Mancozeb has been used for a long time and is still in use today. But many people only know that mancozeb is easy to use, but they don't really know about mancozeb. Let's introduce Xiaosen Manganese Zinc.
Nowadays, people who have basically contacted or sold it know that mancozeb is divided into two types: complex and non-complex, one safety and long-lasting period, another safety and The period of validity is not good. If I say that this statement is not necessarily correct, do you believe it?
First of all, to distinguish between the complex state and the non-complexed state of mancozeb in the end is not the same!
The biggest difference between them is a process of enthalpy, which combines manganese ions with zinc ions. This is very demanding. The worst is probably semi-complex or 80% complex. It is the real full complexity that is done well.
Why do you want to combine these two ions? Because it is not complex, it is very easy to produce phytotoxicity, very unstable, and the problem is basically on the manganese ion. When the complexation is completed, it is equal to the knife package. The scabbard will not hurt people through the scabbard.
At present, there are very few manufacturers that can truly achieve full complexion in China. Many of them are marked with full complexation, not necessarily 100% complex, some are 80% complex, some even reach less than 50%, and the possibility of phytotoxicity Sex can be imagined.
Complexation and non-complexation are difficult to distinguish from the appearance, even if it is not tested at the time of random inspection, as long as the content is sufficient. Therefore, the identification can only be considered from the aspects of efficacy and duration, or the physiology, of course, the price can also be referred to. After all, after the thermal complexation process and the failure, the cost is much worse.
The non-complexed mancozeb is firstly not resistant to storage. It may not be available for two years. The efficacy is greatly reduced when used. Secondly, it is particularly sensitive to light and heat, acid and alkali. Alkali will be partially decomposed, and it will be dried when it is stored. When it is hot, it will decompose. When it hits the crop, it will decompose when the sun is dried, and the manganese ions will be decomposed. This will cause the phytotoxicity to occur, decompose, and fail. It’s gone.
The fully complexed mancozeb is resistant to storage, is not easy to decompose, has a long-lasting effect, and is safe for crops. Of course, there are also disadvantages, that is, manganese ions and manganese ions. Manganese ion is the main factor that can cause bactericidal action. After thermal complexation, there is no free manganese ion. While reducing the risk of phytotoxicity, the bactericidal activity is greatly reduced, and it tends to be more protective. .
As for what is said does not necessarily mean what is the bottom product, the unbeatable low price, what does it mean? Maybe it is not the mancozeb, but the mansen manganese and the Daisen zinc What comes out, the protection is not good, the safety is very poor, not to mention 100% remedy, basically the risk of phytotoxicity is greater than the non-complexed mancozeb. In terms of appearance discrimination, the color is relatively dark, the impurities are more, and it is easier to photolysis or deliquescence.
Finally, the spots caused by mancozeb in the young fruit period will grow up with the expansion of the fruit and will not be eliminated. The harm of the inferior manganese zinc will not be reduced by the mixing of the regulator. It is also very difficult to see which mancozeb is from the outer packaging.
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