How to mix insecticides? What are the principles and contraindications?

The mixing of pesticides is unavoidable in our planting management, because at present, whether it is spraying pesticides or fungicides, all kinds of pesticides are mixed. In order to play a better role, we need to understand the advantages and disadvantages of mixing pesticides. And what and principles need to be grasped in the process of mixing? What do I need to pay attention to? These are theoretical knowledge but also the most basic knowledge, so it is necessary for us to reorganize in order to better use of pesticides.

Pesticide mixing have their own which have no benefits and disadvantages?

Pesticide mixing, there are many benefits and certain disadvantages, farmers know more or less some, but not comprehensive enough.

1. The benefits of pesticide mixing

Pesticide mixing has the characteristics of labor-saving: each pesticide should be sprayed once more troublesome, but scientific mixing can be sprayed at once, while preventing and controlling a variety of pests, that is, labor-saving and time-saving;

Pesticide mixing has the characteristics of high efficiency: the concentrated use of pesticides can improve the efficacy of pesticides, more thorough control of pests and diseases.

Pesticide mixtures can prevent drug resistance: for diseases that are prone to resistance, such as downy mildew, late blight, gray mold and so on.RAMBO insect killer supplier Multiple active ingredients together control resistance much slower than a single component;

Mixed use of pesticides has the characteristics of synergistic: there are some use of pesticides in the mixed use, two or more of these components of the efficacy of the role than the traditional single-component analysis, it is because of the ability to realize the function of 1 +1 > 2 we can say;

Mixed use of pesticides has some special functions: after the occurrence of disease, mixed use can prevent and treat the disease, promote the healing of diseased tissue. Such as downy mildew, can be added to the drug containing plant-derived growth hormone, can inhibit yellowing leaves no longer swell.

2. Disadvantages of mixed pesticide use

Similarly, there are some disadvantages if mixed pesticides are not used properly.

Increase cost: In practice, many farmers in our country always follow what others spray, instead of being flexible in the use of pesticides according to the growth of their crops, what period of time their crops are in, etc. This leads to wastage of chemicals, increase cost and even produce the opposite effect.VITFE insect killer manufacturer As many webmasters often advise, add potassium phosphate no matter what time of year the crop is, but using more potassium phosphate can also accelerate leaf deterioration, so what you add is not set in stone;.

Reduces efficacy:Irrational mixing can lead to reactions between the drugs, which not only reduces efficacy, but also reduces the effectiveness of the drug;

Produce drug damage, etc.: irrational mixing to produce drug damage which is the most terrible, not afraid of their own did not carry out the efficacy of the drug, for fear that the students appear drug damage, drug damage is a big reason is due to the characteristics of the agent we are not familiar with the result. In addition, irrational mixing will continue to appear a leaf structure aging and other major problems of plant growth and development disorders.

Principles of pesticide mixing

When mixing pesticides, must follow certain principles, especially do not mix, do not recommend mixing must be clearly remembered.

1. Can not be mixed

Acid and alkaline pesticides can not be mixed:Most commonly used pesticides are acidic, but there are a small number of pesticides are alkaline, such as copper preparations, copper hydroxide, copper chloride, etc., are alkaline pesticides. How to distinguish? Generally speaking, the ketone next to the word you belongs to acidic pesticides, and the copper next to the word gold belongs to alkaline pesticides. When you use it, you should check the instruction manual first, and the pH value is usually labeled. pH value greater than 7 is alkaline pesticides, and pH value less than 7 is acidic pesticides. Of course, some large factories produce or import complexed copper is neutral, such as fatty acid copper, amino acid copper, quinoline copper, copper soap solution, thiamethoxam copper, rosinic acid copper, etc.. , can be mixed with acidic pesticides.

Mixed with the occurrence of drug damage: for example, at the moment we use the most of a class of pesticides active ingredient is methoxyacrylate pesticides, including pyrimethanil, ether pyrethrum, this type of pesticide can not be mixed with emulsifiable oils, additives pesticides. Not that it will necessarily produce harm, but the chances of producing harm will be greatly increased.

