Maize dwarf mosaic disease is one of the virus diseases that endanger maize production. It can be infected during the whole growth period. This disease occurs in corn planting areas, and it tends to increase year by year. In the early stage of the disease, many oval-shaped greenish dots emerged from the veins at the base of the heart, and they were arranged into one or more intermittent dotted lines, which later became solid lines. The disease department continued to expand, and many yellow stripes were formed between the rough veins, which were not limited by rough veins, and were irregularly expanded to form mosaic symptoms with the healthy ones. The disease department continues to expand, forming many large and small round green patches that turn yellow, brown, purple, or dry. Severe diseased yellow leaves and leaf sheaths sometimes appear green spots, plants are short, can not ear, late earing or not strong. The degree of occurrence of the disease is closely related to many factors such as host plants, poison sources, aphids, cultivation environment, and climatic conditions. Especially with the increase in the number of locusts and their migration, the disease spreads and spreads in the fields, resulting in multiple infestations and easily causing widespread damage to corn.
When the larvae migrated into the locusts, 50% anti-influx WP 2000-3000 solution or 10% imidacloprid wettable powder 1500-2000 solution spray was used in a timely manner. Because dwarf mosaic virus is a virus disease, it is recommended to use antiviral agents such as 7.5% chlorhexidine, virus A, and 83 activators, and add foliar fertilizers such as Plant Power 2003 and Nongjiabao when spraying.
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