Types Of Insecticides And Pesticides Pdf

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There are many different types of pesticides, each is meant to be effective against specific pests. The term " -cide " comes from the Latin word " to kill.

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Pesticide Descriptions. Chemical Name. This chemical does not leach and is unlikely to contaminate water bodies. It is found to exhibit very low ecological risks, to aquatic life, birds, and mammals. Carbendazim MBC.

Pesticides can be grouped according to the types of pests which they kill: Insecticides - insects Herbicides - plants Rodenticides - rodents rats and mice Bactericides - bacteria Fungicides - fungi Larvicides - larvae Fig. For example, they can be grouped according to the chemicals in them or to the method of application. Insecticides kill insects by getting inside their bodies where they then act as poison. There are three different ways insecticides can get into an insect body. In insects, the skin is called the cuticle. Insecticides of this kind are called contact poisons.

Conventional insecticides are among the most popular chemical control agents because they are readily available, rapid acting, and highly reliable. A single application may control several different pest species and usually forms a persistent residue that continues to kill insects for hours or even days after application. Overuse, misuse, and abuse of these chemicals have led to widespread criticism of chemical control and, in a few cases, resulted in long-term environmental consequences. More about Toxicity The effectiveness of an insecticide usually depends on when and where the pest encounters it. Other insecticides act as fumigants. Fumigants are most effective when they are used in an enclosed area such as a greenhouse, a warehouse, or a grain bin. Still other compounds must be ingested before they have an effect.

7 Types of pesticides and how they enter animals and plants

Jump to navigation. To use fewer pesticides, it is important that pesticides, when used, are effective at killing pests. Pests can become resistant to pesticides making the pesticide ineffective for management. Resistance is genetic in nature, and an insect or mite cannot become resistant or acquire resistance during its life that is, within one generation. Resistance is stimulated by widespread application of a pesticide but some individual pests survive and pass on genetic factors to the next generation.

Environmental impact of pesticides

Insecticide , any toxic substance that is used to kill insects. Such substances are used primarily to control pests that infest cultivated plants or to eliminate disease-carrying insects in specific areas. Insecticides can be classified in any of several ways, on the basis of their chemistry, their toxicological action, or their mode of penetration.

George W. David M. Whitacre V. Structural formulae shown in this chapter are reproduced with permission from Alan Wood's Compendium of Pesticide Common Names.

Pesticides can be grouped according to the types of pests which they kill: Insecticides - insects Herbicides - plants Rodenticides - rodents rats and mice Bactericides - bacteria Fungicides - fungi Larvicides - larvae Fig. For example, they can be grouped according to the chemicals in them or to the method of application. Insecticides kill insects by getting inside their bodies where they then act as poison.

Insecticide

Modes of penetration

Соединения долго не. Наконец раздались длинные гудки. Ну давай. Окажись дома. Через пять гудков он услышал ее голос. - Здравствуйте, Это Сьюзан Флетчер. Извините, меня нет дома, но если вы оставите свое сообщение… Беккер выслушал все до конца.

Лейтенант листал паспорт умершего. - Я бы предпочел, чтобы вы ни к чему не прикасались, - попросил. Ничего не трогайте. Ничего не читайте. - Энсей Танкадо… родился в январе… - Пожалуйста, - вежливо сказал Беккер.  - Положите на место. Офицер еще какое-то время разглядывал паспорт, потом положил его поверх вороха одежды.

 Около часа, говоришь? - хмуро спросил.  - А что ты скажешь о проверках пределов памяти, которые мы выполняли. Сьюзан пожала плечами. - Ну, если вы имеете в виду и диагностику, то времени уходило. - Насколько. Сьюзан не понимала, к чему клонит Стратмор.

Следопыт задерживается.

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