The editors of China Pesticide Network have received a lot of netizens to inquire about the prevention and control methods of guayrin pests and diseases. Today, we will share the methods for your reference. Zhejiang Heshuo Technology Co., Ltd , https://www.hosuocn.com
1. The damage of red spider spider spider to cineraria began in March, when the temperature in the greenhouse was dry. The female adults after wintering begin to feed on eggs, which are usually harmful around the main veins of the leaves. The white leaf of the chlorosis is initially visible on the front of the victim leaf, gradually turns red, and the screen appears on the back of the leaf, and the damaged blade eventually falls off. The earliest prevention should be in the winter, to ensure that the environment around the cineraria is clean, to remove weeds in time, to check the potting soil, and to eliminate the overwintering insect source. In the occurrence of insect pests, if the guayule has not yet bloomed, it can be sprayed once every 7 days with 2000 times 40% dicofol emulsion or 40% omethoate 1000 times, and the effect is better; if the cineraria has been The flowering of the buds, in order to avoid the sensitivity of the flowers, try not to spray pesticides. It can be sprayed with foliar water spray or by using chewing gum to remove insects. It can also be sprayed with a suitable amount of neutral detergent powder by using some natural plants such as garlic, green onion, pepper and other smashed water bubbles for several days.
2, mites mites small body, rapid reproduction, multi-cluster in the leaves and tender stems of the cineraria to absorb juice. The damaged leaves turn yellow and curl and shrink to the back. Generally, the winter is warm, the spring is warm, and the rain is even. It started to hurt in March. Since the mites will overwinter on the cucurbits with eggs, after inspecting the plants in winter, the plants are sprayed in combination with Baume's 5 sulphur sulphur mixture to eliminate the overwintering eggs. Spray 40% omethoate 1200 times-2000 times or 40% acephate 1000 times solution during the aphid damage period. In order to avoid flowering phytotoxicity, plant chemicals such as 3% natural pyrethrin, 25% vine essence, 40% sulphuric acid sulphur can be used, and can be diluted to 1000-1500 times.
3. The poisonous moth moth is mainly caused by larvae, which is often called poisonous caterpillar. The early-age larvae are clustered and eat the mesophyll, leaving the epidermis, which looks like a skylight. The slightly larger poisonous caterpillars are scattered and bite the leaves into nicks and holes. The entire plant was damaged from the larger leaves at the bottom. The beginning of the pests was mostly in April, when the temperature in the greenhouse stabilized at around 20 °C. If drug control is adopted, it can be sprayed with 50% chlorpyrifos or 50% phoxim 1000 times. However, cineraria is usually in the flowering period, and only artificial killing is safer. It is worth noting that poisonous caterpillars are toxic to human skin and cause dermatitis. Therefore, it is necessary to wear gloves to catch them with scorpions to prevent them.
4, powdery mildew Melon is most susceptible to powdery mildew, which is a widely spread fungal disease. White adhesive on the front of the infected leaf, curled and deformed, and died. The easiest way to prevent it is to ensure adequate light and timely ventilation. If it has already occurred, 1000 times of 70% methyl thiophanate solution or 2000 times diluted 50% dexamethasone solution can be used in the initial stage. It can also be sprayed with 25% rusting WP 2,000 times to control the disease. . At the same time, the diseased leaves are cut off and destroyed, and the diseased plants are separated from the healthy ones to avoid mutual infection and aggravate the spread of the disease.
5, root rot and stem rot in winter, the water in the cineraria pottery soil is often difficult to dry, poor drainage combined with insufficient indoor lighting, excessive air humidity and other adverse factors, will cause root rot and stem rot . It is characterized by black and rot of roots and stems. The control method firstly pays attention to ventilation and dehumidification after watering, and increases the illumination. Next, the newly diagnosed cineraria, cut off the diseased department, put on the sulfur powder, and put it on the loose culture soil to replant.
In short, the prevention and control of diseases and insect pests of cineraria are mainly based on prevention. Only by knowing the time and law of occurrence of pests and diseases, before taking correct protective measures, we can reduce the damage of pests and diseases and effectively improve the ornamental effect of cineraria.