What pesticides are good for Spodoptera exigua

Spodoptera exigua fruit, with 1500 times 5% avermectin, 2000 times 75% fly amine, 1500 times 5% chlorantraniliprole mixture control effect is very good, during the fruit ripening period every 10 15 days foliar spraying, continuous spraying 2 3 times, that is, can effectively prevent Spodoptera exigua from harm. In addition, it can also be trapped.

Effective control methods for Spodoptera exigua include foliar spraying with a mixture of 1500 times 5% avermectin, 2000 times 75% chlorantraniliprole and 1500 times 5% chlorantraniliprole. These drugs can effectively interfere with and destroy the nerve conduction of pests, and have a good control effect on Spodoptera exigua.

In addition, a variety of comprehensive measures such as agricultural control and physical control can also be used for the control of this pest. For example, tidying up the orchard environment to reduce the number of insect sources, manually removing leaf litter and fruit drop in severely infested areas, and using insect nets during fruit ripening. At the same time, it is necessary to pay attention to the alternating use of different pesticides to avoid the development of resistance.

It should be noted that the evaluation of the control effect of Spodoptera exigua requires continuous monitoring and evaluation, and the control strategy should be reasonably adjusted and optimized according to the specific control effect and needs. In addition, in the process of prevention and control, it is necessary to pay attention to environmental protection and food safety to avoid adverse effects on the environment and human health.

In short, the control of Spodoptera exigua requires the comprehensive application of a variety of measures, including chemical control, agricultural control, physical control, etc., to achieve effective control and reduce its harm.

The effect of pyrethroid is good, specifically, you can go directly to the local pesticide sales point, and the seller will recommend it to you. Hope it helps.

Spodoptera exigua is seriously harmful to navel oranges, often causing navel orange fruit drop, causing great losses to farmers. Therefore, farmers must strengthen their prevention and control measures against the disease. So how to treat Spodoptera exigua?

Today, I will introduce the comprehensive control measures of Spodoptera exigua. 1. Morphological characteristics of Spodoptera exigua: The adult body length of Spodoptera exigua, wings 34 40mm, brownish-red anterior thorax of the head, brown mid-hind thorax and abdomen, and grayish-white ventral surface. The end of the adult mouthparts is slender and sharp, keratinized, with conical protrusions on the side, and the mouth needle is usually curled under the head, and the mouth is clear and the needle is elongated and pierced into the fruit when sucking the fruit.

The antennae are filamentous, the forewings of the female are purplish-red, with an "N" shaped pattern, and the posterior margin is notched. The males are russet brown with brown hindwings. The eggs are oblate and spherical, milky white, slightly shiny, and the color of the eggs turns gray after 1 2 days.

Larvae, mostly 6 instars. Pupa, 18 20 mm long, 5 6 mm wide, reddish-brown. 2. The occurrence law of Spodoptera exigua, which occurs in 4 generations in 1 year, overwinters in or near the base of the leeward and sunny weeds of the Lewward and Sunward Weeds of Spodoptera exigua, and the generations in the field overlap.

The first generation of Spodoptera exigua, which occurred from late May to late July, mainly harmed fruits such as P. peach. The second generation occurs from early July to early September; The 3rd generation occurs from mid-August to early October; The fourth generation occurs from late September to early to mid-December, and the first generation is harmful to navel oranges, and the damage is more severe in October. After the adult emerges, it needs to take fruit juice to supplement nutrition, which has strong chemotaxis, likes aroma and sweetness, and the better the fruit quality, the more serious the damage. During the day, they are mostly scattered in weeds, crops, tree trunks, etc., and they begin to enter the park in the evening.

In October, the number of insects peaks at 17:00 and begins to decrease at 4:00, 5:00

00 is difficult to find. During the fruit ripening period, the insect population density is generally high before 22:00, 0:

After 00, the temperature dropped and flew away one after another. When the temperature drops below 13, the insect population in the park is basically extinct when the night temperature drops to about 10. After the damage falls the fruit to 11-12 months heavier.

The damage degree of Spodoptera exigua is closely related to the control time and control method, and there are great differences among different orchards, and the fruit damage rate is 85% for those with light fruit damage rate and plant damage rate. It can be seen that the control of Spodoptera exigua adults is one of the important measures for the cultivation of navel oranges in mountainous areas. 3. The comprehensive control measures of navel orange fruit-sucking Spodoptera exigua light trapping use the strong phototaxis of Spodoptera exigua adults, and use solar insecticidal lamps to trap and kill in production, generally place 1 insecticidal lamp every 2hm2 orchard, place the solar insecticidal lamp in the orchard or the hill or open land next to the orchard, so that the light radiation area is subject to the stove, place a plastic insect basin with a diameter of 60 80cm under the lamp, and the water height in the basin is 3 4cm, and add a small amount of engine oil or contact pesticides to achieve the purpose of killing insects. The insecticidal effect is good.

Chemical pesticides are mainly used to spray with Baishude or 40% probromidin, and the adult Spodoptera exigua, with its odor. Autumn and winter (early September to late November), every 20 25

Noctuidae exigua will absorb the sap of the plant, malnutrition, and finally the plant will lose its vitality, need to dilute dichlorvos, trichlorfon, cypermethrin, acemethamidophos emulsifiable concentrate and other pesticides to the noctuidae every other week, until the exigua completely dies, in the process of spraying the noctuidae exigua, it is necessary to keep the environment ventilated.

Noctuidae is a kind of insect that flies phototaxis at night, it will absorb the sap in the plant, so that the plant grows poorly, so what pesticides can be sprayed by noctuidae, in fact, noctuidatum can be sprayed with pesticides such as dichlorvos, trichlorfon, cypermethrin, acemethamidophos emulsifiable concentrate.

When the plant is harmed by the noctuidae, it can not be sprayed directly with these pesticides, otherwise it will also affect the normal growth of the plant in the soil, it needs to be diluted with water in a certain proportion, and then sprayed the plant once every other week until the noctuidae is completely killed.

During the spraying of pesticides on the armyworm, it is necessary to place the plants in a ventilated environment, which can make the plants recover their vitality faster, avoid the pesticides can not evaporate well, pollute the air, and also cause harm to health and cause bad effects.

If there are yellowing and dry branches and leaves, then they need to be cut off in time, and a large amount of fertilizer can be applied to the plant to provide enough nutrients to the plant to avoid the plant losing its vitality in advance, and it is not suitable to apply too much, otherwise there will be a phenomenon of burning roots.

<> control of Spodoptera exigua insects can be treated with chlorantraniliprole, chlorfenapyr, fenozazide, indoxacarb, Bacillus brevis, Spodoptera litura, Spodoptera exigua, polyhedrovirus, ethyl spinosa, etc.

<> Spodoptera can be sprayed with 1500 times of the compound virus insecticide insect plague No. 1, which is basically harmless to the environment and humans and animals, with a safety interval of 2 days, or 2000 times of 5% anti-Taibao emulsifiable concentrate, and a safety interval of 7 days, or 2000 times of 5% stuck gram emulsifiable concentrate, and a safe interval of 14 days. Quarrels.