 g of copper sulfate diluted in 10 liters of water is effective against diseases caused by harmful insects. The mixture nourishes the soil and kills all pests.
Pest control
Processing of apple trees and other fruit trees in the fall, apply the same amount as described above (0.5 kg of solution per 10 liters of water). If there are a lot of insects, calculate how much solution is needed to treat 10 m² of garden space. Typically, this is 2.5-3 liters of solution. This amount is sufficient for prevention and destruction of pests remaining in the soil after the summer.
Elimination of diseases
Spraying the garden with urea helps eliminate the following diseases:
- all types of spotting;
- scab;
- monilial burns.
The solution is diluted to the same concentration used for insect control. The solution is sprayed onto the leaves of trees and shrubs. Fungal spores in the sprayed foliage quickly die.
Preliminary work
Before spraying fruit trees with urea, pay attention to their bark. Remove diseased areas of the bark to allow the substance to penetrate into areas where pests may be hiding. Leaves on trees and bushes do not need to be plucked, even if they show signs of disease. Leaves sprayed with ammonia make useful compost for the garden. Dead and diseased bark can be removed with a wire brush.
Scale of wood processing
So, when treating trees with urea solution, spray:
- trunk;
- crown;
- foliage;
- areas under the bark;
- fallen leaves;
- the soil around.
If you carefully follow this algorithm, you can be sure of the effectiveness of the solution.
Safety precautions
When working with urea, observe safety precautions. The gardener wears a respirator or a mask made of several layers of gauze. Eye protection and thick rubber gloves are also required. After finishing work, hands and face should be washed under running water. Shoes should be thoroughly cleaned, and clothes should be washed.
Application to soil
If garden crops lack nitrogen, they grow poorly, and their foliage turns yellow and curls. In severe cases, critical yield drops and early fruit drop are observed.
You may be interested in:There are several dosages of urea that are used when treating gardens and vegetable plots with urea:
- potatoes, onions, tomatoes, all types of cabbage, peppers - from 20 to 25 g per 1 m2;
- cucumbers, all types of legumes - from 5 to 8 g per 1 m2;
- gooseberry - 10 g of substance per 10 liters of water;
- blackberries, strawberries, wild strawberries - 35 g of urea per 10 liters of water (1 liter of solution for each bush);
- for zucchini and eggplant you will need 10 to 12 g of urea per 1 m2;
- for currants - 20 g per 10 l of water.
Timing of urea treatment in autumn
It's best to begin treatment in late autumn, when the leaves have fallen from the trees. Gardeners consider late October and early November to be the optimal time. At this time, pests begin preparing for winter, so they need to be eliminated as quickly as possible.
Reviews
Vitaly (Rostov):
"This summer, my apple orchard was attacked by scale insects. We managed to save the crop, but I was afraid the pest would reappear next year. A friend recommended treating the trees with urea. I've always been against chemicals, but he explained that urea is an organic compound with mineral elements. Last fall, I treated all the apple trees, paying close attention to every detail. I sprayed the foliage, the bark, and even the ground around the trees. I whitewashed the trunks of the apple trees. In the spring, the trees seemed to come alive; the blossoms were simply magical. The apples grew huge and juicy, and the pests were no longer so numerous."
Elmira (Kazan):
"I have a garden plot with gooseberry bushes. Over time, the berries became smaller. Later, I noticed my gooseberries were becoming quite frail: the leaves were turning yellow prematurely, falling off, and curling. It turned out they weren't getting enough nitrogen. In the fall, I treated all the bushes with urea. Before applying the fertilizer, I thinned the bushes and trimmed off any dead or diseased branches. The following year, the gooseberries turned green, as if for the first time. The berries weren't very large, but there were many more of them. From now on, I'll be doing this treatment regularly every fall."
Urea, or carbamide, is a beneficial substance essential for trees, shrubs, and plants. When applied regularly and correctly, it will kill all pests and help preserve crops.

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