What diseases do ivy have Common diseases and prevention of ivy

Large-leaved ivy brown spot control.

One is reasonable fertilization and watering, pay attention to ventilation and light, usually too much watering too often, or water accumulation after rain or poor drainage of the hole at the bottom of the pot, as well as poor soil quality and long-term potting and soil change, etc., will also cause fungal flower diseases, and often start to blacken from the roots, because the leaf and root conduction tissue is connected, the root is faulty, it will inevitably be reflected on the branches and leaves, so it should also be paid attention to from the soil quality, moisture and drainage performance; In addition, the application of uncooked organic fertilizer is also easy to cause diseases, and when using domestic organic waste for fertilizer, you can add Gymboree biological starter (Gymboree organic material decaying agent), which can accelerate the decomposition while also eliminating the germs.

the second is to remove dead branches and fallen leaves in early spring or late autumn and cut off diseased branches and leaves in time;

Third, it can be sprayed with 65 times of 600 times of zinc for prevention;

Fourth, spray 50 carbendazim or 50 tobuzin 500 times 600 times liquid, or 75 chlorothalonil 600 times 800 times liquid at the beginning of the disease.

Ivy often occurs aphids in spring, and red spiders and scale insects are also prone to occur under high temperature, dry, and poor ventilation conditions, so they should be sprayed as soon as possible. The sultry climate in summer is also prone to insect pests, mainly scale insects, especially the back of the leaves and petioles, which can reduce the occurrence of insect pests. If there are few pests, you can use an old toothbrush soaked in soapy water to clean it.

In the case of many pests, it can be sprayed with 40% dimethoate 800 times liquid, sprayed once every seven days, and sprayed 2 to 3 times in a row, with remarkable results.

Mine too, like a scale worm, the black spot on the back of the leaf is.

It feels like a lack of fertilizer, the old branches do not grow vigorously, the leaves are too dense, diseased leaves, small leaves, and some of the ones that can't see the light are removed. Do you dare to prune, it is said that it is beneficial to extract new branches, I have tried it is not obvious.

It seems that there is a large area of infectious disease, which should be plants"Fever", my family has also been born, and I have to use ice water to douse it! You're going to choose me!

Symptom characteristics At the onset of the disease, the whole leaf or most of the leaves turn brown and rot, or the base of the stem and vine and the base of the young nodes are dark green and watery. The plants gradually become soft and shrivel, and the branches and leaves above the diseased part wither. Blight diseases are often caused by the presence of germs in the soil, or the humidity of the air and the hot environment, which can spread rapidly once the disease occurs.

Prevention and control methods Diseased plants are found to be uprooted in time, and watering is properly controlled.

Choose disease-free plants when planting, and disinfect the soil before use. Usually strengthen maintenance, pay attention to ventilation and light, and keep out the rain in time when it rains, so as to avoid wet potting soil and moisture retention.

Timely spraying of pesticides for prevention and control: At the beginning of the disease, spray or water 25 methamanine wettable powder 800 times liquid or 58 methamethalManganese-zinc wettable powder 600 times liquid, there are many options, just go to the market and buy it.

Symptom characteristics At the onset of the disease, water-stained brown or black lesions are produced on the edge of the leaves, and in severe cases, the lesions can occupy most or the whole leaf of the leaves, and when wet, a gray mold layer is produced.

Control methods Use disease-free new soil for cultivation, control watering, and do not apply too much nitrogen fertilizer.

Remove the diseased leaves in time and burn them. At onset, spray chlorothalonil 75 500 times. 1 time for 10 days, 2 3 times in a row.

Symptom characteristics At the beginning, only small round dark spots appear on the leaf surface, with oily halos. Later, it enlarges and is black, some become polygonal, and occasionally canker spots are produced on the petioles. Leaf spot disease is severe, highly contagious, and is very easy and difficult.

Prevention and control methods Choose disease-free mother plants to breed, and everyone must look for the store when buying, don't buy back a pot of diseased plants, no matter how to remedy it, it can't survive.

At the beginning of the disease, spray streptomycin sulfate 3000 times or 12 green milk copper emulsifiable concentrate 600 times, 20 dragon bacteria suspension 500 times.

Symptom characteristics Many flower friends have seen scale insects, and from a distance, there will be many small white spots on the plant, which will affect the appearance, but in the later stage, scale insects will make a fortune on the leaves, causing the leaves to turn yellow, the plant to wilt, and in severe cases, it will lead to the death of the whole plant. Scale insects leave wounds on the leaves, and they are also easily infected by bacteria, inviting diseases.

Control methods In the early stage, there are fewer insect pests and can be scraped manually. If a large area of disease is found in the later stage, 40% dimethoate emulsifiable vitex 800 times can be sprayed.

