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Speaking of pesticides, it is a very familiar thing for us farmers, but have you discovered such a rule that more and more pesticides we use now are compound agents, especially pesticides, The three mainstream pesticides such as acaricides and fungicides
.
Why are pesticide compounds so popular now? Why don't pesticide manufacturers like to produce single doses? Before I talk about this, I will first talk about what is called a single agent and a compound of pesticides
.
Pesticide single agent refers to a pesticide produced by a pesticide manufacturer.
The effective ingredient marked in it is only a single ingredient, while a compound agent refers to a pesticide that contains two or more different ingredients.
A preparation made by mixing different kinds of pesticides together
.
Generally speaking, there should be no more than three types of active ingredients in a pesticide compound.
Except for seed coating agents, there should be no more than two types of active ingredients in other conventional pesticide compounds
.
In addition, the compounding agent produced by the manufacturer is not the same as mixing two single-agent pesticides by ourselves.
The difference between them is still very big
.
Compared with single agent, what are the advantages of pesticide compound? Why does it allow pesticide manufacturers to develop and produce so much? Advantages of pesticide compounding agent: Compared with single agent, compounding agent can significantly increase its control effect.
As we have just mentioned, there are many kinds of pesticide ingredients, but not every ingredient can be compounded.
Match
.
In addition, there is a big difference between the two-component pesticides that we mix daily and the factory-prepared ones.
When the two-component pesticides are compounded, the biggest difficulty lies in how to determine the difference between the two pesticides.
Matching ratio
.
Because of the different ratios, the final control effect will also vary greatly.
There is a professional term called "co-toxicity coefficient". .
If two different pesticides are mixed and used together, and then passed a series of toxicity compounding tests, if the final data obtained shows that the co-toxicity coefficient between them is greater than 100, it means that the two pesticides are used.
The compound has a synergistic effect; and if it is equal to 100, it means that the two pesticides have no synergistic effect but only an additive effect; then if it is less than 100, it means that the compound will have antagonism and decrease.
Effectively, it also means that it is not suitable for compounding between these two compounds
.
So, we ourselves barrel-mix the two single-agents and the two components that the manufacturer has compounded.
The biggest difference between them is the difference in the co-toxicity coefficient
.
For example, our commonly used pyraclostrobin and tebuconazole, the ratios produced by different manufacturers on the market are also very different, but after a large number of tests, it has been shown that when the ratio of pyraclostrobin and tebuconazole is 1:2 , The co-toxicity coefficient compounded between them is the highest among all the matching control groups, that is to say, the compounding agent with this ratio has the best effect
.
Then, for example, our commonly used azoxylate is the same
.
After testing, when the ratio of pyraclostrobin and Daisenlian is 1:11, the co-toxicity coefficient between them is the highest
.
Therefore, most of the oxazolone preparations produced by the manufacturers on the market are formulated with a combination of 5%+55%, which is the reason
.
Advantage 2: The control spectrum of the compound is wider than that of a single agent.
Take abamectin as an example.
It can control the adult mites and nymphs of red spiders, but it has no effect on the egg masses of red spiders.
Then if the compound is compounded with ethyl mites Azole or spirodiclofen can be effective for all forms of red spiders, so that adults and egg masses can be controlled together
.
Advantage 3: Compared with a single agent, the compound agent is less likely to produce drug resistance, and it can also achieve the complementary advantages of the two components.
Or take the pyraclostrobin we mentioned earlier as an example.
Pyraclostrobin is a protection Tebuconazole has a very good systemic therapeutic effect.
The combination of these two components can make the medicine have both protective and therapeutic effects
.
So whether it is used before or after the onset of the crop, it has a good control effect
.
Another example is pyraclostrobin, pyraclostrobin has good systemic properties, but the disadvantage is that the point of action is single, and it is easy to produce drug resistance after repeated use; while pyraclostrobin has only contact effect and no systemicity, but Its advantage is that it is not easy to develop drug resistance
.
As a result, as long as the pyraclostrobin and Daisenlian are compounded, the complementary advantages between the two components can be realized, so that the compounded drug has systemic properties and is not easy to produce resistance.
Medicinal properties
.
Advantage 4: The use cost of the compound agent is lower than that of two single-dose tank mixing.
For example, it is also abamectin and etoxazole, and the use cost of 400~600 kg of water of the manufacturer's compounded avermectin and etoxazole Most are about 25-30 yuan; while we bought two single doses of abamectin and etoxazole for barrel mixing, the cost of 400-600 kg of water is mostly between 30-35 yuan
.
This is because the compound can save a series of costs such as empty bottles, labels, additives, carton packaging and so on
.
