How to cure maggots from green onions? What to do if the shallots have maggots

Trick to cure maggots in green onions: After melting trichlorfon into water in a certain proportion, pouring into the roots of green onions can solve the problem!

Summary. To solve the problem of onion maggots, prevention should be the mainstay, prevention and control should be combined, especially pay attention to the early prevention as follows:

First, use EM bacteria to make the bottom fertilizer of chicken manure treatment (EM bacteria can also be used for soaking, dipping roots and flushing, can make the plant robust and good quality, good taste), reduce the breeding of insect eggs, if possible, can gradually replace chicken manure with pig and sheep manure, because pig and sheep manure, especially sheep manure has a natural avoidance effect on onion maggots;

Second, when arranging crop planting, we should pay attention to stubble;

Third, if you encounter continuous rainy weather, you should pay attention to the sunny day, turn the soil in time, dry the soil, and make the soil soft and breathable.

Fourth, pay attention to the prevention and control of pests such as leaf miner flies and reduce insect eggs.

What to do if the shallots have maggots

To solve the problem of onion maggot to prevention, prevention and control combined, especially to pay attention to the early prevention as follows: first, use EM bacteria to do the chicken manure of the bottom fertilizer of the shed tung tree (EM bacteria can also be used for soaking, dipping roots and flushing, can make the plant robust and good quality, good taste), reduce the breeding of insect eggs and liters, if possible, you can gradually replace chicken manure with pig and sheep manure, because pig and sheep manure, especially sheep manure has a natural avoidance effect on onion maggots; Second, when arranging crop planting, we should pay attention to stubble; Third, if you encounter continuous rainy weather, you should pay attention to the sunny day, turn the soil in time, dry the soil, and make the soil soft and breathable. Fourth, pay attention to the prevention and control of pests such as leaf miner flies and reduce insect eggs.

After the occurrence of onion maggots, follow the following operations: when allium maggots do not occur or occur in small amounts, matrine can be used to transport the ridge (preferably produced by regular manufacturers, which can be used) with cypermethrin (concentration irrigation, or spraying and applying pesticides at the boundary between green onions and soil, and effectively curbing the continued reproduction of allium maggots when it is infiltrated.

<> peak of adult emergence, spray with deltamethrin 3000 times. For the onion field where allium maggots have occurred, you can choose to use 50% phoxanthion residue 800 times in advance, or 80% trichlorfon Solianghe wettable powder 1000 times, 40% dimethoate emulsifiable concentrate 1000 times liquid spray control, or 50% octathion 1000 times liquid Shipai or 40% methylisosulfonate 1000 times liquid irrigation root.

1. Agricultural prevention and control: the first generation and the fifth generation, control the second generation, and take the method of surprise medication before the rain to ensure the prevention and control effect, use fully decomposed manure, and cover the manure with a layer of toxic soil or mix a small amount of chemicals. 2. Booby trapping adults:

Use brown sugar and vinegar for prevention and control, the proportion is to add a small amount of sawdust and trichlorfon, and put it in the trap box. 3. 3-4 generations of onion root maggots occur in the north in 1 year, and overwintering in the soil with pupa.

1. What to do with maggots at the root of shallots

1. Agricultural prevention and control.

1) The first generation and the fifth generation must be treated fiercely during the prevention and control, and the second generation must be controlled.

2) You can use fully decomposed manure for shallots, cover the manure with 1 layer of poisonous soil or mix a small amount of chemicals.

3) Early spring ploughing, which can avoid exposure to wet soil and attract adults to lay eggs.

4) Be sure to water around noon on a sunny day, the soil surface will dry quickly after watering, interfere with the hatching of eggs, and avoid larvae from drilling into the soil.

2. Booby trapping adults:

1) You can use brown sugar, vinegar and water for control, and the ratio is that a small amount of sawdust and trichlorfon can be added to the liquid medicine.

2) Put the prepared agent into the trap box, open the lid of the box every day during the peak of adult activity, trap and kill the adult, and add half an amount of the trap every 5 days.

3. Onion root maggots occur in 3-4 generations in 1 year in the north, and they mainly overwinter in the soil with pupa. In early spring, the adults begin to appear in large numbers and lay eggs on the moist soil near the roots, and after hatching, the eggs will move down the green onion and white, concentrating on the stem discs, causing the roots to rot, the leaves to yellow, and the plants to die. In all generations, there are some pupal diapause after overwintering and concentrate on spring emergence, so the allium fly is generally more harmful in spring, lighter in summer, and also occurs in autumn.

Second, what medicine is used to prevent and control maggots in the roots of shallots

1. When the adult is at its peak, it can be sprayed with deltamethrin 3000 times for prevention and control. For the green onion field where maggots have occurred, you can choose to use 50% phoxanthion 800 times, 80% trichlorfon wettable powder 1000 times, 40% dimethoate emulsifiable concentrate 1000 times for spray control, or 50% octathion 1000 times or 40% methylisosulfonate 1000 times solution for root irrigation.

2. Allium flies are oligophagous pests, which only harm lily vegetables such as onions and garlic, so when planting, heavy stubble with onions and garlic will increase the probability of maggots. If the soil is not deeply turned or frozen before sowing, or if organic fertilizer is not fully decomposed, and manure is applied during the peak period of adults, it will lead to the appearance of allium maggots.

3. In the process of seedling, planting and field management, if the plant is injured due to improper operation, it will attract adults to lay eggs, and the plant will rot during the storage period. If the field is dry, the watering is not timely, the green onion root is dry and cracked, the green onion maggot will concentrate on harming the normal plant, eat the green onion white, and then lay eggs and leave it in the soil to continue to harm.

Summary. Dear, hello, if you use organic fertilizer, this must be rotten, and it is not good if it is not rotten. To control adult insects, you can use avermectin emulsifiable concentrate 1500 times liquid spray.

Dear, hello, if you use organic fertilizer, this must be rotten, and it is not good if it is not rotten. To prevent and control round worms in Chengyou Hall, you can use avermectin emulsifiable concentrate 1500 times liquid spray.

I have 6 acres of maggots.

If you are controlling larvae, you can use 800 cups of liquid with 1% matrine water.

Is it OK to spray the blades directly? I buy egg trichlorfon, you can also use, 35% phoxanthion microcapsule suspension, with 600ml of root irrigation per acre.

Yes, so can the spray blades.

Does dimethoate cure maggots?

Of course, it is possible, but this medium toxicity is also relatively harmful to the human body.

What if you spray green onions, people eat them or domestic animals, and you get poisoned?

There are white spots on the leaves, what are they? Is trichlorfon and dimethoate direct spray effective against maggots? It's okay, I won't eat it for the time being.

You can use trichlorfon, dimethoate may be a bit toxic, of course, these two can also be used.

If there are white spots on the green onion leaves, this is caused by a fungal infection.

We're talking about white spot disease, or gray mold, but insect infestations can also be caused, such as thrips.

I mean, what Ye Ying has done.

Do you think there are flies? It is possible to use the two pesticides above.

If there is vitiligo, it needs to be used in conjunction with other pesticides.

Mancozeb and the like, you can do it.

Maybe the thrips you said are stupid, it's all white lines, what is it? Is dimethoate okay? Because I still have dimethoate at home, Dysen Fierce Zinc, I mean to say that the one-time spray is finished, is it okay? It's okay to be right.

Yes, yes.

You can also use dimethoate now, or the trichlorfon you said, and ** this onion maggot first.

After a while you use it, you are using mancozeb.