Metaldehyde Powder CAS 108-62-3

Tetraacetaldehyde is a highly selective neurotoxic insecticide mainly used for controlling soft bodied pests such as snails and slugs. Its mechanism of action is mainly through contact killing and gastric toxicity, with contact killing having a stronger effect than gastric toxicity. When snails come into contact with drugs, the drugs can release a large amount of acetylcholinesterase inside the snail, destroy the special mucus inside the snail, cause rapid dehydration, nerve paralysis, and secretion of a large amount of mucus. Pests die from poisoning in a short period of time due to the loss of a large amount of bodily fluids and the destruction of cells. Tetraacetaldehyde has low toxicity to humans and livestock, and low toxicity to environmental organisms such as fish and silkworms.

It is currently an excellent pesticide for controlling soft bodied pests such as snails.

It has multiple excellent characteristics, making it widely applicable in agricultural pest control. It has a wide insecticidal range and can be used to control various soft bodied animals such as snails and slugs on crops such as rice field snails and snails, vegetables, cotton, corn, and tobacco. Good quick acting effect, once snails come into contact with this medicine, they quickly cause nerve paralysis, stop feeding, and effectively protect the leaves from further damage. Long shelf life, granules are not easily decomposed at high temperatures, and when applied in the field, the shelf life can reach more than 50 days, effectively reducing the number of spraying times.

High temperature has high activity and is greatly affected by temperature. The higher the temperature, the higher the activity and the better the insecticidal effect. The highest activity and the best control effect are achieved within the temperature range of 15-35 ℃. In addition, tetraacetaldehyde has low toxicity and minimal toxicity to non target organisms, making it particularly suitable for killing snails and snails in aquaculture and mountainous areas. Metaldehyde powder can completely replace products such as molluscicides. Easy to use, to attract snails to feed, it is often made into granules together with attractants. When using, simply spread the agent evenly in the areas where snails often appear in the field.

(1) Vegetable crops
Vegetable crops are one of the most widely used fields. In the cultivation process of cruciferous vegetables such as cabbage and bok choy, the harm of soft bodied pests such as snails and slugs is particularly severe. These pests will gnaw on vegetable leaves, causing holes in the leaves, seriously affecting the quality and yield of vegetables. Tetraacetaldehyde granules are a commonly used formulation for controlling soft bodied pests on vegetable crops. After sowing, the seeds can be used when they sprout. 400-600 grams of 6% formaldehyde granules can be used per acre, mixed with fine sand and evenly sprinkled with medicine;

You can also sprinkle medicine after transplanting in the transplant field. Generally, 400-544 grams of 6% formaldehyde granules are mixed with fine sand per acre and then sprayed. It can also be applied in strips or dots, with a distance of 40-50 centimeters from the seedlings. In case of serious situation in the field, 40-50g of 80% tetraacetaldehyde wettable powder can be used, and 30kg of water can be mixed to evenly spray, which can quickly kill the snail pests being harmed. 

For leafy vegetables, due to the dense leaves, snails are prone to hiding inside, making prevention and control difficult.

At this time, the method of spray can be used for prevention and control. Generally, 80% of the tetraacetaldehyde powder is used to prepare 500 times liquid, and then spray all over the field for control. However, it should be noted that when spray, the back of leaves, middle and lower parts of plants should be sprayed to ensure that the pesticide can fully contact with pests. In addition, due to the hidden and migratory nature of snails, it may be appropriate to determine whether they need to be sprayed once. After spraying this medicine, in case of heavy rain, the medicine will be diluted, reducing its efficacy, and supplementary application is needed.

(2) Rice crops
Soft bodied pests such as apple snails and nail snails in rice fields are also a major challenge in agricultural production. These pests will gnaw on rice leaves and roots, affecting the normal growth and yield of rice. Tetraacetaldehyde has significant effects in controlling soft bodied pests in rice fields. After transplanting and throwing rice seedlings for one day, use 400-600 grams of 6% formaldehyde granules per acre, evenly spread in the rice field, and maintain a water level of 2-5 centimeters for 3-7 days.

It can effectively kill apple snails and nail snails in rice fields. In serious cases, 40% tetraacetaldehyde suspension can also be sprayed with 200~400 times liquid spray, which can quickly kill all kinds of snails.

