Disease control of Simmonia officinalis

First of all, the most common coal pollution disease of Ximoya is caused by aphids and scale insects, so we can find the root cause and then we can first carry out insecticide, and then prune the plants. Secondly, for the treatment of leaf spot disease and brown spot disease, we can spray carbendazim and chlorothalonil at the early stage of the disease, so that we can effectively control these two diseases.

Today, the disease of Xi Mo Li and their prevention and control methods are introduced here. Xi Mo Li mainly suffers from coal pollution, leaf spot and brown spot. The most important coal pollution is due to aphids and scale insects. Then we do regular insecticide treatment and timely spray carbendazim and chlorothalonil, which can prevent and control the disease of Xi Mo Li.

Control of common diseases of Ximoya

Coal pollution disease: mainly infected leaves, the initial stage of the disease was spotted soot, gradually expanded into pieces, heavy ones can cover the entire leaf, often thin, will crack, peeling. The disease is caused by a variety of coal pollution bacteria infection, which mainly parasitize aphids, scale insects and other excreta and secretions. This disease is most likely to occur under conditions of high temperature, high humidity and poor ventilation.

Control methods: kill aphids and scale insects in time; prune them in time, strengthen ventilation and light transmission; spray 0.3% Baume sulfur mixture once every 15 days, or spray 800 times solution of 50% carbendazim wettable powder and 800 times solution of 70% thiophanate-methyl wettable granules once every 7~10 days for 2~3 times continuously to effectively control them.

Leaf spot disease: The disease spot is yellow brown at the beginning, surrounded by yellow-green halo, and then expands into a nearly round or irregular disease spot with dark brown edges. In the later stage, black dots appear on the disease spot.

Control method: 50% carbendazim wettable powder 500~600 times solution can be used for prevention and control in the early stage of disease, spraying once every 7~10 days, according to practical experience, spraying once again on the third ~ fourth day, spraying once every 7 days, 3~4 times in succession, the control effect is good.

Brown spot disease: mainly harm leaves, leaf buds and flower buds. Pathogens mostly invaded from the edge of leaves and bracts, the initial spots were yellow brown, gradually turned dark in the process of expansion, and finally irregular brown spots, bracts of flower buds were lighter in color. Dark brown ridge lines were found on the inner edge of the lesion, and the boundary between the lesion and the healthy part was obvious. At the later stage, many clear gray spots were scattered on the surface of the disease spots. Severely damaged leaves and buds fall off.

Control methods: At the initial stage of the disease, chlorothalonil 600~800 times can be sprayed every 7~10 days, continuously sprayed 2~3 times.

Control methods of diseases and insect pests of African jasmine

African jasmine evergreen vine, stems up to 4 m long. African jasmine is easy to adapt to unfamiliar environments and can be grown in courtyards and balconies. African jasmine branches color if jade, leaves shiny oil, flowers slightly fragrant, elegant flower shape, each five-petal, umbrella-shaped, clustered at the top of the flower. African jasmine generally does not have frequent pests, but occasionally it does. So, what are the common pests and diseases of African jasmine? What is the African jasmine pest control method?

Control methods of diseases and insect pests of African jasmine

1. Control methods of African jasmine disease

1. Anthracnose: mostly occurs on shoots and leaves, with nearly circular to irregular concave spots, brown edges, grayish white to grayish brown centers, sparse black dots on them, and its conidia. Control method: In the early stage of disease, spray 50% carbendazim WP 800 times solution plus 25% chlorothalonil WP 800 times solution, or 25% tanteling WP 500 times solution, alternately spray once every 10 days for 3 to 4 times continuously.

2. Sunburn: summer heat in the shade is not in place under the circumstances, potted African jasmine tender shoots and young leaves prone to sunburn, manifested as more gray or light white burn spots on the leaves. Prevention and control methods: shade with sunshade net and change position properly; increase watering frequency and watering amount in high temperature and drought season, sprinkle water on leaf surface if necessary; move burned plants under shade shed in time, cut off burned tender shoots and young leaves, strengthen water and fertilizer management, and make plants recover health as soon as possible.

II. Pest control methods for jasmine in Africa

African jasmine occasionally occurs leaf-eating pests, such as short-fronted negative locust, resulting in more holes or notches on the leaves of the plant, should be sprayed with 90% trichlorfon crystal 800 times solution in time to kill.

The above is an article on the prevention and control methods of African jasmine diseases and insect pests. African jasmine likes warmth and good sunshine, but it requires avoiding direct sunlight in summer; it likes high air humidity and good ventilation environment. African jasmine pests are generally easier to control, do not worry too much, as long as the scientific method to cultivate African jasmine, it can grow healthily.