Hibiscus insect control, hibiscus pest and disease and control

The main insect pests of Fuso are aphids, chaff, fumian and mites (commonly known as red spiders). These pests are all stinging and sucking pests. That is, they use their mouthparts to pierce the leaves or epidermis of the plant and suck the sap of the plant.

The leaves of the damaged plants lost their green and their growth weakened, which reduced their ornamental value. After the occurrence of aphids and mites, it can be diluted by aphid mite killing, aphid mite net, mite removal and other drugs for a certain number of times, and then foliar spray killing, once a week, generally 2-3 times can be basically extinct. Bran and blown cotton can harm the leaves and epidermis, generally can be used imidacloprid drugs or their modifiers, diluted a certain multiple, in the affected part of the spray killing.

If the damage is serious, it can be done once every 10 days, and it can be basically extinct after 3 times.

Hello pro-Fuso leaf spot disease is a fungal disease. It mostly occurs in late autumn when the weather turns colder, especially in the northern regions. The first symptoms are pale yellow and reddish-yellow spots on the leaves, which are round or oval after enlargement, and may appear black granular material on the lesions under more slippery and moist conditions, and the leaves dry up and fall off in the later stage.

Prevention and control methods: The key to the prevention and control of the disease is to do a good job of cold protection, and take protective measures when the wind cools down after autumn. Fuso stem rot Fuso stem rot is a serious fungal disease that occurs widely.

The disease mostly occurs in the rainy season, and the disease is severe under high temperature and rainy conditions. At first, the symptoms are not very obvious, but the cortex of the affected area will shrink, and Xinqing will appear dark brown, but the subcutaneous tissue has begun to decay and become brown, and the plant will dry up and die after the lesions around the stem for a week. The leaves will also have corresponding symptoms, in the early stage of the disease, the leaves will wilt, the edges appear yellow-brown blight, gradually expand inward, and the leaves will dry up and fall off in the later stage.

Prevention and control methods: The key to the prevention and control of the disease is to prevent heavy rains from washing the plants for a long time, and to dry them with 200-500 times of tobuzin every 10 days before and after the rainy season. Fuso anthracnose occurs on leaf patches.

Lesions are nearly round or irregularly round, often occurring.

Soak the cigarette in water and spray it with water.

.Pest controlThe main pests and diseases of Fusang are aphids, scale insects and other hazards. Control method: After the occurrence of insect pests, spray 1500-2000 times of dimethoate

** Below:

1. Kill them with lime or spray mosquito repellent.

2. Take 2 grams of laundry detergent, add 500 grams of water and stir into a solution, add a drop of clear oil, and spray the insects on the plants.

3. 50 grams of Sichuan pepper, add about 500 grams of water, heat and boil in a pot, boil into 250 grams of liquid medicine and spray.

4. After the mosquito coil is lit, hang it on the insect-containing plants, cover the plants and flower pots with plastic bags, and the pests will be eliminated after 1 hour.