Too strong light: In summer, the sun is too strong, the shade protection is not timely, and the branches and leaves are burned, resulting in the gradual death of ivy; Excessive rainfall: In the event of continuous rainfall, the long-term siltation of water in the potting soil causes ivy roots to rot and die; Lack of nutrients:

The nutrients in the growth period are insufficient, and the lack of nutrients in the plant causes the branches and leaves to turn yellow and dry; Pest and disease infestation: In high temperature and high humidity weather, it is easy to suffer from pests and diseases, so you can spray an appropriate amount of chili pepper water on the branches and leaves to prevent it.

In summer, the sun is too strong at noon, and the shade is not timely, causing the ivy to gradually turn yellow and die. Ivy likes light, and sufficient sunlight can make the vines grow better, but if the temperature is too high and the strong light hits the branches and leaves, it will cause the branches and leaves to be burned, so when the sun is too strong at noon in summer, it is recommended to move the ivy to a ventilated and scattered place indoors for maintenance.

Summer is the rainy season, too much rain, long-term siltation of potting soil will cause ivy root rot, especially in the hot and rainy season, the plant will intensify the death. Therefore, in the process of maintenance, we should always pay attention to observe the weather changes, in case of continuous rainfall, it is recommended to maintain the ivy indoors, and loosen the soil in time to drain the stagnant water.

Ivy needs nutrients for normal growth**, and if the fertilizer is not sufficient, the plant lacks nutrients, which will cause the branches and leaves to turn yellow and dry up. Spring and autumn are the peak seasons for ivy growth, and a large amount of liquid fertilizer water needs to be provided, and liquid fertilizer is generally applied once every 2 to 3 weeks. In addition, some bone meal can be mixed with the soil before planting to improve soil nutrients.

The weather with high temperature and humidity is the time when insects are most active, and this is the time when green plants such as ivy are most vulnerable to pests and diseases, and if they are not detected in time, they will cause vines to wither and die. In case of this phenomenon, the plants can be placed in a diffuse and ventilated place to allow air circulation around the plants to reduce the damage of pests and diseases, and an appropriate amount of pepper water can also be sprayed on the branches and leaves to effectively prevent insect infestation.

1. Too strong light: The leaves of ivy will be damaged in a strong light environment, and then gradually die. 2. Improper watering:

Dry and wet soil can easily damage ivy roots, causing the plant to die gradually. 3. Temperature discomfort: The high temperature and sultry environment will hinder the respiration of ivy.

4. Insufficient fertilization: the water nutrients transported by the root system cannot meet the growth needs.

1. The light is too strong

Ivy gradually withers is caused by too much light, ivy likes a warm and humid environment, is not tolerant to strong light exposure, long-term put the plant in an environment with too much light, it is easy to cause damage to the leaves of ivy, affect the progress of photosynthesis, and then gradually die.

2. Improper watering:

When breeding ivy, it is necessary to ensure that the soil is moist, but not too much watering, too much or too little, the soil is in a wet and dry environment, which is easy to damage the root system of the plant, affect the metabolism of ivy, and lead to the untimely transportation of water and nutrients and make the plant gradually wither and die.

3. The temperature is uncomfortable

Ivy likes a cool environment, not heat-tolerant or cold-tolerant, low temperature in winter plants will appear frost damage, summer temperature is too high, and the environment is hot and not ventilated, the root system is in a hot and humid environment, breathing will be hindered, affecting the normal growth of ivy.

4. Insufficient fertilization

When cultivating ivy, it is necessary to use moist, loose and fertile soil, and in the growth period to carry out topdressing in time, if the fertilization is insufficient, it is easy to lead to poor plant growth, at this time, the root system is weak and the water and nutrient transport is slow, and the ivy can not meet the demand for water and nutrients, and then gradually wither.

Ivy in the process of maintenance, if the plant is dry and generally can live, you can cut off the dry leaves and top buds, bury the stem below in the soil, and then take cuttings after the growth of leaf seedlings, and then keep the potting soil moist during the growth period, and control the temperature at about 18 20 It is easy to survive.

Ivy is an evergreen foliage plant in all seasons, so ivy will live when it dries up, in fact, it can live, as long as the fertilizer and water are appropriate, give sufficient light treatment every day, or cut off the dry leaves and top buds, bury the stem below in the soil, and then take cuttings after the leaf seedlings grow, it will be easy to survive.

1. Reasonable watering

Ivy has high requirements for water growth, it likes to grow in humid soil, if the plant is dry means that there is too little watering, so during the growth period to keep the potting soil moist, if it is hot or the air is dry, you can properly spray water mist around the plant, and reduce watering in winter.

2. Change the pot

If the ivy is dry, the first thing that comes to mind is caused by root rot, it is best to replace the potting soil in time at this time, re-prepare the loose and fertile organic soil, you can choose to use humus and garden soil, coarse sand mixed soil, and then add an appropriate amount of organic fertilizer at the bottom of the pot as the base fertilizer, and water it thoroughly and stir.

3. Environmental control

If the temperature is high or the light is too strong, it will directly lead to the drying of ivy, it is best to control the temperature at about 18 20, to ensure that there are about 4 hours of sufficient light every day, the summer high temperature and strong light season can be placed in the indoor shade, and the winter temperature is too low to carry out artificial light treatment.