The locust infested by sorghum is mainly sorghum. The high mistletoe attracts nutrients on the back of the host plant. In the early stage, it is mostly damaged by the lower leaves of the sorghum plant and gradually spreads to the upper leaves of the plant. It secretes a lot of honeydew and drips on the lower leaves and stems. Photosynthesis and normal growth of the plants resulted in a reddish-yellow “bald neckâ€, “acupuncture tip†and a small number of spikelets, which affected the yield and quality of sorghum.
When the sorghum field stubble strain rate reaches 30% to 40%, when the "oiling strain" occurs, or when 100 strains of worms exceed 20,000 heads, control is needed. The following methods can be used for prevention and control: 1 Early eradication of the central loquat strain can be carried out by gently cutting the bottom lobe of the loquat, and bring it out of the field for destruction, and a 0.5 tablet of dimethoate powder or 40% dimethoate EC 1500 times solution should be applied. 2 can use 40% of Lego 50 grams of emulsifiable concentrate, equal amount of water evenly mix in 10-13 kilograms of fine sandy soil, formulated with dimethoate soil, in front of heading and sprinkle in the sorghum plant. 3 can use 50% of the acacia pine ECG 1000-3000 times, or 2.5% deltamethrin or 20% cypermethrin 5000-8000 times spray control.
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