According to the investigation of plant pest monitoring sites at the provincial plant protection and phytosanitary inspection station, since late August, the adult moth pests in vegetable production areas in our province have long production periods and high moths, and some of them are in field vegetables, soybeans, and peanuts. Tau Tau fields have large eggs. Combined with the comprehensive analysis of weather conditions, experts predict that the young larvae of Spodoptera litura and Spodoptera exigua will enter the peak stage in the middle and early September, which is a favorable period for prevention and control.
Spodoptera litura and Spodoptera exigua are important pests in autumn crops, soybeans, peanuts and many other crops in the field. They have a wide range of hosts, miscellaneous feeding habits, and many crop varieties.
Experts suggested that farmers’ friends should timely organize prevention and control of cruciferous vegetables, taro, beans, peanuts, and other high-yield plots based on pest conditions. After missing the appropriate period of control, older larvae have strong resistance to drugs and are difficult to control.
Control methods
1, trapping adult worms. Use adult sex attractants and insecticidal lamps to trap adult insects.
2, agricultural control. According to the characteristics of the newly hatched larvae cluster hazard, combined with agricultural operations, timely removal of the newly hatched eggs and leaves, killing egg masses and insect nests, reducing the number of pests in the field.
3, chemical control. In the period of egg hatching to 1-2 larvae larvae prophylaxis and control, once again at intervals of 5-7 days, the control agent can use chlorantraniliprole, chlorfenapyr, tebufenozide, indoxacarb, short-acting bacillus, twill Noctuid nuclear polyhedrosis virus, beet armyworm nuclear polyhedrosis virus, spinetolide and other agents.
In addition, the expert reminds the farmer friends to pay attention to the following things when they are controlling:
1. Noctuid larvae have nocturnal habits. It is advisable to spray in the early evening. When spraying, the front and back of the leaves should be sprayed. At the same time, the ground near the plant rhizosphere must be sprayed at the same time to prevent it from falling on the ground or The larvae drilled into the soil surface leaked.
2. Note that agents are used alternately to prevent insects from developing resistance.
3. It is forbidden to use restricted-use pesticides and strictly comply with the prescribed interval between pesticides.
4. Sericulture areas should pay attention to the protection of silkworms to ensure that no poisoning accidents occur.
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