Contact drop buffer:This type of drop buffer controls the drop based on direct contact with the drop. For example, in the case of plant herbicides, in order to eliminate weeds, a sufficient surface of weeds must be covered by the desired herbicide.

Systemic herbicides: This type of herbicides is absorbed through a part or part of the plant and then spreads to all parts of the plant and eventually causes the plant to die. In the case of systematic insecticides, it is absorbed through the plant's roots and then transferred to all its parts, thereby killing the insects that feed on the plant. Based on the type of chemical composition: this classification is based on the structure of the chemical compounds in the anti-inflammatory formulation. Based on this, the drops placed in the same group have similar instructions for first aid, cleaning and safe use. This category can include: organophosphate pesticides, carbamate pesticides, organochlorine pesticides, triazine pesticides, phenoxy pesticides. Classification based on the level of toxicity: based on the classification of the World Health Organization WHO, pesticides are classified into four groups based on the level of LD50, the level of pest risks

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