How long do corn bugs live at room temperature? When does the damage period of corn armyworm end?

Corn seeds stomach.

Or the corn seed is not long at room temperature or the time is not long, because he has to pass through the eggs and corn seeds at room temperature or the time is not long, because it has to go through several stages such as egg larvae and adults, generally about a month, generally about a month.

Corn worms can generally live for about 3 to 5 days at room temperature!

Corn borer is related to temperature and humidity environment, generally eggs hatch for 4-5 days, larvae grow for 10 to 15 days, pupae emerge in 10 days, and adults die in 5-10 days. Corn borer is related to temperature and humidity environment, generally eggs hatch for 4-5 days, larvae grow for 10 to 15 days, pupae emerge in 10 days, and adults die in 5-10 days.

The accumulated temperature of effective development of corn armyworm was as follows: egg stage, larval stage, pupal stage, and adult oviposition for 111 days. The entire life history is daily. Based on the average daily temperature at that time, the number of days elapsed in each period can be calculated.

In nature, the first generation of eggs is 6 to 15 days, and the subsequent generations are 3 to 6 days; The larval stage is 14 to 28 days, the pre-pupal stage is 1 to 3 days, and the pupal stage is 10 to 14 days; Adult oviposition pre-3 7 days; It takes 40-50 days to complete the 1st generation.

How long do corn bugs live at room temperature? I think corn bugs can live a long time at room temperature. Because the corn worm eats corn in the corn, at room temperature, he is not only alive, but also reproduces. So be sure to dry the corn so that it doesn't survive.

Corn worms can live for two days at room temperature without a problem. In two days, you may not be able to survive.

Corn borer: Corn borer, commonly known as borerworm, belongs to the Lepidoptera and Moth family, and is the main insect pest of corn. It can harm all parts of the ground of corn plants.

Corn borer generally occurs in 2-4 generations a year, with high temperature and low altitude, and more generations. Adults are nocturnal, have strong flying ability, phototaxis, have a lifespan of 5-10 days, and like to lay eggs on both sides of the midrib on the back of corn leaves that are more than 50 cm above the ground and grow more luxuriantly.

It takes about 10 days to work, which is a relatively long time.

How long can corn worms live at room temperature? I think this kind of insect can live for a long time at room temperature, because if he is there, as long as you don't go to the turmoil, he may be the one you can live for a few days.

Just throw it in the refrigerator to keep it fresh, and if it is above 20 degrees, it will die.

Armyworms are also known as multicolored insects, marching insects, and night thief insects. It is a migratory, gluttonous and omnivorous pest. The main types of crops that are harmed are corn and other cereal autumn grain crops.

When it is severe, the corn stalks are often eaten up overnight, resulting in a lack of seedlings and broken ridges, or even no yield. Adult armyworms are diurnal and nocturnal, and larvae are mostly active in the morning and evening, that is, from sunrise in the morning to before 10 o'clock and around evening. Like to eat gramineous crops and weeds, the amount of food increases by age, the fifth to sixth instar is the gluttony stage, with the characteristics of cluster harm, gluttony, omnivorous, larvae often cluster migration hazards, so it is also known as "marching insects".

The first and second instar larvae only eat the mesophyll into a skylight, and after the third instar, they eat up most of the leaves when the damage is serious, leaving only a very short midrib. Frightened larvae have the habit of feigning death and diving into the soil. The second and third generations mainly harm summer maize.

Generally, the fields with watered land, the fields with more fertilizer and dense planting of wheat in the previous crop, as well as the plots with extensive management, overgrown weeds and neglected control, due to sufficient food sources, suitable temperature and humidity, are conducive to the oviposition of adults and the growth and development of larvae, and the density of insect population in the field is large, and the harm is relatively serious.

The main symptom of corn armyworm is that the larvae eat the corn leaves, and when it is serious, the leaves are eaten up in a short period of time, resulting in reduced yield or even no harvest. Generally, fields with low terrain, uneven corn plants, and overgrown weeds are heavily damaged.

Prevention and control measures: agricultural control: hard stubble sowing fields, after the emergence of corn seedlings, shallow tillage should be carried out in time to destroy the habitat environment of corn armyworm and reduce the source of insects.

Manual killing: After the corn emerges, the larvae are manually pinched in the morning and evening when the larvae feed.

Chemical control: the main thing is to master the application time. Because the older the armyworm larvae, the stronger its resistance, according to studies, the resistance of instar larvae is 10 times higher than that of instar larvae.

Therefore, it is necessary to grasp the young age of larvae in order to achieve better control results.

Hello, it is a pleasure to serve you and give you the following answer: corn worms can be raised until November, and some of them can be raised until December. The occurrence of corn insects is generally affected by climate and temperature, and in the case of higher temperatures, corn insects reproduce faster and are prone to insect pests.

In order to control corn worms, the following measures can be taken:1Strengthen the management of farmland, timely weeding, and prevent the hatching of corn insects and their eggs; 2.

timely application of effective insecticides, such as pyrethrins, cypermethrins, methylbenzopyrene, imidazolidines, etc.; 3.Strengthen field monitoring, detect insect pests in a timely manner, and take effective measures; 4.Reasonable fertilization, control soil fertility, promote the growth of maize plants, and resist pests; 5.

Rational use of chemical pesticides, avoid pesticide residues, and reduce the production of resistant insects. The above is about the control methods of corn insects, but in order to truly and effectively control corn insects, it is also necessary to combine local climate conditions and adopt effective comprehensive control measures to achieve the purpose of effective control of corn insects.

This is a corn borer, it may be that the moth has laid eggs in your house, and you can use pesticides.

