Why do raspberry leaves turn yellow
In almost every garden you can find raspberry bushes. After all, its fruits are very useful, and growing does not cause much trouble. But, like other plants, raspberries are sometimes exposed to diseases and pest attacks. We will tell you how to deal with them and protect raspberry bushes.
Causes of yellowing raspberry leaves
If the foliage turned yellow in the fall - this is normal. But in the spring or summer - a serious problem, which will entail a decrease in productivity and can lead to the death of one bush, and in some cases the entire planting. So why does the foliage turn yellow?
Important! Repairing raspberry varieties are less likely to be affected by diseases and parasite injuries.
The most dangerous raspberry viral disease is curly. The disease begins to appear on the branches, gradually spreading to the leaves, which become irregular in shape, twisted on the sides. Veins on the leaves are glassy, foliage crumbles upon touch.
Mosaic - the leaves are small, wrinkled and stiff. The bottom of the sheet plate is brown.
Infectious Chlorosis - the disease is transmitted by aphids. It activates with the beginning of summer. First, yellowness appears between the veins, which quickly spreads throughout the leaf part.Leaves twist and become wrinkled.
Witch sprouting or broom - a lot of underdeveloped shoots are formed on the diseased plant. The leaves are chlorotic.
In place of the bush removed due to the virus, raspberries cannot be planted for 5 years.
Rust - at the end of spring, dark spots appear on the lower part of the leaf, they dry and crumble.
Spotting - the stems are the first to be affected, light, purple spots appear on them, which eventually pass to the leaf part. The edges of the spots become dark red in the center with a black dot.
Powdery mildew - develops in early summer, with high humidity. The whole bush is covered with a white, powdery coating, due to which the leaves dry and become brittle.
Anthracnose - a common disease. Leaves and stems are covered with small gray spots with purple edges. They grow rapidly, connect with each other, forming ulcers. Leaves twist and die.
The simplest problem. If you do not trim the bushes, the plants do not get enough light. In this case, photosynthesis is disturbed and the leaves begin to dry and turn yellow.
Did you know? Useful substances are found not only in berries, but also in leaves, and even in shoots of raspberry bush.
Lack of moisture in the soil
During a drought, soil moisture should be monitored. Inadequate and untimely watering can cause yellowing of the leaf plates. Without water, nutrients do not enter the plant well.
Shortage of batteries
With a lack of nutrients, foliage can also turn yellow and dry.. Potassium deficiency is manifested by a burn of the lower leaves, with a dry rim. Foliage becomes wrinkled.
With a lack of magnesium, spots form on old leaves - first they brighten, then they turn brown. Foliage wrinkles and crumbles. Only the tip remains.If there is not enough nitrogen - leaves are yellow-orange or red, fall along the entire length of the branch.
Increased soil acidity
With very high levels of acid in the soil, useful substances do not reach the plant. The root system is poorly developed, as a result of which foliage and shoots turn yellow and become brittle.
To check the soil for acidity, you need to take a handful of land for planting, slightly sprinkle it with table vinegar. Bubbles on the surface - a signal of normal acidity. The reaction did not occur - acidity increased.
Methods of dealing with ailments
It is worth noting that plants damaged by the virus must be immediately uprooted and burned outside the garden or orchard. Other methods of control are not effective.
The most common remedy is Bordeaux fluid. She processes plants before the start of the growing season, after flowering and fruiting. To combat fungal diseases, treatment with fungicides containing copper is recommended.
Experienced gardeners advise a one-time treatment of bushes with boiling water. You just need to pour hot water on the plant from the watering can.
This will destroy all pests, viruses and diseases. Processing should be carried out at the end of winter. To combat fungal diseases, tinctures from garlic, tobacco, and onion husks are recommended.
Instead of boiling water, you can spray with birch tar.
For prevention, it is necessary:
- Trim bushes carefully.
- Destroy damaged shoots and foliage.
- Mulching the soil.
- Treat against insects and parasites.
- Avoid thickening of the landing.
- Harvest weeds and loosen the soil.
- For landing use only healthy individuals.
Did you know? Torn grass can be thrown under raspberry bushes. This will provide additional mulching..
As you can see, prevention is the key to a plentiful crop and plant health. Take some time for the raspberry and he will thank you with a wonderful harvest.