A pesticide It is a combination of substances used to scare away or eliminate the pests . This concept (plague), meanwhile, refers to those organisms that appear suddenly and in large quantities, generating different damages to people, crops, etc.
The purpose of pesticides, therefore, is to prevent the spread of living things that are constituted as pests. It's not just about fighting insects or mushrooms , but may also be intended for the elimination of plants or other organisms that come into this consideration.
Pesticide development was essential for the growth of the farming . Thanks to their effectiveness and low cost, they allowed from the 1980s protect crops from almost any type threat biotic . However, in the long term, it was shown that the indiscriminate use of pesticides affects the environment and even modifies pests, making them more resistant.
It is important to note that pesticides can be poisons or other toxic substances, capable of even affecting the human being . That is why they must be used responsibly and the authorities must control what are the components of each pesticide that is available in the market.
Despite these risks and side effects, pesticides can be effective in eliminating insects or rodents that transmit diseases to people, to combat species that feed on plants or fruits grown for human consumption, or to separate fungi capable of affecting a construction.
The overcrowding and excessive use of synthetic pesticides, as opposed to natural, which can be prepared at home, has brought negative consequences for agricultural production, such as the imbalance of certain ecosystems. Below is the classification of this type of pesticide (of which there are more than 500 different products) according to its composition chemistry:
To this class of pesticide belong gamexane, dieldrin, octachlor, heptachlor, DDT and aldrin. It has fat soluble molecules and was created and disseminated since 1945, after World War II. Its worst disadvantage is that its molecules are very stable and can last for a long time. In addition, it is able to enter the trophic chains through the intake of a food on which it has been sprayed; Mammals can cause problems such as liver poisoning. In some countries, among which is Argentina, its use is prohibited by law .
Two pesticides of this type are monocrotophos and parathion. These are substances with a considerable level of toxicity, even when used in low doses. Although its action lasts much less than that of the chlorinated ones, contact with the skin should be avoided by all means, since they can cause damage Very serious in people of all ages. Despite being banned in many countries, the fact that it is a very economical type of pesticide makes it still allowed in certain parts of the world.
Carbofuran and aldicarb are two pesticides that belong to this class and their effect resembles that of phosphors. Within the long list of substances that may be present in a carbamate pesticide, some are highly toxic, but also have others that do not pose great dangers to our Health .
A group of pesticides that includes deltamethrin and cypermethrin, among others, and which aims to mimic the action of the substance known as pyrethrin, which is extracted from chrysanthemums and used as a natural pesticide; the problem is that your molecule It is very unstable and falls apart very easily. To counteract this inconvenience, scientists combine it with bromine or chlorine.