Therefore, the manufacturer's production cost is lower, and the price is naturally cheaper
.
Advantage 5: The amount of compound used is less than that of a single agent, which is conducive to the realization of the national policy of pesticide reduction and efficiency enhancement.
It is more environmentally friendly.
Then take the azoles tebuconazole mentioned above as an example, generally 25% The use times of pyraclostrobin single dose on citrus is 2000 times, while the single dose of 43% tebuconazole is 2000～3000 times, but we are now using 10% pyraclostrobin and 20% After tebuconazole is compounded, its use multiple can also reach 2000-3000 times, so compared with their two respective single-dose tank mixing uses, the dosage is significantly reduced
.
Other reasons Actually, there is another reason why the current pesticide manufacturers are more and more interested in developing and producing compound formulations, and that is related to national policies
.
Everyone knows that the effect of the compound agent is usually better than that of the single agent, so the prevention and control of pests and diseases is more effective. .
In fact, before 2017, the pesticides produced by many manufacturers belonged to compound agents.
Even though it may be labeled as a single agent on the label, the drugs in it are likely to be compound agents.
Why? Because before 2017, the "Pesticide Management Regulations" system was not very complete, which led to a very chaotic pesticide production market at that time.
Many pesticide manufacturers illegally added hidden ingredients to their products.
This was already the industry at that time.
It's a tacit secret
.
Some manufacturers even arrogantly stated the hidden ingredients added in it directly on the label.
For example, like these two labels, the registered ingredient is 5% acetamiprid, but it also contains abamectin.
The other is the same.
The ingredient registered on the label is 20% carbofuran, but it also contains acetamiprid, avermectin and a certain synergist.
Effect aid
.
However, after 2018, the state issued the "New Pesticide Management Regulations", which happened to be a perfect system for the loopholes of various chaos in the past, and this allowed the chaos of pesticides to add hidden ingredients to be effectively controlled
.
Since then, most pesticide manufacturers have not dared to add hidden ingredients illegally, so to ensure the effectiveness of the drugs, they can only honestly register and produce the compound
.
Therefore, the reason why more and more manufacturers like to develop and produce compounding agents is because of the above reasons
.
As for us farmers, if we want to buy good pesticides, we must master some basic knowledge of pesticides and look for large manufacturers, instead of blindly choosing high-content pesticides and blindly thinking that the higher the content of pesticides.
The better the effect
.
.
Why are pesticide compounds so popular now? Why don't pesticide manufacturers like to produce single doses? Before I talk about this, I will first talk about what is called a single agent and a compound of pesticides
.
Pesticide single agent refers to a pesticide produced by a pesticide manufacturer.
The effective ingredient marked in it is only a single ingredient, while a compound agent refers to a pesticide that contains two or more different ingredients.
A preparation made by mixing different kinds of pesticides together
.
Generally speaking, there should be no more than three types of active ingredients in a pesticide compound.
Except for seed coating agents, there should be no more than two types of active ingredients in other conventional pesticide compounds
.
In addition, the compounding agent produced by the manufacturer is not the same as mixing two single-agent pesticides by ourselves.
The difference between them is still very big
.
Compared with single agent, what are the advantages of pesticide compound? Why does it allow pesticide manufacturers to develop and produce so much? Advantages of pesticide compounding agent: Compared with single agent, compounding agent can significantly increase its control effect.
As we have just mentioned, there are many kinds of pesticide ingredients, but not every ingredient can be compounded.
Match
.
In addition, there is a big difference between the two-component pesticides that we mix daily and the factory-prepared ones.
When the two-component pesticides are compounded, the biggest difficulty lies in how to determine the difference between the two pesticides.
Matching ratio
.
Because of the different ratios, the final control effect will also vary greatly.
There is a professional term called "co-toxicity coefficient". .
If two different pesticides are mixed and used together, and then passed a series of toxicity compounding tests, if the final data obtained shows that the co-toxicity coefficient between them is greater than 100, it means that the two pesticides are used.
The compound has a synergistic effect; and if it is equal to 100, it means that the two pesticides have no synergistic effect but only an additive effect; then if it is less than 100, it means that the compound will have antagonism and decrease.
Effectively, it also means that it is not suitable for compounding between these two compounds
.
So, we ourselves barrel-mix the two single-agents and the two components that the manufacturer has compounded.
The biggest difference between them is the difference in the co-toxicity coefficient
.
For example, our commonly used pyraclostrobin and tebuconazole, the ratios produced by different manufacturers on the market are also very different, but after a large number of tests, it has been shown that when the ratio of pyraclostrobin and tebuconazole is 1:2 , The co-toxicity coefficient compounded between them is the highest among all the matching control groups, that is to say, the compounding agent with this ratio has the best effect
.
