Why leaves on a cherry turn yellow in July and how to treat a tree correctly

The foliage on healthy cherries turns yellow and falls off in the fall. But if it changes its color in the summer, this indicates problems that can be caused by various reasons. We will figure out what to do if the leaves on the cherry turn yellow in July, how to treat the plant and what preventive measures to take. In the meantime, there is no need to know about it. ”

Causes of yellowing of cherry leaves in July

There are several reasons why the leaves turn yellow:

• deficiency of nutrients in the soil;
• various diseases;
• pests;
• errors in landing and leaving.

If you do not take action in time, you can lose the entire crop or tree., which will begin to dry and die.

Lack of nutrients

Sweet cherry needs regular feeding during the entire growing season... If they are forgotten or the dosage is not observed, there is a lack of nutrients.

If the soil for cherries is not entirely suitable, contains an excess of chalk or lime (alkaline), then the plant does not absorb nutrients well. As a result, the tree weakens, develops poorly, the foliage turns yellow, and the shoots dry up.

How to determine which minerals are lacking in a plant:

1. If there is not enough nitrogen in the soil, the leaves of the cherry are small, pale green or yellowish.
2. With a phosphorus deficiency, the shoots of the plant are short and dry, the leaves are narrow, their color changes.
3. If the soil lacks potassium, the foliage becomes gray, yellow-brown dots appear on some specimens.
4. The lack of calcium is evidenced by the dying off of young greenery on the trees.
5. If there is not enough boron, chlorosis occurs, in which the veins on the leaf plates turn yellow and they curl.
6. When the sheet becomes brittle and brittle, changes color, then there is a zinc deficiency.

Reference. Excess fertilizer is harmful to the plant. If in July the leaves begin to fly around the cherry, this may indicate that the tree has been overfed with nitrogen-containing dressings.

Diseases

There are no varieties that are completely protected from various diseases.therefore it is recommended to regularly inspect the trees. Timely treatment will preserve the crop and the plant itself.

Coccomycosis

Coccomycosis refers to fungal diseases... It is common in central Russia... It affects both young and adult trees. First, small spots of red and brown appear on the cherry leaves. Then they merge into one large spot.

it leads to a 2-fold decrease in the chlorophyll content in the plant, as a result of which the tree loses its ability to retain moisture... The foliage turns yellow, falls off in the middle of the summer period. Plant immunity decreases, biological processes are disturbed.

Moniliosis

Moniliosis, or fruit rot, is a fungal disease... Distributed in regions where it is damp and cool in the spring. The fungus infects cherries during flowering.

The main signs of the disease include:

• sluggish leaves that turn yellow and dry out;
• fading flowers;
• decaying fruits;
• the ends of the shoots, similar to burnt;
• gray growths on the bark.

Verticillosis

Verticillosis is a dangerous fungal disease that causes the plant to dry out... Usually affects young seedlings. At first, the leaves begin to curl along the vein. The blossoming buds wither. The berries that have set are not able to ripen.Then the leaves turn yellow, the tree sheds its foliage and becomes bare.

Scab

Cherry scab refers to fungal diseases that harm the crop... On the affected tree, the leaves are covered with yellow spots. Then they darken and crack. The spread of the disease is facilitated by high humidity, dense plantings and lack of sunlight.

Chlorosis

Chlorosis is a non-infectious disease... The main signs are yellowed leaves that fall off in summer. Most often, the disease affects trees growing on alkaline soil, on soils with a high level of groundwater with a mismatch between the rootstock and the scion of the seedling.

Chlorosis may occur after the plant freezes during a snowless winter... Cherry is subject to disease due to a lack of moisture during heat waves and when there is an excess of moisture during heavy rains.

Pests

Pests are another cause of yellowing and falling foliage. In order to preserve the crop and plant, insects must be detected and destroyed in a timely manner. Most common:

1. Chafer. It lays the larvae in the roots of the tree. They look like small, thick caterpillars with small legs. The length of the insects is from 1.5 to 4 cm.
2. Ants. Place the anthill in the roots. They can be found in the burrows at the base of the plant.
3. Cherry aphid. This insect sucks the juice from cherry leaves. They look for aphids on the tips of branches and young shoots. The size of the pest is no more than 2 mm, so it is difficult to detect it.
4. Slimy sawfly. It feeds on plant sap. The size of the insect is from 4 to 6 mm, the color is black or brown.
5. Bark beetle. Gnaws through the bark of a tree and provokes infection of cherries with a fungus.

Agrotechnical errors

Cherry leaves turn yellow, may dry out and fall off in the middle of summer due to non-compliance landing technology and growing... This leads not only to loss of harvest, but also to the death of the crop.

Most common agricultural mistakes made by inexperienced summer residents:

1. Plants are planted on acidic soils (cherries like neutral ones).
2. Do not respect the distance between plantings up to 2 m.
3. Cherries are planted in dark places.
4. Irrigate irregularly or use cold water.
5. They do not fertilize the soil or do not comply with the feeding norms, creating an excess or deficiency of essential trace elements.
6. Pruning is rarely done, which leads to a thickening of the crown.
7. Use dirty garden tools.
8. They do not loosen or mulch the soil under cherry sawdust or hay.
9. Do not remove leaves and weeds under the tree.

