Pesticides are substances that are meant for attracting and destroying any pest. The most common use of pesticides is a s plant protection products, which protect plants from damaging influences such as weeds, fungi, or insects. Broad spectrum pesticides are pesticides that are designed to kill a wide variety of organism. Used when many different species of organisms are causing harm or when specific organism causing harm is unknown.
Ld50 is the dosage of a chemical substance that kills half the tested population.
Lc50 is the concentration of a chemical substance that kills half the tested population.
These values are expressed in Milligrams/kilogram
A substance that is considered highly toxic it would need to be around 43 mg/kg
Since many pesticides runoff into the water due to spraying and or crop runoff, these values can also represent aquatic animal and bodies of water.
Pesticides contaminate soil, water, and other vegetation, they also kill insects and weeds. Pesticides are toxic to the host of other organisms including birds, fish, beneficial insects, and non target plants. Pesticides evaporate out of the soil and travel in the atmosphere toward cooler areas. Condensing out again when the temperature drops. Process known as the grasshopper effect can carry them thousands of kilometers in matter of days.
Wind can carry pesticides away to a different location, only 90 percent of pesticides reach the ground, the others will be carried away. Animals can carry pesticides through the plants that they have ingested and disperse their waste in a different location
Agricultural chemical companies are now agreed to use substantial resources to assess the environmental fate of compounds. Screening of new compounds includes risk assessment of both ground and surface water contamination. Point source contamination often causes the greatest harm especially to waterways (entry of pesticides to water courses/groundwater following spillage of concentrate).
Pest Resistance occurs when a pest population are exposed to a pesticide. Even though most of the insects are killed, some survive. Genetic mutations cause the insect to be resistant. The offspring of these survivors carry the genes of the parents, and almost always inherit the ability to be resistant to the pesticides.The more times a population is exposed to a pesticide, the more quickly they will develop a resistance to it. This is negative because then the pests that are harming your crops are getting harder to kill. Farmers will then have more crops being consumed by animals because they are no longer dying from the pesticides.
Pesticide laws and regulation have been put in order to reduce pesticides to decrease the amount of super bugs are being created (resistant insects) EPA is given the authority to regulate pesticides. Canada has followed the rules and regulations given by the EPA, and have decreased the amount of pesticides being used.
Farmers have now started to rotate crops to decrease weeds and insects while also increasing soil and decreasing the amount of soil being lost. This is a very beneficial alternative.
Ld50 is the dosage of a chemical substance that kills half the tested population.
Lc50 is the concentration of a chemical substance that kills half the tested population.
These values are expressed in Milligrams/kilogram
A substance that is considered highly toxic it would need to be around 43 mg/kg
Since many pesticides runoff into the water due to spraying and or crop runoff, these values can also represent aquatic animal and bodies of water.
Pesticides contaminate soil, water, and other vegetation, they also kill insects and weeds. Pesticides are toxic to the host of other organisms including birds, fish, beneficial insects, and non target plants. Pesticides evaporate out of the soil and travel in the atmosphere toward cooler areas. Condensing out again when the temperature drops. Process known as the grasshopper effect can carry them thousands of kilometers in matter of days.
Wind can carry pesticides away to a different location, only 90 percent of pesticides reach the ground, the others will be carried away. Animals can carry pesticides through the plants that they have ingested and disperse their waste in a different location
Agricultural chemical companies are now agreed to use substantial resources to assess the environmental fate of compounds. Screening of new compounds includes risk assessment of both ground and surface water contamination. Point source contamination often causes the greatest harm especially to waterways (entry of pesticides to water courses/groundwater following spillage of concentrate).
Pest Resistance occurs when a pest population are exposed to a pesticide. Even though most of the insects are killed, some survive. Genetic mutations cause the insect to be resistant. The offspring of these survivors carry the genes of the parents, and almost always inherit the ability to be resistant to the pesticides.The more times a population is exposed to a pesticide, the more quickly they will develop a resistance to it. This is negative because then the pests that are harming your crops are getting harder to kill. Farmers will then have more crops being consumed by animals because they are no longer dying from the pesticides.
Pesticide laws and regulation have been put in order to reduce pesticides to decrease the amount of super bugs are being created (resistant insects) EPA is given the authority to regulate pesticides. Canada has followed the rules and regulations given by the EPA, and have decreased the amount of pesticides being used.
Farmers have now started to rotate crops to decrease weeds and insects while also increasing soil and decreasing the amount of soil being lost. This is a very beneficial alternative.