생물 Biology

진보통일꿈 2020. 6. 17. 19:09

* Pesticide, Insecticide, Fungicide, Herbicide,

 

Pest ;; 해충, 유해 동물,

Insect ;; 곤충

 

Pesticide ;; 해충 살충제,

Insecticide = 곤충 살충제,

Fungicide = 살진균제, 곰팡이 방지약,

Herbicide = 제초제

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Pesticide ;; substances that are meant to control pests, including weeds. The term pesticide includes all of the following: herbicide, insecticides (which may include insect growth regulators, termiticides, etc.) nematicide, molluscicide, piscicide, avicide, rodenticide, bactericide, insect repellent, animal repellent, antimicrobial, and fungicide. The most common of these are herbicides which account for approximately 80% of all pesticide use. Most pesticides are intended to serve as plant protection products (also known as crop protection products), which in general, protect plants from weeds, fungi, or insects.

 

In general, a pesticide is a chemical or biological agent (such as a virus, bacterium, or fungus) that deters, incapacitates, kills, or otherwise discourages pests. Target pests can include insects, plant pathogens, weeds, molluscs, birds, mammals, fish, nematodes (roundworms), and microbes that destroy property, cause nuisance, or spread disease, or are disease vectors. Along with these benefits, pesticides also have drawbacks, such as potential toxicity to humans and other species.

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Insecticide = Insecticide is a pesticide used against insects, Insecticides are a type of pesticide that is used to specifically target and kill insects.

Some insecticides include snail bait, ant killer, and wasp killer. Herbicidesare used to kill undesirable plants or “weeds”.

 

Insecticide ; substances used to kill insects. They include ovicides[(해충의 알을 죽이는) 살란제] and larvicides[유충을 죽이는 약제, 살충제] used against insect eggs and larvae, respectively. Insecticides are used in agriculture, medicine, industry and by consumers.

Insecticides can be classified into two major groups:

systemic insecticides, which have residual or long term activity; and

contact insecticides, which have no residual activity.

 

Furthermore, one can distinguish three types of insecticide.

1. Natural insecticides, such as nicotine, pyrethrum and neem extracts, made by plants as defenses against insects.

2. Inorganic insecticides, which are metals.

3. Organic insecticides, which are organic chemical compounds, mostly working by contact.

 

The mode of action describes how the pesticide kills or inactivates a pest. It provides another way of classifying insecticides. Mode of action is important in understanding whether an insecticide will be toxic to unrelated species, such as fish, birds and mammals.

 

Insecticides may be repellent or non-repellent. Social insects such as ants cannot detect non-repellents and readily crawl through them. As they return to the nest they take insecticide with them and transfer it to their nestmates. Over time, this eliminates all of the ants including the queen. This is slower than some other methods, but usually completely eradicates the ant colony.Insecticides are distinct from non-insecticidal repellents, which repel but do not kill.

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Fungicide = a chemical substance used to kill fungus or prevent it from growing,

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Herbicide = Some herbicides will kill all the plants they touch, while others are designed to target one species.

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