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In general, the color of the top leaves of potted flowers is normal, but the lower leaves gradually dry up and fall off. This is usually due to the fact that the potting soil cannot be watered for a long time, causing the lower leaves to age and turn yellow. Watering should be increased appropriately to keep the soil moist.
If the potting soil is too wet, the young leaves are pale yellow from the top of the flowers, and the old leaves are gradually yellow, and the new shoots are shriveled. Compared with your flowers, it seems that the pot soil is too dry and yellow, it is recommended to water it thoroughly, not only use a sponge to soak in the water, so that the surface is wet, the soil is not wet inside, the old flower farmer originally grew moss outside the pot, and the water was caused by the penetration of the inside and outside, that is, after the water was sufficient. The above is for reference only.
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The leaves of potted avocados may turn yellow for the following reasons:
1.Ponding in potting soil: Ponding in potting soil may lead to hypoxia in the soil, which will cause some roots to rot and weaken their ability to absorb water and fertilizer.
2.Excessive fertilization or excessive concentration.
3.Insufficient fertilizer and water or large pots, and the root system in the pots is senescent or too dense.
4.Insufficient indoor light: If the avocado is left indoors for a long time, it may cause insufficient light and affect its growth.
5.Pest and disease infestation: such as banyan leaf spot, which will cause black spots on the leaves, mostly from June to September, can cut off the diseased leaves, and spray them with 5 Beleba wettable powder in time.
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Hello, glad to answer for you, "It seems to be avocado's cercospora spot." The disease affects leaves, stems and fruits. Infect the fruit, forming blight on its surface or causing cracking of the epidermis, which can cause infection with Anthroplastus charcoal.
When infecting leaves, the first scattered 2 5 mm blight appears on the leaf surface, first brown, then purple, the spots spread to both sides of the leaves, irregular shape, in severe cases, the blight combines to form a larger blight. Chemical control can be used, spraying copper preparations and azoxymetic resin on branches and fruits, I wish you a happy life.
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Summary. 1. Anthrax This is an important disease of avocados, which has a strong ability to harm fruits, and can also infect leaves, flowers and twigs. 2. The diseased fruit will first grow lesions, the diameter is generally not more than 5 mm, and the shape is round.
After that, the lesions will gradually enlarge and become inwardly sunken. 3. The fruit will invade the pulp after ripening.
1. Anthrax This is an important disease of avocados, which has a strong ability to harm fruits, and can also infect leaves, flowers and twigs. 2. The diseased fruit will grow lesions first, with a diameter of no more than 5 mm, and the shape is round and nucleated. After that, the lesion will gradually enlarge and the nucleus will be hollowed inward.
3. The fruit will invade the pulp after ripening.
Can you help take a look at the avocado leaves when they are sick.
You can find a planting station, buy some medicine, and get a fight.
I don't know what the problem is.
I can't send it**, it's useless for me to ask you questions.
You can also find someone you know, who knows better, ask or go to the seed station, tell someone about the symptoms of the fruit tree, and someone else will give you medicine.
Then I'll give you money and ask you a yarn question.
I've got anthrax.
Leaf curl virus? The head was the first to develop, and the growth almost stopped, and the medicine had to be used three times.
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