Then, for example, our commonly used azoxylate is the same
.
After testing, when the ratio of pyraclostrobin and Daisenlian is 1:11, the co-toxicity coefficient between them is the highest
.
Therefore, most of the oxazolone preparations produced by the manufacturers on the market are formulated with a combination of 5%+55%, which is the reason
.
Advantage 2: The control spectrum of the compound is wider than that of a single agent.
Take abamectin as an example.
It can control the adult mites and nymphs of red spiders, but it has no effect on the egg masses of red spiders.
Then if the compound is compounded with ethyl mites Azole or spirodiclofen can be effective for all forms of red spiders, so that adults and egg masses can be controlled together
.
Advantage 3: Compared with a single agent, the compound agent is less likely to produce drug resistance, and it can also achieve the complementary advantages of the two components.
Or take the pyraclostrobin we mentioned earlier as an example.
Pyraclostrobin is a protection Tebuconazole has a very good systemic therapeutic effect.
The combination of these two components can make the medicine have both protective and therapeutic effects
.
So whether it is used before or after the onset of the crop, it has a good control effect
.
Another example is pyraclostrobin, pyraclostrobin has good systemic properties, but the disadvantage is that the point of action is single, and it is easy to produce drug resistance after repeated use; while pyraclostrobin has only contact effect and no systemicity, but Its advantage is that it is not easy to develop drug resistance
.
As a result, as long as the pyraclostrobin and Daisenlian are compounded, the complementary advantages between the two components can be realized, so that the compounded drug has systemic properties and is not easy to produce resistance.
Medicinal properties
.
Advantage 4: The use cost of the compound agent is lower than that of two single-dose tank mixing.
For example, it is also abamectin and etoxazole, and the use cost of 400~600 kg of water of the manufacturer's compounded avermectin and etoxazole Most are about 25-30 yuan; while we bought two single doses of abamectin and etoxazole for barrel mixing, the cost of 400-600 kg of water is mostly between 30-35 yuan
.
This is because the compound can save a series of costs such as empty bottles, labels, additives, carton packaging and so on
.
Therefore, the manufacturer's production cost is lower, and the price is naturally cheaper
.
Advantage 5: The amount of compound used is less than that of a single agent, which is conducive to the realization of the national policy of pesticide reduction and efficiency enhancement.
It is more environmentally friendly.
Then take the azoles tebuconazole mentioned above as an example, generally 25% The use times of pyraclostrobin single dose on citrus is 2000 times, while the single dose of 43% tebuconazole is 2000～3000 times, but we are now using 10% pyraclostrobin and 20% After tebuconazole is compounded, its use multiple can also reach 2000-3000 times, so compared with their two respective single-dose tank mixing uses, the dosage is significantly reduced
.
Other reasons Actually, there is another reason why the current pesticide manufacturers are more and more interested in developing and producing compound formulations, and that is related to national policies
.
Everyone knows that the effect of the compound agent is usually better than that of the single agent, so the prevention and control of pests and diseases is more effective. .
In fact, before 2017, the pesticides produced by many manufacturers belonged to compound agents.
Even though it may be labeled as a single agent on the label, the drugs in it are likely to be compound agents.
Why? Because before 2017, the "Pesticide Management Regulations" system was not very complete, which led to a very chaotic pesticide production market at that time.
Many pesticide manufacturers illegally added hidden ingredients to their products.
This was already the industry at that time.
It's a tacit secret
.
Some manufacturers even arrogantly stated the hidden ingredients added in it directly on the label.
For example, like these two labels, the registered ingredient is 5% acetamiprid, but it also contains abamectin.
The other is the same.
The ingredient registered on the label is 20% carbofuran, but it also contains acetamiprid, avermectin and a certain synergist.
Effect aid
.
However, after 2018, the state issued the "New Pesticide Management Regulations", which happened to be a perfect system for the loopholes of various chaos in the past, and this allowed the chaos of pesticides to add hidden ingredients to be effectively controlled
.
Since then, most pesticide manufacturers have not dared to add hidden ingredients illegally, so to ensure the effectiveness of the drugs, they can only honestly register and produce the compound
.
Therefore, the reason why more and more manufacturers like to develop and produce compounding agents is because of the above reasons
.
As for us farmers, if we want to buy good pesticides, we must master some basic knowledge of pesticides and look for large manufacturers, instead of blindly choosing high-content pesticides and blindly thinking that the higher the content of pesticides.
The better the effect
.
