Atrazine Pesticide

This analysis of case studies from Los Alamos National Laboratory, and the case study to predict the effects of pesticides on aquatic systems and the waterfowl that uses them. Comparing the two processes of these case studies, along with analysis of the assessments. Describing the case study on the effects of pesticides in aquatic ecosystem, the risk assessment correlated to observed field studies and evaluate the importance of this type of correlation in general for all risk assessment efforts. Breaking down the ecological and social

Within the last ten years, the lack of awareness and false guidelines about the toxicity of pesticides has contributed to many tragic events. In 1988, Karen James, a Michigan postal worker, was walking past one of ChemLawn’s "fertilizer" trucks when a hose ruptured and she was drenched with chemicals. She was told by the ChemLawn employee not to worry because only fertilizers were in the spray and she would be fine. However, soon after she became seriously ill, with symptoms that include diarrhea, vomiting, and fatigue. When her doctor called ChemLawn to find out what chemicals she was exposed to, he was told that they do not use chemicals. But later tests on Karen revealed high levels of Dursban, a toxic pesticide, which forced ChemLawn to admit that they had been lying (Dieglman, 1996).

In order for a pesticide to be approved for use it needs to pass a few tests. The government examines the ingredients to ensure they are within safe boundaries, they also examine which crops and where it would be applied, how much you need to use for it to be effective and how often it needs to be used and also how it must be stored and how it can be disposed of (United states environmental protection agency 2016). With all of these regulations in place, it is extremely rare if not impossible for an unsafe products to pass through

14. "ATRAZINE REMEDIATION IN THE LAKE LAVON WATERSHED of GRAYSON COUNTY, TEXAS," Texas State Soil and Water Conservation Board, http://www.tsswcb.texas.gov/files/contentimages/01-07-FR-ATRGRAYSON-00-00-00.pdf.

My group did Atrazine and I came to quickly discover that it wasn’t just an herbicide farmer’s used. There was so much more to the story and it was more than a controversial topic, it involved a major feud between two sides. The company Syngenta, who primarily produces atrazine, and a now well-known scientist, Dr. Hayes. With Syngenta being the primary producer of the product it’s a no brainer that they would suffer if it were to be taken off the market. Dr. Hayes has published research of his own that shows that if the chemical gets into our drinking water it can have negative affects on amphibians. There are also speculations that it might affect humans as well. Dr. Hayes actually did research for the company on the product, but when they wouldn’t let him produce what he found he cut ties with the company and had others help in publish what he had found. This spiked the feud, or what I like to call war, between the two. For the presentation we had to remain neutral and leave out our opinions and I found this hard to do because I was so strongly against the usage of the product from doing research. In this paper I will go into detail about my stance on the topic, why I have taken this side, and why this is such a controversy.

Atrazine is an herbicide that does not occur naturally, can be applied before and after planting to control broadleaf and grassy weeds. Atrazine is part of the triazine chemical class, it is mostly used for agriculture. Farmers value atrazine for its effective use against some of the toughest weeds in corn like lambsquarters, morningglory, pigweed, and foxtails that make it the most popular herbicide in pre-mix combination products. Atrazine is an odorless, white powder that is not very volatile, reactive, or flammable, and that will dissolve in water. Atrazine is used to kill weeds, mostly on farms, but also been used on highway and golf courses. The EPA now controls how atrazine can be used and implemented, only trained people are allowed

It is also shown that pesticides are partly responsible for the rising cancer rates and birth defects among children (“Pesticides”).

I selected resources from a government agency, one resources from an academic and government collaboration, and one peer reviewed article on the effects of glyphosate. The Environmental Protection Agency (EPA) is government organization established to protect humans and the environment and has extensive research on pesticides. I found a unique resource in the National Pesticide Information Center, which is a collaborative effort between the Oregon State University and the EPA with the goal of providing scientific-based information on pesticides. The article on the effects of glyphosate provided information that was used to compare to the claims made by one of the largest makers of glyphosate products, Monsanto.

