Eggplant red spider is a spider arachnid, mainly for the damage of eggplant, pepper, melon, beans and other vegetables. Eggplant red spider will absorb the sap of eggplant, causing the leaves of eggplant to slowly fall off, causing the death of eggplant plants, which seriously affects the economic benefits of eggplant planting. Therefore, today Xiaobian talks about the damage and control measures of eggplant red spider. Everyone can help.
First, what are the hazards of eggplant red spider?
Red spider is a general term for food-borne mites. The mites that harm eggplant mainly include two kinds of spider mites and sassafras. Both leafhoppers and sassafras are produced by sucking sap near the back veins of the leaves of young clams, nymphs and medlars, but the symptoms of eggplants affected by these two mites are slightly different. After the eggplant is damaged by two leafhoppers, it will cause many grayish white spots on the eggplant leaf surface, and then slowly turn the whole leaf surface into grayish white and yellow, until the leaf surface becomes dry and falls off, and it will lead to serious The entire plant polished rod died. The leaves damaged by the sassafras will ooze the juice on the back of the leaves. When the juice is dry, it will be oily brown, shiny, and the edges of the leaves will be deformed. At the same time, the sassafras will cause a lot of leaves.
When the mites harm the flower, it will cause a large number of fruit drop and fruit drop phenomenon in the eggplant. At the same time, the young fruit damaged by the mites will have a stiff tissue and a turtle-like appearance on the epidermis. In severe cases, the fruit will cause cracking.
Second, how to effectively prevent eggplant red spider?
1. Because the breeding speed of aphids is extremely fast, the key to prevention and control is to clean the pastoral, prevent the initial intrusion, and strengthen the cultivation and management, and timely loosen the soil; scientific fertilization, rational irrigation, promote plant robust growth, enhance Insect resistance.
2. In the initial period of the mites, it is necessary to control the drug several times in succession, and the interval between prevention and treatment is 5-7 days. The pesticides can be selected: 1% chlorfenapyr (insecticide) 2500-3000 times, 73% gram emulsifiable concentrate 2000-3000 times, 5% nisolron emulsifiable concentrate 1500-2500 times, 20% gram emulsion emulsifiable oil 1000- 2000 times, 10% Liuyangmycin EC 2000-3000 times, 7.5% Nongken Dan EC 750-1000 times, etc. for spray control.
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