Blackening and curling of pear leaves is a common problem faced by most gardeners. That is why you should not be afraid of it - experienced agronomists have long figured out how to deal with such a scourge. And today we offer you to understand this too - but first we will acquaint you more closely with the enemies of the fruit culture.
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Bacteriosis
Bacteriosis attacks plants suddenly, develops rapidly and spreads. Peduncles are the first to "give up" - they begin to wither and soon crumble. At the same time, the fruits that had time to set begin to rot - the pears darken and wrinkle, becoming covered with a brown bloom. The foliage curls and turns black, and the bark of the tree takes on a painful brown tint. Over time, if the disease is started, parts of the cortex begin to die off.
Hot weather and high humidity contribute to the development of bacteriosis. The disease can destroy all plantings in a short time, and therefore business must be taken into their own hands at the first signs of infection. Pears should be sprayed with antibacterial drugs. Most gardeners recommend the industrial fungicides Fitolavin, Tetracycline and Ampicillin. Before use, the listed compositions should be diluted with water - 10 liters per 3 tablets will be quite enough. The resulting liquid must be allowed to brew for a day - after that, it remains only to mix it with three tablespoons of sugar.
You can use industrial products for preventive purposes. It is best to spray fruit trees three times per season:
- before the formation of ovaries;
- during fruiting;
- a few days before the start of the harvest.
Scab
Fungal disease is annually included in the list of the most dangerous infections affecting fruit trees. It is not surprising - a scab damage leads not only to a modification of the leaves, but the death of inflorescences and rotting of pear fruits. The latter often acquire a whitish tint, and after that they become covered with brown, reddish or black spots. These neoplasms may look quite harmless, but do not be fooled - infected pears should not be eaten or used for storage.
Most of all, scab loves damp, cloudy weather - spores of a harmful fungus quickly spread in humid air and stick tightly to wet leaves. In the fight against scab, you can use the same methods as in the fight against bacteriosis.
Aspergillus
Infection with aspergillus leads to the formation of a solid black coating on the surface of the leaves, which interferes with the process of photosynthesis. Most often weak and undeveloped plants or trees with too dense foliage, through which air and sunlight do not penetrate, suffer from this disease.
Infected pears should be sprayed with a solution of lye (6 tablespoons per 10 liters of water). If the drug does not help, the trees should be uprooted and burned to avoid contamination of their neighbors.
If the aspergillus decided to visit the garden before the pear fruits began to fill up with juice, the infected trees can be treated with Phytolavin. This product should be used diluted in water (10 liters per 20 milliliters of the drug).
Insect pests
The reason for the blackening and curling of the foliage of the pear can be a visit from aphids or suckers. Aphids suck the juice out of the leaves, leaving a poisonous liquid inside the plates that causes inflammation. Copperhead, on the other hand, entangles the leaves with viscous liquid secretions, to which the spores of the fungus later adhere.
In the fight against insects, you can turn to the help of a soap solution prepared from dishwashing detergent diluted with water in a ratio of 1 to 5. An excellent substitute for industrial insecticides will be herbal infusion based on tansy, tobacco or yarrow. To prepare such a remedy, 400 grams of chopped grass should be poured with three liters of water and left to infuse for three days. After this time, the liquid must be mixed with 3 tablespoons of wood ash and diluted with 10 liters of water.
Do you know how to deal with blackening and curling of pear leaves?
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