What to do, how to save a tree

If the reason for the yellowing of leaves on cherries is the soil dries out, the tree begins to be watered regularly. Nutrient deficiencies are replenished by feeding the trees with phosphorus, ash or potassium.

When yellowing and dropping occurs due to fungal diseases, take the following measures:

• after harvesting, the tree is sprayed with 1% Bordeaux liquid (100 g of copper sulfate, 150 g of quicklime per 10 liters of water);
• the affected branches are cut and burned;
• the sections are treated with a special composition, which is made from a lime solution with the addition of iron (3%) or copper sulfate (1%).

Reference. In case of coccomycosis, the tree is recommended to be treated with "Skor". To do this, dilute 1 ampoule per 10 liters of water.

Also, chemicals are used for diseases and pests., for example, "Horus", "Kaptan", "Strobi", "Gamair". They are used for treatment and prevention. The funds are used in accordance with the instructions on the package. If whole shoots are affected by disease or pests, they are removed and burned. Then the plant is treated with a solution of mustard (100 g of powder per 10 liters of water). Spraying is carried out in the morning. This remedy strengthens the immune system of sweet cherries, helps her to recover.

If the main problem with yellowing is insect pests, then first they try to remove them by hand, after which the tree is processed. Special tapes-traps are used, insects are washed off with water from a hose, then the soil is poured with boiling water.

Minks of ants are poured with a decoction of wormwood or wild mint, or the trunk of a tree is smeared with tar. Also use the "Anteater". May beetle larvae are dug out of the ground and destroyed. Lupines, which are planted next to cherries, help to get rid of them. Its roots are poisonous to the insect.

To cure a plant from chlorosis, an integrated approach is used.which improves the condition of the root system:

• watered cherries with soft water from natural reservoirs or rain;
• do not use fresh manure for fertilizing;
• as nitrogen fertilizers, humus with bird droppings is used, which is diluted with water 10-12 times;
• for quick help, the tree is sprayed with a solution of ferrous sulfate (50-70 g per 10 l of water), the procedure is repeated 3 times after 2 weeks;
• in the autumn period, 150 g of ferrous sulfate and 10 kg of humus or compost are introduced to a depth of 60 cm;
• to improve the oxygen regime in the zone of the root system, a solution of potassium permanganate is used (30-40 g per 10 liters of water), the consumption per tree is 10 liters.

To prevent chlorosis before the leaves bloom, the crown is recommended to be treated with a solution of ferrous sulfate (300 g per 10 l of water).

What to do if leaves fall

When the leaves from the cherries begin to fall off, experienced summer residents recommend pruning... To do this, remove dry, diseased and bare branches. Such measures prevent the death of the entire tree. After that, fallen leaves and weeds are collected under the cherry. Branches and debris are burned.

To protect the plant from falling foliage next year, before winter, it is recommended to add ammophoska. The tool is used to fill the grooves under the plant at the rate of 30 g per 1 sq. m. The base of the cherry is sprinkled with dry ash, which strengthens the plant's immunity.

After pruning, the soil under the tree is loosened and watered with warm water... Then the weakened plant is fed with complex fertilizers containing iron, nitrogen, potassium, phosphorus, zinc, calcium, copper, boron. To do this, use means for fruit trees: "Gumi-Omi", "Kemira", "Magic watering can".

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Preventive measures

To prevent yellowing of the leaves, recommend to carry out preventive measures:

1. Purchase varieties that are suitable for the respective region.
2. Plant trees in favorable places, away from apple and pear trees.
3. Inspect cherries regularly for signs of disease and pests.
4. Carry out timely pruning in dry weather using clean tools. Treat wounds with garden pitch.
5. Add water to the root, bypassing leaves, fruits and shoots.
6. Feed the plant in a timely manner.
7. Dig up the soil under the tree in the fall. Remove weeds and debris.
8. To produce lime whitewash in the autumn. To remove fungal spores, copper sulfate is added to the lime.
9. Cover the cherries for the winter.

Experienced gardening tips

To get a large harvest of cherries, experienced gardeners recommend process the plant with folk remedies. To prepare the solution, use dandelion leaves and stems, chamomile and nettle. They are poured with boiling water in a 1: 1 ratio. Insist 2 days, then spray the plant.

Treatment with fungicides and insecticides is recommended to be carried out before fruiting.so that the harvest is environmentally friendly. During fruiting, biological preparations are advised to be used in case of emergency.

To scare off pests, it is recommended to plant next to cherries cultures with a pungent odor (garlic, marigolds, smoking tobacco).

Conclusion

If the leaves on the cherry begin to turn yellow in July, it is recommended to immediately find out what caused the problem and eliminate it.Insufficient watering or excess moisture is often the cause. Leaves also change color due to nutrient deficiencies, insect pests and fungal diseases.

If you eliminate the cause in a timely manner, you will save the future harvest and the tree itself. Do not forget about preventive measures that will help prevent the problem.