Root grass is difficult to eliminate and can be completely solved with herbicides.

Root grass is indeed a relatively difficult problem, may have a certain effect after just using herbicides, but after a period of time there will be a problem of weed comeback. This involves the choice of herbicide. Let me talk to you about herbicides.

To get rid of the root grass, you must first understand the type of herbicide. There are many types of herbicides, and there are many brands of herbicides sold on the market, so we must first understand this problem before we can do the right thing. There are many ways to classify herbicides, so here is a rough introduction.

1. Mode of action

Selective herbicides: As the name suggests, selective herbicides kill weeds without affecting crop growth. Most herbicides are selective herbicides. The more common ones are clover, bentazon, etc.

Destructive herbicide: Destructive is more severe, meaning that as long as it is exposed to plants, it doesn't matter whether you are a weed or not. Anyway, you will die if you encounter it. For example, paraquat, which has already withdrawn from Jianghu, belongs to this type.

2. Conductivity classification

Contact killing: This friend who uses herbicides should often hear about it, as long as you are exposed, this part will die. This means that the herbicide will only kill the part of the weed exposed to the pesticide, and may not cause complete death of the weed. Paraquat is more common.

Systemic herbicide: The characteristic of systemic herbicide is that after the pesticide is applied, the weed may not immediately see the effect, because the herbicide has to go through an absorption process, so that the herbicide effect slowly spreads to all parts of the weed, thus slowly dying. The most common type of herbicide is glyphosate.

3. Classification of use methods

Stem and leaf treatment: That is to say, this type of herbicide is mainly used by spraying the pesticide on the stem sap of the weed, and then transmitting the toxin to the root of the weed through the stem and leaf, so as to achieve the purpose of weeding. Herbs and glyphosate are both of this type.

Soil treatment: Soil treatment generally requires spraying herbicides to the surface, or mixing them directly into the soil, and transferring toxins from the roots of weeds to achieve the purpose of weeding. More common is acetochlor and so on.

In addition to the above three classification methods, there are other classification methods, which will not be repeated here. However, it can be seen from the above classification that systemic herbicides are more suitable for removing root grasses. For example, glyphosate, dimethyl tetrachloromethane, chlorfluroxypyr, dichloropyridine acid and so on are suitable for removing root weeds.

However, in the process of use, it is also necessary to pay attention to reasonable selection according to different crop types, and to strictly follow the concentration standards on the product description, do not change the concentration without authorization.

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