When controlling soft bodied pests in rice fields, attention should be paid to the amount and timing of pesticide application. Insufficient application may not achieve the desired control effect, while excessive application may result in pesticide residues, affecting rice quality and ecological environment. The application time should be selected during the period of frequent snail activity, such as dusk or early sunshine after rain, to improve the control effect of the pesticide.

(3) Tobacco crops
The harm of snails and slugs in tobacco cultivation cannot be ignored. These pests will gnaw on tobacco leaves, causing incomplete leaves and affecting the quality and yield of tobacco. After tobacco transplantation, in the early stage of snail or slug occurrence, the pesticide can be mixed with fine sand and sprayed. Use up to once per season and strictly follow the recommended dosage for application. By reasonable application, the number of soft bodied pests on tobacco crops can be effectively controlled, ensuring the normal growth and yield of tobacco.

(4) Cotton crops
Cotton is one of the important economic crops, and its growth process is also susceptible to soft bodied pests such as snails. In cotton cultivation, metaldehyde powder can be used to protect seedlings. After crop transplantation, using 100 grams of this product to evenly spray 3 buckets (45 kilograms) of water on the root of the crop can achieve the desired seedling preservation effect. By timely prevention and control of soft bodied pests, the loss of cotton seedlings can be reduced, and the survival rate and yield of cotton can be improved.

(5) Fruit tree crops
Fruit trees such as kiwifruit are also susceptible to the harm of snails. Snails will gnaw on the leaves and fruits of fruit trees, affecting their growth and fruit quality. For the prevention and control of kiwifruit snails, tetraacetaldehyde can be applied during the early stages of snail occurrence, often by spraying. The best application effect is achieved in the evening before sunset or after rain when it turns sunny, because snails are active in feeding at this time. The safety interval is 14 days, and the crop can be used up to 2 times per season. By scientifically and reasonably applying acetaldehyde, the number of snails on fruit trees can be effectively controlled, ensuring their normal growth and fruit quality.

(1) Sashi method
Spraying method is one of the most widely used methods for the application of formaldehyde. Purchase 6% formaldehyde granules produced by legitimate domestic manufacturers and use 500-1000 grams per acre of land. You can mix soil and spread it, or cut a small hole on the packaging and spread it around the field. Set up several pesticide points on the central ridge of the field to fully lure and kill snails.

The advantage of the spraying method is that it is easy to operate, can evenly distribute the pesticide in the field, and has a long shelf life. However, it should be noted that when spraying, avoid directly spraying pesticides on crops to avoid causing pesticide damage to them.

(2) Spray method
The spray method is suitable for snails with high density or hidden in crop leaves. Generally, 80% of the tetraacetaldehyde powder is used to prepare 500 times liquid, and then spray all over the field for control. However, it should be noted that the effect of the spray method may not be as ideal as that of the spray method.

On the one hand, because of the low utilization rate of chemicals caused by spray, the upper leaves prevent chemicals from reaching the snail activity area; On the other hand, snails cannot directly come into contact with pesticides, so incomplete death may occur. If the method of spray is used, it is suggested that where there are many snails, the drug should be used more heavily to ensure the effect.

(3) Chong Shi Fa
Chongshi method is a relatively novel pesticide application method suitable for controlling snails in dense leafy vegetable fields.

In actual agricultural production, the use of flushing method to control snails can last for more than a month, and the effect is very ideal. Generally, 80% formaldehyde wettable powder is used for application, and it is recommended to use 150-200 grams per acre of land. The advantage of the flushing method is that it can distribute the medicine more evenly in the field, improve the utilization rate and control effect of the medicine. But the disadvantage is that the cost is relatively high, requiring a large amount of medication and manpower to be invested.

Metaldehyde powder, as an efficient and low toxicity snail killing agent, plays an important role in agricultural pest control.

Its wide insecticidal range, good efficacy, long shelf life, high high-temperature activity, and low toxicity make it an ideal pesticide for controlling soft bodied pests such as snails, slugs, snails, and snails. However, when using formaldehyde, attention should also be paid to personal protection, environmental impact, drug mixing and resistance issues, safety intervals and frequency of use, as well as drug quality selection. Through scientific and rational application, the number of agricultural pests can be effectively controlled, ensuring crop yield and quality, and promoting sustainable development of agriculture.