Horseshoe golden lawn pest control

Horseshoe gold has a strong negative resistance, its leaf shape is unique, its overall coverage density is large, and it can grow normally under light. Use it to build a lawn, and the greening effect is good. However, horseshoe gold is very vulnerable to pests during the growth process, especially during the rainy season. First, common diseases 1. The main symptoms of rust are red-brown powdery patches or streaks on the stems and leaves, which turn dark brown. In general, the rust spores began to spread in April, appearing on the leaves first and expanding to the whole plant in summer. In severe cases, the turf can wither and the large dead. The prevention and control method is first of all to pay attention to the application of nitrogen fertilizer in summer, followed by chemical methods. Triadimefon available 20% emulsifiable concentrate, 30 to 40 ml per acre, or 40% carbendazim suspension concentrate, from 75 to 100 ml per acre. 2. The main symptoms of sclerotinia-infected plants are the appearance of round tan or micro-tan spots, which turn into large lesions as the disease progresses, especially in summer with high temperature and high humidity, or improper nitrogen fertilizer application, which will aggravate the disease and cause large areas of alopecia areata. The prevention and control method was firstly performed at the time of onset, and the plants in the diseased area were dug out and concentrated in 5 cm soil layers, and disinfected and sterilized with 40% pentachloronitrobenzene powder at a mixing soil of 2 grams per square meter. Secondly, attention should be paid to the rainy season drainage. When severe disease occurs, 75% chlorothalonil WP can be used to prevent and treat 100-125 grams per mu. Second, pests 1. Grasshopper This worm has severe damage to the lawn. It feeds on the grass roots and stems, interrupts the supply of water to the plants, and leaves the stems and leaves yellow until they die. Control methods can be killed with black light, but also can be trapped with sweet and sour liquid, but also can be used 40% of the 1000 times spray liquid. 2. The cuspidate leaves and tender stems are punished by the tip, and the stems and leaves are completely eaten in severe cases. The most serious damage is from June to August. Control methods Spray 0.5 kg of trichlorfon or 500 kg of water with dichlorvos per acre, and concentrate human energy in the morning. 3. Small tigers eat only young stems and leaves, so that the lawn can not grow normally, in serious cases can cause plants to die. Control methods use 50% sub-agricultural EC, 50 to 100 ml/mu, or 25% carbaryl wettable powder, 200 to 250 g/mu.

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