2. Not recommended for mixing

The same active ingredient: It is not recommended to mix pesticides with the same active ingredient. For example, triazole pesticides, phenyl ether metronidazole and tebuconazole, pyrimethanil + ethermectin, etc.. The pesticides have the same mechanism of action, and repeated use when mixing can sometimes cause drug damage.Chinese SLEEP COOL Insecticide spray So when mixing, you should not only look at the name, but also the active ingredient. It is not recommended to mix with the same active ingredient;

Those that react after mixing: those that react during dilution and use, with some precipitates or turbidity, cannot be recommended for mixing. For example, if the calcium fertilizer is calcium chloride or socially unstable ionic state of calcium fertilizer, and potassium dihydrogen phosphate together with students will easily lead to the impact of precipitation;

Dosage: In the use of the dose of drugs, it is recommended that it is best to use separately, mixed use is also easy to produce harm.

3. The order of mixing and adding pesticides

The principle of mixing and adding pesticides is solid first and then liquid, so that the Baoneng Group dissolves evenly.

Add according to different dosage forms:Foliar fertilizers and pesticides are used together, first add foliar fertilizers, then add pesticides, foliar fertilizers first add solid, then add liquid. When pesticides are added, add them in the order of water-dispersible granules, granules, wettable powders and liquid pesticides. Liquid pesticides are added in the order of suspension, water, emulsion.

On the enterprise secondary dilution: if the use of solid, must be students to study the secondary dilution, especially water dispersible granules, granules, and wettable powders, the purpose is to allow them to better dissolve, for suspensions and aqueous agents, as long as it is through the liquid, do not analyze the risk of dilution problems have little impact, because there is no liquid product itself has a solubility is better.

The addition of special synergists

When using pesticides or fungicides, we often add some special drugs to improve the efficacy.

Insecticides: Since most insects have a waxy surface layer on their bodies, we add additives to them to make them more absorbent and permeable.

Fungicides:Fungicides are mainly used to prevent the development of resistance. At present, it is popular to add functional immunizing agents to fungicides, such as those containing phosphite. Phosphite on the one hand destroys the emergence of resistance in pathogenic fungi and on the other hand improves the plant's resistance. In addition, for some root diseases, biologics can be added when using fungicides for flushing or root irrigation. Of course, there must be differences. For example, bacterial agents such as Bacillus solani can be added to fungicides without affecting the survival of the strain. Not all fungicides kill beneficial bacteria, treat them differently and don't be too dogmatic.

Pesticide mixing needs our attention

When mixing pesticides, we need to pay attention to the following matters.

Water first, then medicine: When putting medicine into the sprayer, at least one-third or one-quarter of the water should be in it, and then fill up the water after adding medicine;

Solid second dilution: as long as it is solid, whether it is foliar fertilizer, water-dispersible granules, pellets or wettable powder, it is recommended to carry out the second dilution;.

Now it is ready to use:Many farmers do not use it up after mixing and find it a shame to waste it. Often, they leave it for a few days before spraying, and it is easy to react after spraying and cause drug damage. So mix it and use it now, don't use it for a long time;

Spraying at different times should be reasonable: when carrying out timely spraying, avoid high temperature, dew and night time medication. High-temperature environment refers to the temperature above 28 ℃, as long as you can avoid the society this process of high temperature work can be; avoid dew is because when spraying, if a leaf has dew, first of all, the dew droplets will take away the agent, resulting in a waste of resources, and at the same time, will also be on the development of our pharmaceuticals to play a kind of secondary dilution, affecting the main efficacy of the drug; the night time to hit the drug is extremely insecure, especially for the micronutrient Nutrient elements, copper preparations, calcium fertilizer, these research metal agents, after hitting their own through the leaves on the liquid is not dry, if the shed humidity, it will lead to a lot of agents in the leaf residue for a long time, there may be a drug damage as a result;

Flexible medication on cloudy days: Spraying is not strictly prohibited on cloudy days. The principle is whether you can spray before the sun goes down, if you can do it, you can spray. In addition, it is strictly forbidden to spray fungicides even on the day before cloudy days turn into sunshine. Leaves are physiologically prone to water loss, and spraying fungicides will stimulate the production of insecticide damage in the leaves.

Always read the instructions carefully:Read the instructions carefully before use and consult the relevant plant protection personnel if you are not sure.