Commonly used Auxiliaries include Surfactants, Spreading Penetrants, Defoamers

Feb 10, 2022

my country's herbicide industry has grown from scratch, from small to large, and has gradually developed, and has now formed a complete industrial system. In more than 60 years, my country's herbicide industry has gone through a long process from quotation to introduction, from imitation to creation. According to statistics, since the implementation of pesticide registration in my country in 1982, nearly 200 herbicide varieties (active ingredients) have been registered by the Ministry of Agriculture, more than 300 mixture combinations, and more than 1,500 original drugs and preparation products. According to the scope of poisoning, it can be divided into two categories: selective herbicides and biocidal herbicides. Killing herbicides include glyphosate (series), glufosinate, glufosinate-ammonium, bialaphos, paraquat, diquat, metsulfuron, sodium pentachlorophenate, etc., although the number of varieties is small, but Production and sales are very large. For example, glyphosate is the world's largest herbicide.

In recent years, the high frequency and large-scale use of herbicides has brought convenience to crop production, and it has also been accompanied by the problem of weed resistance. According to statistics, there are more than 200 weeds in the world that are resistant to herbicides. The reason why the problem of weed resistance has become more serious is that a single selective herbicide or different herbicides with the same mechanism of action have been continuously used in the same area for many years. Sensitive individuals in the weed population are constantly killed, and the resistance and adaptability are strong. Resistant individuals are retained and continue to produce seeds, and the number of resistant individuals in the population continues to increase. In this way, drug-resistant biotypes in the population gradually become the mainstay year after year. When the resistance of weeds is increased, the amount of pesticides has to be increased in order to ensure the effectiveness of the drugs, which increases the cost of pesticides for farmers, and also increases environmental pollution and affects the safety of crops.

The results of a large number of herbicides applied in the field show that many herbicide products are currently ineffective. After spraying in the field, more than 30-40% of the pesticides cannot perform their due role, and the ineffective pesticides are lost and volatilized, which will affect the air, soil, and water quality. , And even the entire ecological environment causes pollution. In response to this situation, the main method currently adopted is to add additives.

Commonly used auxiliaries include surfactants, spreading penetrants, defoamers and water quality regulators, etc. Herbicide auxiliaries generally do not have herbicidal activity, but can disperse, adhere, spread, deposit, penetrate, and conduct droplets. And other links play an important role to promote higher activity of herbicides.

Sugar alcohol is a polyhydroxy compound and the initial product of photosynthesis. It is a substance extracted naturally from the phloem of the plant. It mainly includes mannitol, sorbitol, xylitol, etc. It is a good chelating agent and can be combined with a variety of substances. Form a stable complex. Sugar alcohol complex can be combined with surfactants, penetrants and other auxiliary agents, and can easily penetrate the stratum corneum of the leaves into the inside of the leaves. Since sugar alcohol is naturally extracted from the phloem sap, after entering the inside of the leaf, it can carry nutrients into the phloem smoothly for nutrient transportation.

Technical realization elements:
The purpose of the present invention is to provide a herbicide synergist, which improves the activity of the herbicide and reduces the dosage of the herbicide, thereby reducing environmental pollution and slowing down the resistance of weeds to the herbicide.In order to solve the above technical problems, the herbicide synergist of the present invention is prepared by processing surfactants, sugar alcohols, spreading penetrants, water quality regulators, defoamers and solvents.The weight percentages of each component mentioned above are: surface active agent 5 to 35%, sugar alcohol 5 to 25%, spreading penetrating agent 5 to 15%, water quality regulator 5 to 20%, defoaming agent 0.2 to 0.8%, The solvent makes up 100%.Preferably, the weight percentages of each component are: 20 to 35% of surfactant, 15 to 20% of sugar alcohol, 10 to 15% of spreading penetrant, 10 to 15% of water quality regulator, 0.5 to 0.8% of defoamer, and solvent supplement 100%.The surfactant is one or any combination of alkyl polyglycoside, alkyl ether citrate, quaternary ammonium glucoside, methylated polyoxyethylene fatty acid, and esterified polyoxyethylene glycerin.The sugar alcohol is one or any combination of sorbitol, mannitol, erythritol, maltitol, lactitol, and xylitol.The spreading penetrant is one or any combination of organic silicon, glycerol, tridecyl ester, and sodium alkylbenzene sulfonate.The water quality regulator is one or any combination of ammonium sulfate, ammonium nitrate, ammonium urate, citric acid, and EDTA.The defoaming agent is one or any combination of organosilicon defoamers, polyether defoamers, and polyether modified silicone defoamers.