Liriomyza
Liriomyza, also known as the ghost, is a pest of the Diptera. Mainly harmful to cucumber, tomato, eggplant, pepper, cowpea, broad bean, soybean, kidney bean, watermelon, melon, loofah and other 22 families more than 110 plants.
Control method
Agricultural control: clean the pastoral, timely remove weeds, sick plants, and reduce the source of insects.
Physical control: Yellow plate traps adult larvae and reduces the density of insects in the field. Open field or greenhouse cultivation can insert yellow plate 2 times during the peak period of spotted fly in April-June and August-October, insert 25-30 pieces/mu of yellow plate according to 50cm×50cm specification, which can reduce the field to some extent. The density of pests controls the degree of damage to the leaf miner. In the greenhouse facilities, in addition to the use of yellow plate traps, fumigation agents can also be used to control the damage of the spotted fly.
Chemical control: use 2000 to 2500 times liquid of spotted fly killer, 2000 ~ 3000 times of avermectin, and 1500 ~ 2000 times of silkworm toxin.
Pieris rapae, Plutella xylostella
Pest information
Cabbage butterfly is known as the cabbage butterfly, and the larva is also known as the cabbage caterpillar. The main hosts are 9 families of plants such as cruciferae, Compositae, and Convolvulaceae, which mainly harm cruciferous vegetables, especially those caused by kale, cabbage and broccoli.
Plutella xylostella is a worldwide migratory pest, mainly cruciferous plants such as cabbage, purple cabbage, broccoli, leeks, mustard, broccoli, cabbage, rape, and radish. The characteristics of the damage: the first-instar larvae only feed on the mesophyll, leaving the epidermis, forming a transparent spot on the leaves.
Control method
Agricultural control: strengthen field management, timely remove sick plants and field weeds to reduce insect sources.
Physical control: For the larvae of the larvae of the genus Noctuidae, it is possible to install insecticidal lamps or place attractants in a contiguous manner to trap adult worms, reduce the number of adult adults in the field, and control the damage of Plutella xylostella.
Chemical control: use biological pesticides such as Bt insecticide 2000～2500 times liquid, vegetable hi 2000～3000 times liquid, avermectin medicine 2000～3000 times liquid.
Whitefly
Pest information
Whitefly is also known as the white moth. It belongs to the family Hemiptera. It is a worldwide pest that occurs in all parts of China and is an important pest for planting crops in greenhouses. The host has a wide range of vegetables, such as cucumber, kidney bean, eggplant, tomato, pepper, melon, beans, lettuce and cabbage, celery, green onion and peony. It can also harm flowers, fruit trees, herbs, pasture, 653 species of 112 families such as tobacco.
Control method
Agricultural control: remove weeds in the field, remove old leaves with whitefly, and reduce the source of insects.
Physical control: insert yellow boards or yellow sticky insect papers in the field to trap adults. In the greenhouse, fumigation devices such as dichlorvos are used to control the harm of white powder.
Chemical control: When the whitefly activity in the morning or evening is low, timely use Akthai 7500 ~ 10000 times liquid, imidacloprid 1500 ~ 2000 times liquid, pyrethroid agent 1000 ~ 1500 times liquid for prevention and treatment.
aphid
Pest information
Whitefly is also known as the white moth. It belongs to the family Hemiptera. It is a worldwide pest that occurs in all parts of China and is an important pest for planting crops in greenhouses. The host has a wide range of vegetables, such as cucumber, kidney bean, eggplant, tomato, pepper, melon, beans, lettuce and cabbage, celery, green onion and peony. It can also harm flowers, fruit trees, herbs, pasture, 653 species of 112 families such as tobacco.
Control method
Agricultural control: timely removal of weeds in the field and reduction of insect sources.
Physical control: 25 to 30 pieces of yellow plate are inserted per acre of 50cm×50cm, and the yellow plate is inserted into the piece to control the aphids. In the greenhouse, fumigation can also be used to fumigate dichlorvos and other agents to control the damage of mites.
Chemical control: use Akthai 7500 ~ 10000 times liquid, imidacloprid 1500 ~ 2000 times liquid and other agents.
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