Citrus red spiders and rust ticks are one of the major pests in the citrus production area. They have two peak periods in a year, namely spring and autumn. According to observations in the citrus production area, when the temperature is about 20°C in the autumn, the spider mites will happen greatly. If there is poor early control, then the red spiders will have a peak of damage from late August to October.
To control citrus spider mites and rust ticks, note the following: First, on the basis of good prevention and control, the prevention and control of the above-mentioned two kinds of pests in autumn is the key to ensuring high yield and quality of citrus. In August, one acaricide was sprayed. It can not only control the carp damage of the red spider, but also prevent the damage of the fruit surface on the rust wall. In September-October, when the red spiders peaked for the second time, they sprayed one or two acaricides for two purposes.
The second is referring to prevention and treatment indicators. When there are 10 to 12 red spiders on each leaf in the fall, the rust mites take 20 leaves or young fruits on the top, middle, and bottom of each tree canopy and carefully examine them with a magnifying glass, when 20% of the leaves are found or When there are insects on the fruit, they should be sprayed immediately. Can also be used visually: When a thin layer of dust-like material is found on the fruit or leaves (if the fleas are crusted), the density of the larvae is already very high and should be sprayed immediately.
The third is the rational use of acaricides. The pesticides that can be used for preventing and controlling Starscream are: Crystal Lithium Sulfur Mixture (Lithium Sulfur Mixture without self-suppression) 150 times, or 20% DDP Net 3000X, 40% Krypton 2000~3000X Liquid, Endangered 4000 ~ 5000 times liquid and so on. In addition, the soil pesticide urea laundry detergent mixture, that is, according to 1 kg of detergent powder plus 400 to 600 kg of water, and then add 0.5 to 1 kg of urea to prepare a mixture after mixing can be sprayed, spray 1 to 2 days, the effect can be up 90% or so. Prevention of rust ticks can be used: Dasheng M ~ 45 (80% mancozeb wettable powder) 600 times the liquid, terracotta antibiotics hold a period of up to 30 to 60 days, but also concurrent cure soot. New type oil emulsion (Lv Ying) 150 to 250 times liquid; 20% Sweeper 3000 to 4000 times liquid, 65% Dyson Zinc 500 times liquid; or 73% Krypton 1500 times liquid, all of which are very resistant to rust Good drug kill effect.
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