Common diseases and prevention of ivy

Ivy Diseases - Blight

Symptoms

When the disease occurs, all or most of the leaves turn brown and rot, or the base of the stems and tender nodes become dark green and water-soaked. The plant gradually becomes soft and shrunken, and the branches and leaves above the diseased part wither. Epidemics are often caused by pathogens in the soil, or by high humidity in the air and a hot and stuffy environment. Once an epidemic occurs, it will spread rapidly.

Prevention and treatment methods

Remove diseased plants promptly if found and control watering appropriately.

When planting, choose disease-free plants and disinfect the soil before use. Usually, you should strengthen maintenance, pay attention to ventilation and light transmission, and block rain in time when it rains to avoid the soil in the pot from becoming moist and moisture being retained.

Spray pesticides in time for prevention and control: In the early stage of the disease, spray or water 800 times diluted 25 % metalaxyl wettable powder or 600 times diluted 58 % metalaxyl . mancozeb wettable powder. There are many options, just buy them in the market.

Ivy Diseases - Botrytis Cinerea

Symptoms

When the disease occurs, water-soaked brown or black spots appear on the edges of the leaves. In severe cases, the spots may occupy most or all of the leaves, and a gray mold layer will form when it is humid.

Prevention and treatment methods

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

Remove diseased leaves promptly and burn them. When the disease occurs, spray 500 times diluted 75 % thiophanate-methyl. Once every 10 days, 2 to 3 times in a row.

Ivy Diseases - Leaf Spot

Symptoms

In the early stage, only small circular dark spots with oily halos appear on the leaf surface. Later they expand and become black, some become polygonal, and occasionally ulcer spots appear on the petioles. Leaf spot disease is serious, highly contagious, prone to recurrence and difficult to cure.

Prevention and treatment methods

Choose disease-free mother plants for breeding. Also, be sure to identify the store when purchasing. Don't buy a diseased plant, which will not survive no matter how you remedy the situation.

In the early stage of the disease, spray 3000 times diluted streptomycin sulfate or 600 times diluted 12 % green copper emulsifiable concentrate, or 500 times diluted 20 % Longke bacteria suspension.

Ivy Pests - Scale Insects

Symptoms

Many flower lovers have seen scale insects. From a distance, there will be many small white spots on the plants, which affects the appearance. But in the later stage, the scale insects will wreak havoc on the leaves, causing the leaves to turn yellow and the plants to wilt. In severe cases, the entire plant will die. Scale insects leave wounds on leaves, which are easily infected by bacteria and cause diseases.

Prevention and treatment methods

In the early stage, there are fewer pests and they can be scraped off manually. If large-scale diseases are found in the later stage, spray 800 times the diluted 40% oxydemeton-methyl emulsifiable concentrate.