Corn borer (Latin scientific name: ostrinia nubilalis) is the main insect pest of dusty corn, belonging to the lepidoptera, moth family, can occur in all parts of the ground that harm corn plants, so that the damaged part loses its function and reduces the grain yield.

Corn borer is suitable for development under high temperature and high humidity conditions, and the temperature is high in winter, and the number of natural enemies is small, which is conducive to the reproduction of corn borer, and the harm is more serious.

The harm of corn hopper borer is mainly because the leaves are bitten by larvae, which will reduce their photosynthetic efficiency; The male panicle is moth-eaten and often easy to break, affecting pollination.

Other prevention and control. 1. Light trapping: use high-pressure mercury lamps or frequency vibration insecticidal lamps to trap and kill corn borer adults. The lights are on in early July and early August.

2. Biological control: the use of red-eyed bee control, the bee release time is 10 days after the local corn borer pupation rate reaches 20%, and the second bee release after an interval of 1 week.

3. Chemical control: at the end of the corn heart leaf (5% tasseling), 40% phoxanthion emulsifiable concentrate is prepared into granules and sprinkled in the horn tube.

1. The temperature is as low as possible, and pests below 18 degrees are almost inactive and do not reproduce.

2. Fumigate and kill insects with aluminum phosphide, and prevent insects in low dose. This is a method often used by grain depots.

3. Mix insect-free corn with the surface layer of insect-proof phosphorus.

4. Isolate new corn without insects. The premise is that the grain storage container is strictly insecticidal and insecticide, and there are no insect eggs.

What problems are prone to occur in the process of corn storage?

1) Fever. Corn is a large-grained and large-embryo seed, the seed embryo is large, and the respiration of the seed is vigorous, so it is easy to heat up, resulting in seed deterioration.

2) Rancidity. The fat content of corn seed germ is high, such as high temperature and high humidity, it is easy to produce free fatty acids, which increases the acidity and affects the vitality of the seed.

3) Mildew. The germ of corn seeds contains more soluble sugar, and the seed skin of corn is also barked, which is easy to grow mold and cause seed deterioration.

Just look at the treasury.

1. The temperature is as low as possible, and pests below 18 degrees are almost inactive and do not reproduce.

2. Fumigate and kill insects with aluminum phosphide, and prevent insects in low dose. This is a method often used by grain depots.

3. Mix insect-free corn with the surface layer of insect-proof phosphorus.

4. Isolate new corn without insects. The premise is that the grain storage container is strictly insecticidal and insecticide, and there are no insect eggs.

Hello, I'm glad to answer for you, corn insect control has the following methods: First, be sure to completely dry the corn before storage. Find a thicker plastic bag in the shape of a bucket and tie one end tightly with a rope.

Then put the dried corn and some insects, mildew and safe medicines into the plastic bag together with the corn, and tie the other end of the plastic bag tightly.

Find a dry house and put a layer of bricks or other indestructible things on the bottom of the house to prevent pests. A sheet of iron is then placed in a bucket shape on the brick-covered ground, and a plastic bag full of corn is placed in a "tin bucket". Finally, use a wooden board or an iron sheet to cover the upper part of the "iron bucket" tightly.

Generally, our home users use the above methods to store corn, and my family has stored corn and millet for three years at the longest, and it has basically not deteriorated. However, there are some large-scale buyers or large households are made of cement and other building materials to make moisture-proof, waterproof, insect-proof corn warehouse, although the effect of this corn warehouse storage corn is good, but the cost is relatively large, this is up to your own consideration.

Hopefully, this answer will help you.

Put peppercorns in the corn, peppercorns can prevent insects.

Pest control.

1. Corn borer Corn borer, also known as corn borer, field control can be divided into two periods, namely the end of the heart and leaf and the ear stage.

Prevention and control at the end of the heart leaf: when the rate of insect plants reaches 10%, the ash of the furnace is mixed with phosphine granules at 1:15, and 1 gram per plant is sprinkled into the bell mouth.

Spike control: After heading, spray the axils of the female spike and the upper and lower leaves of the female spike with 1000 times of 50 phosphine emulsifiable concentrate.

2. Armyworm Armyworm is commonly known as night thief insect, which is an explosive destroyer and exterminating pest. When there are 20-30 insects in 100 plants in the seedling stage of corn field, and 50-100 insects in 100 plants in the middle and late stages of growth, drug control should be carried out. Trichlorfon powder can be sprayed with 2-kg per mu, or 10-15 kg of fine soil with 2 kg of trichlorfon powder, mixed well and sprinkled along the ridge.

3. Aphids With the promotion of compact hybrids, aphids have become the main pests in the late growth stage of corn, and there are two control methods. Spraying prevention and control during jointing: After corn jointing, check line by row, and find that the central plant is harmed, use 50 ml of 40% dimethoate emulsifiable concentrate, and add 50 75 kg of water.

75 kg of medicinal solution per mu.

Late control of corn at the end of the big flare: use 50 ml of 40% dimethoate, mix 15 kg of sandy soil with kilograms of water, and sprinkle 1 gram per plant.

4. Red spiders and thrips Red spiders generally harm corn in the heading buckle, and thrips harm in the seedling stage. Prevention and control methods: 40% oxidized dimethoate emulsion kg per mu, spray 40 kg to 50 kg of water.

The best thing is in the morning, when the bugs are coming out to eat, and they hide as soon as it gets hot at noon.

Aunt Xue, a slave of the Xue family: Tongxi, Tonggui Xue Baochai: Ying'er, Wen Xing, Ruiguan.