Liriomyza

Liriomyza is a member of the family Muscidae. Liriomyza sativae has more than ten species such as pea leafminer (also called rape leaf miner), spinach leaf miner, clover leaf miner, chrysanthemum leaf miner, harming tomato, potato, gourd gourd, pea, rapeseed, cabbage, Radish, spinach, beet, lettuce and so on. Liriomyza larvae invade leaves and petioles causing harm. Foraging on leaf flesh, leaving only the upper and lower epidermis, forming a zig-zag road, in the event that the whole leaf withered, causing the leaf to lose its food value. pea. After the damage of rapeseed, it affected the fullness of the fruit and severely reduced the seed quality and yield. The larval development is obviously affected by temperature and host plants. The average larval stage above 24°C is 4-7 days. In the range of 19-34°C, the development cycle is short, there are many generations and the overlap of generations is obvious, and the larvae's lifestyle is hidden. Above 35°C, the natural mortality rate is high, and the activity is weakened. Even after the fleas have crossed the summer, the fall begins to incur damage. The eggs are sparsely distributed in the dorsal margin tissues, especially at the tip of the leaves. Prevention and control measures: (1) Grasp the spawning period to the initial stage of incubation for drug control. The following methods can be used for prevention and treatment: There are about 15 species of parasitic natural enemies of Liriomyza sativae. The important ones are: Bees, double-carved bees and so on. (2) 1.8% efodant EC 2000-3500 times; 0.9% e-formin EC 2000-3000 times; 24.5% e-form EC 1000-2000 times; 5.5% ACF 1000-1500 times liquid, control efficiency are above 90%.

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