Herbicides Definition and Classification

Herbicides Definition and Classification - Herbicides are a kind of material of toxic compounds that serve to eradicate weeds or plant pests we are familiar with the term weed. Did you know that this herbicide is actually derived from organic chemistry and inorganic chemical compounds, but it can also be derived from the extraction of metabolites of an organism. This herbicide contains toxic to weeds or plant pests other plants if applied in the right way will inhibit weed growth and eradicate plant pests or weeds.

The function of this herbicide is to turn off the growth of weeds that grow around the plant. So dose herbicide use must be in accordance edngan type of plant and the type of content of the herbicide. Normally farmers would use this herbicide in time for planting crops, so they will spray the land to be used for growing crops in order to avoid weeds. In addition when the plants have started large, farmers would be spraying herbicides second phase, because usually weeds would grow again and would interfere with plant growth, if not immediately eradicated. For the types of herbicides used by farmers have very many and diverse. Well on this occasion-farm basis shall distribute the information to you.

For the type and brand of herbicide in the market is very much at all, such as; Roundup, gramaxon, clanup, gramaquat, paratop, and others. The function is the same, namely to prevent and eradicate the weed growth. Classification of these herbicides are also many kinds. Here are a few classifications of herbicide are frequently encountered in the market.

Classification and Types of Herbicides

These herbicides divided into several types based on the classification and their uses.

A. Types of herbicide based on differences in the degree of response of plants, divided into two types of herbicides, namely:

1. Selective Herbicides

As for the definition of Selective Herbicides are toxic herbicide that works only for certain plants. So at a certain plant, it will be more toxic herbicides when compared to other plants. Examples of this are Ametrin herbicide, diuron, oksifluorfen, clomazone and karfentrazon.

2. Herbicides Nonselective

While understanding Nonselective Herbicides are toxic herbicide that works for all kinds of plant pests. So this does not restrict the use of herbicides in plants such as the selective herbicide. As an example of selective herbicides include glyphosate and paraquat.

B. Types of herbicide based on the type of herbicide translocation inside the plant, can be divided into several types of herbicides, such as:

1. Herbicides Contacts (not translocated)

Contact herbicide is a herbicide which controls weeds by killing weeds parts directly affected by the herbicide. As for the nature of this herbicide is not discharged in the body of the weed or not translocated. So if many organs of the weed is exposed to this herbicide, the better. As an example of a contact herbicide that is selective, among others; oksifluorfen, oksadiazon and propanol, whereas other types are not selective contact herbicide, such as paraquat and glufosinate.

2. Systemic herbicides (translocated)

While understanding of Systemic herbicides are herbicides that are drawn from the site of first contact with the herbicide to the other part. This type of systematic herbicide can be used through the canopy and through direct land. As examples of herbicides that flowed through the canopy like; herbicide glyphosate, sulfosat and esters. While examples of herbicides that flowed through the land, namely ametrin herbicide, atrazine, diuron Metribuzin well.

C. Types of herbicide based on media or track the application, can be divided into two, namely:

1. Foliar Applications

Applications Foliar herbicides are applied through the canopy of leaves or weeds. See definition of this type herbicide, it is clear this herbicide to work when the weeds have grown. As an example of this type herbicides, among others; glyphosate, paraquat, glufusinat and propanol.

2. Soil Application

While Soil Application is a herbicide that is applied through the soil directly, use can be by spraying on the ground or you can also mix with the soil.

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