What is the meaning of Pesticide? Concept and Definition of Pesticide

PESTICIDE - ITS DEFINITION AND CONCEPTS 

1. Concept Pesticide

Pesticides or pesticides may be of chemical synthesis, biological or natural products designed to kill, repel, attract, regulate or stop the growth of living organisms considered pests. 
pest in the definition include insects, weeds, birds, mammals , mollusks, fish, nematodes, and microbes that compete with humans for food, destroy property, spread disease or are a vector for these, or cause discomfort. Pesticides are not necessarily poisons, but can be toxic to humans or other animals. 
But according to the Stockholm Convention on Persistent Organic Pollutants, 9 of the 12 most dangerous and persistent organic compounds are pesticides. 
The term pesticide is more widely widespread than exact generic name: biocide (literally: life killer). The term pesticide suggests that pests can be distinguished from harmful organisms that pesticides will not kill him, and that pests are totally undesirable. 
During the 1980s, the massive application of pesticides was considered generally as a revolution agriculture. They were relatively inexpensive and highly effective. Its application became common practice as a preventive measure even without any visible attack. Since then, experience has shown that this method not only environmentally friendly, but ultimately it is also ineffective.Where pesticides are used indiscriminately, pest species have become resistant and difficult or impossible to control. In some cases resistance has created major vectors of diseases (eg malaria mosquitoes), or new agricultural pests have emerged. For example, all the mites were fostered by pesticides, because they were abundant before use. Based on this experience, specialists in crop protection have developed a more diversified and sustainable: integrated pest management.

2. Definition of pesticides

According to WHO, a pesticide or pesticide is any substance or mixture of substances, organic or inorganic in nature, which is intended for combating insects, mites, rodents and other undesirable species of plants and animals which are harmful to man or interfere in any other way in the production, processing, storage, transport or marketing of food, food production, agricultural products, wood and wood products or animal feedstuffs, also those that can be administered to animals for the control insects arachnids or other pests in or on their bodies. 
The term pesticide also includes the following types of substances: regulators of plant growth, defoliant, desiccant or agent for thinning fruit, agents for preventing the premature fall of fruit, and substances applied to crops before or after harvest to protect the commodity from deterioration during storage and transport. 
From the point of view of toxicology, it is important to note that in addition to pesticide formulations active include transporting substances, diluents as water or organic solvents, additives and impurities, which may have potential toxic by themselves. 
pesticide analysis can be divided into several areas: 
-Forensic 
-Diagnosis emergency 
-control exposed and unexposed populations. 
, Environmental Pollution. 
If the pesticide was cause of death, is in high concentration, as in acute intoxication. In the latter two areas dealing with samples with very low levels of pesticides (less than 0.1 ppm), speaks of "waste" of pesticides. Of these study organochlorine insecticides, organophosphates and carbamates, being currently the most widely used and very characteristic toxic effects. 
CHEMICAL AND PHYSICAL PROPERTIES 
These properties are the determinants of environmental kinetics. The air, water, soil and food retain much of pesticides and they will come to living beings. 
constitutes a current problem their persistence in the environment, its concentration and transformation in living organisms. 
ETIOLOGY 
Accidental poisonings are generally of occupational origin, affecting the workers employed in the preparation of insecticides or rural laborers during or immediately after application to crops. 
Food poisoning due to the consumption of food treated with pesticides improperly. Accidental poisonings are generally due to confusion, reckless driving and failure to monitor children. 
suicidal poisonings and criminals have become more common due to its high toxicity and easy acquisition.

3. Meaning of Plaguicida

A pesticide is a combination of substances used to deter or eliminate pests. This concept (plague), meanwhile, refers to those organisms that appear suddenly and in large numbers, causing damage to different people, cultures, etc.. 
The purpose of the plagues, therefore, is to prevent the spread of living beings that are pests. It is not just to fight insects or fungi, but also may be intended for the removal of plants or other organisms entering this consideration. 
pesticide development was essential for the growth of agriculture. Due to its effectiveness and low cost, enabled from the 1980s to protect crops from almost any threat of biotic type. However, in the long run, it was shown that the indiscriminate use of pesticides affect the environment and even modified to pests, making them more resistant. 
Importantly pesticides can be poisons or other toxic substances, even able to affect the human.So they must be used responsibly and authorities must control which components of each pesticide that is available in the market. 
Notwithstanding these risks and side effects, pesticides can be effective in eliminating insects or rodents that transmit disease to people, to fight the species that feed on plants and fruits grown for human consumption, or to avert the fungi can affect construction.