Causes, prevention and treatment of leaf spot disease of rich trees

Rich tree is a common indoor potted plant, easy to raise rich tree occasionally lose his temper, such as leaf spot disease is a common disease of rich tree, many flower friends do not know what causes rich tree leaf spot disease, more do not know how to prevent rich tree leaf spot disease, for how to treat rich tree leaf spot disease is more at a loss, today Xiaobian will answer for you.

The cause of leaf spot disease of fortune tree

Symptoms of leaf spot disease: brown small spots appear on the leaf edge or leaf tip at the early stage of the disease, irregular spots appear after expansion, dark brown, and finally gray irregular spots, gray or grayish brown spots at the later stage of the disease, dark brown lines at the edge of the spots, and yellow lesions or no yellow lesions at the periphery of the spots. Large lesions are papery. Under humid conditions, the disease develops a small number of small black particles.

The leaf spot disease of Fortune Tree is a fungal disease caused by a leaf spot mold, and of course it may be caused by improper water and fertilizer.

Control methods of leaf spot disease of fortune tree

1. The planting density is suitable for ventilation and light transmission.

2. Drain water in time after rain, ventilate and transmit light in greenhouse, so as to cool down and dehumidify.

3, rich tree roots are not developed, should be watered and fertilized in time, so that its robust growth to improve disease resistance.

4, ventilation during transportation, get on and off the car and other gardening operations to avoid wounds.

5, winter greenhouse room temperature should be kept above 16℃.

Treatment of leaf spot disease of fortune tree

At the initial stage of the disease, spray 65% Aikejun WP or 50% Thiophanate-methyl sulfur suspension 800 times solution, 30% basic copper sulfate suspension 400 times solution, 75% Dakening WP 700 times solution, etc. once every 7~10 days.

The leaves of the rich tree have brown spots. Pay attention to distinguishing between leaf blight and leaf spot disease.

Brown spots appear on the leaves of Fortune Tree, which will not only affect the appearance of Fortune Tree, but also most likely affect the growth of Fortune Tree. However, brown spots alone may not be able to accurately determine what disease the rich tree suffers from. This paper introduces two diseases and their control methods on the basis of brown spots on the leaves of Fachuishu.

Leaf blight and leaf spot are common diseases of fortune tree.

I. Disease blight

disease symptoms

Black brown is produced in the early stage, gray or dark brown spots like sunburn symptoms are produced inside, and black powder can be seen on long spots.

control methods

1. Discovered diseased leaves shall be removed in time and destroyed.

2. Strengthen maintenance management, timely watering and fertilization, and topdressing 2 to 3 times of foliar fertilizer per growing season, such as 0.5% potassium dihydrogen phosphate or 200 times of double-effect micro-fertilizer solution.

3. Prevention. In the southern region, when planting the tree, prevention should be carried out in time from the rainy season, spraying 800 times solution of 50% carbendazim or 800 times solution of 70% chlorothalonil or 1500 times solution of 75% thiophanate-methyl every 10~15 days.

4. At the early stage of disease, spray 75% chlorothalonil WP 800 times solution, or 50% tuijunte WP 600 times solution, or 50% carbendazim WP 800 times solution, or 75% thiophanate-methyl WP 1500 times solution for control.

II. Leaf spot disease

disease symptoms

The disease causes leaf scorch and is an important leaf disease. The disease affects growth and sight. At the early stage of disease, brown spots appeared on the leaf edge or leaf tip, which were irregular and dark brown after spreading; at the late stage of disease, the spots were gray or grayish brown, with dark brown lines on the edge of the spots, and there were or were no yellow lesions on the periphery of the spots. Large lesions are papery. Under humid conditions, the disease develops a small number of small black particles.

treatment

At the early stage of disease, spray new lipid membrane +65% Aikejun WP or 50% Thiophanate-methyl, 800 times solution of sulfur suspension, 400 times solution of 30% basic copper sulfate suspension, 700 times solution of 75% Dakening WP, etc. 7 to 10 days.

Whether it is leaf blight or leaf spot disease, brown spots appear on the leaves. Therefore, the rich tree leaves have brown spots, prevention and control before the need to distinguish between different diseases, in order to prescribe the right medicine, medicine to the disease in addition.

How to deal with the rotten roots of rich trees and save the roots of rich trees

Rich tree is a common home potted plant, office potted plant, but in the rich tree in the maintenance of improper, there will be rotten roots phenomenon, of course, rich tree rotten roots phenomenon do not worry, found rich tree rotten roots phenomenon must first analyze what causes, find the reason can save. The following is a summary of the root causes and rescue methods.

Rich tree rotten roots show bark shedding

Rich tree rotten roots will also show up in the bark. Careful flower friends may find that sticky secretions appear near the roots of the rich tree trunk at home, and moldy white hairs will appear, soft to touch with hands, and the nearby bark will fall off.

The reason for the rotten roots of the rich tree 1. The accumulated water in the basin leads to the rotten roots of the rich tree

Rich rotten tree roots are generally caused by water in the basin. Too much water in the basin, the roots are in a wet environment for a long time, breathing is blocked, and the roots will become soft and rotten. There are two main reasons for ponding in the basin. One is too much watering; the other is poor ventilation, too humid and stuffy.

2. Serious diseases and insect pests lead to rotten roots of rich trees

When the rich tree is infested by pests, it will also lead to the appearance of rotten roots. Due to poor water quality, basin soil is wet, easy to breed pests, gnawing roots, causing decay. Common diseases and insect pests that occur on fortune trees include powdery mildew, root rot, and root rot nematodes that parasitize the soil.

How to deal with the rotten roots of rich trees 1. Root treatment

When the leaves turn yellow and the bark softens, prune the roots in time. Cut off the yellowed leaves, leaving only the bud eyes. Remove the woody stems, leaving the roots alone, and clean the soil at the bottom. Cut the roots with scissors and cut off the rotten parts. If the rot is serious, cut off all the messy roots directly. If the stem also begins to rot, the rotting parts need to be removed and reduced to pieces.

Soak the treated rhizomes in thiophanate-methyl or potassium permanganate solution for 24 hours; or spray the wound with proclamine. Then dry in a cool, ventilated place and replant.

2. Drug treatment

When root rot and other pythium are active, spray with Prik, Tujunling, Redomil or Yishuang Ling. The general efficacy is about two weeks. In addition, non-fumigant nematicides such as kexianphos, kexiandan, miler and phorate can be used to treat pests of fortune tree.

How to prevent the root rot of the rich tree 1. Selection of soil matrix

If you want to cultivate healthy fortune trees, you need to provide them with good soil matrix, and you must have good air permeability. Cultivation substrate with good air permeability and water permeability can be prepared, and medical pond mud, river sand and cooked sawdust can be mixed in a ratio of 5:3:2; or mountain mud and river sand can be mixed in a ratio of 7:3. Special horticultural nutrient soil and anti-rot root particles can also be purchased from flower markets.

2. Look at the soil and water properly

Watering is an important part of conservation management, and the amount of water must be strictly controlled when conserving rich trees. When the soil is found to be white, it is poured thoroughly. Fortune tree does not need watering every day, at normal temperature can be watered once every five or six days, rather dry not wet. And at ordinary times should pay attention to the hygiene of flowerpots, if the basin hole is blocked, it should be dredged in time.