Atrazine is a herbicide used in agricultural areas, specifically on corn, sugarcane, and sorghum. As well as on yards and golf courses, the total amount of atrazine used in the United States in 2016 was 70 million tons. ( Donley, 2016) According to Syngenta’s website, the company that sells atrazine, it has not been proven that atrazine is harmful to the environment, animals, or humans. Even though there are multiple studies that show the opposite. Similarly, the EPA is currently researching atrazine again, due to the contradictory results of other studies done. This paper will discuss the effects of atrazine on the environment, animals, and humans. As well as the benefits the pesticide has, and evaluate if the pros outweigh the cons.

ney bee sample was detected. Coumaphos, an organophosphate acaricide used against varroosis in the experimental hives, was detected in of the samples. However, this acaricide was unlikely to be responsible for honey bee mortality because its constantly low concentration during all the monitoring period, even before and after acute mortality episodes. as well as the neonicotinoid imidacloprid, were the most frequently detected agrochemicals. Almost of the samples had chlorpyrifos, dimethoate, and imidacloprid. Minimum concentrations for these three compounds were . Influence of these pesticides on acute honey bee mortality was demonstrated by

The last unit in the Principles of Biology II, taught by Professor Schneider-Paolantonio, focused on Ecology and the effects of human interference on the environment and its organisms. During recitation, we examined the effects of atrazine, a pesticide, on African clawed frog populations. Atrazine is the most commonly dispersed pesticide in the world, and contaminate ground and surface water that spreads through other habitats. Atrazine caused the genetically male frogs to become demasculinized and to mature as feminized adults. While their chromosomes (ZZ) stayed the same, their outward anatomy changed to a female’s. In the experiment, they found that the transformed frogs could mate with other males to produce offspring that are all genetically

The third article I found was, Atrazine exposure in public drinking water and preterm birth by Rinsky L. et al. this article looked at atrazine in drinking water and how that is related to preterm birth. The objective of the study is to look at exisiting data to see id there is a relationship that exists between the level of atrazine in drinking water and preterm birth. The authors explain that atrazine is commonly apply to crops to protect it from weeds and is then transported to bodies of water by runoff from fields. The article explains that atrazine exposure can be dangerous to human health and it has access to people through their drinking water. The Environmental Protection Agency has a regulation on how much atrazine can be in the public

Atrazine inhibits the photosynthesis and the formation of ATP by blocking the electron transport. In photosystem 2, D1 and D2 proteins form a dimer to which all the electron-carrier cofactors are bound to. As one electron is excited and transferred from P680 to Pheophytin which rapidly transfers the electron to a protein-bound plastoquinone, QA. This QA will also rapidly give its electron to another plastoquinone QB. In this low-growing/dying scenario,electrons cannot be transferred to QB due to the presence of aatrex fertilizer which binds to the QB-binding niche of D1 protein. Therefore, it blocks the electron transport from QA to QB. As a result, there was no plastoquinol QBH2 (a fully reduced quinol form) formed in order to transfer the

One concern about pesticides and herbicide usage is the amount of residues left on the end product of crops sprayed with the chemicals, and their effects on human health. (Williamson, 2007, p. 184). However, these effects are closely tested and levels are strictly regulated to ensure there is no danger from possible pesticide residues. Since 1910, many rules, regulations, and agencies have been formed to monitor the safety of the pesticides and herbicides used in conventional farming. These chemicals must meet specific safety standards in order to be registered for use, and regulations on levels of each product safe for use are also put in place. (Tafel et al.,2007, p.184). All pesticides are rigorously examined to ensure they have no significant effects on human health, or the environment. The residues in the food chain are closely monitored, and regularly tested, to ensure they are below legal limits. In a recent survey of residues

Atrazine is a commonly used corn herbicide in the United States. The lineone website says: