Citrus mealybugs occurred from mid-August to early September, and the orange groves with poor ventilation and light transmission suffered more.
Agricultural control through the implementation of agricultural measures, improve the ecological environment of the Orangery, create favorable conditions for the growth and reproduction of natural enemies, to achieve the purpose of controlling the damage of whiteflies. In the first generation of adults emerged during the emergence period, a large number of summer hairpin hair extraction period, the entire garden should be timely eradication of summer shoots, clear adult spawning sites, can effectively reduce the hazards of future generations, then shoot can also be treated citrus Leaf leaf moth. Orangery planting green manure, retaining orchard benign weeds, can increase the humidity of the field's small environment. It is beneficial to the survival and reproduction of the main natural enemies of the citrus aphid, the powder whitefly, and increase its parasitism rate against whitefly.
Biological Control The collected citrus spores that have parasitic parasitic spores are hung in orchards that are endangered by whiteflies, increasing the parasitism rate of large-scale orchards and reducing the occurrence base.
Reasonable use of drugs in the case of severe occurrence of citrus mealybugs, chemical control is still the main means of prevention and treatment. It can be sprayed with 15-20 times solution of pineine mixture, 800-1000 times of 40% culling EC, 1000-1500 times of 48% laconic emulsion, 2500-3000 times of 10% imidacloprid powder. Note that different types of insecticides should be used interchangeably. The combination of the above agents and oil emulsions (300 times liquid) can improve control efficiency and concurrent cure for soot disease. Severe incidence of orange trees to a unified time, a unified agent, a comprehensive spray, near the Orange Park must strengthen the inspection, pick pest control strains.
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