Effect of Lemongrass (Cymbopogon Citratus) and Pandan (Pandanus Amaryllifolius) Leaves’ Water Extracts in Reducing Wriggler’s Life Span

The LC50 of insecticides rotenone and pirimicarb were compared by testing blowfly, blowfly larva, woodlice and daphnia. Rotenone is a NADH dehydrogenase inhibitor causing death by oxidative stress however pirimicarb causes toxicity through acetylcholinesterase inhibition. It was found that rotenone had large toxic effects on daphnia, blowflies and woodlice but not maggots and pirimicarb had low toxic effects on all of the organisms tested. Due to the low percentage death caused by pirimicarb a LC50, however in rotenone a LC50 was performed for daphnia, woodlice and blowfly the LC50 for each organism was compared concluding

In the early 1940’s, a new technology emerged that was able to successfully combat crop-damaging and disease-carrying insects. A new age of synthetic chemical pesticides use arose. After their impressive success in fighting deadly insect-borne diseases during World War II, pesticides were used widely to combat insect pests for agriculture and public health. Few people challenged the benefits of the new scientific and technological products and many embraced pesticide use with enthusiasm. Despite its success, doubts about pesticide use began to appear a decade later in the 1950’s, when the government began a vigorous pesticide campaign across the country against insect pests. Scientists began reporting heavy losses of avian and

The banning of insecticide, a major pollutant and neurotoxin, has been up for debate for a significant period of time. However,

Carson clarifies that “the sprays, dust, and aerosols are now applied almost universally to farms, gardens, forests, and homes-nonselective chemicals that have the power to kill every insect, the “good” and the “bad”.” In contemporary world today many people use these mankind chemicals without understanding the effects of nature. For example, the reproduction of bees are dropping traumatically because of the pesticides effects on the insects. According to CNN “How Pesticides are killing the bees “Recent data published in science, Nature and other un journals show that bees are dying from some pesticides that are found in our food supply.” The damaged the chemicals are doing to the bees have worries many scientists. The New York Times wrote, pesticide linked to honeybee deaths, “a group of pesticide believed to contribute to mass deaths of honeybees.” Another example of the harmful chemicals affecting the good insects are by destroying favorable insects such as lady bugs and butterflies, which are another great alternative way to pollinate flower. These beneficial insects are very important for human wellbeing; therefore, we should minimize the use of

that are the cause of malaria. It helps kill the insects that can be dangerous to crops that people

Although there are various pest control products you can use, they are harmful to your health.

Aerial spraying, overspray, and drift threaten food crops not modified to withstand the pesticides. Soil is bare and exposed seven months of the year, resulting in tremendous soil erosion. It isn’t our soil to lose. Future generations will pay the price” (McCulloch). Farms that operate on a monocultural based scale have made it easy for specific insects to multiply abundantly. However, at the rate and to the extent that pesticides are being applied, has resulted in and continues to cause overall disturbance to the natural ecosystem. Through the studies of Rachel Carson, as infected insects were being consumed by birds, runoff from crops were leaking into streams and rivers and people were being diagnosed with illnesses. Because DDT is a synthetic chemical compound, many organisms do not have an enzyme to break it down and it becomes stored in fat and liver tissues where it cannot be

This suggests that the roadsides was once beautiful and bloomed with healthy and lively vegetation; however, they are now destroyed due to the use of pesticides. From these examples, it can be shown that even though pesticide is beneficial, its deadly effects outweigh its benefits; in addition, it is a dangerous substances to the environment, organisms, and even human.

It is the role of EPA to determine that any cancer-causing pesticide or chemical may perhaps not be used despite of its health hazards. If a pesticides social, economic and environmental benefits are believed to have greater relevancies than risks, then there is a need to make food, air, water, and soils free from any form of toxic chemicals (EPA History 2017). Organically mature foods as well as sustainable pest control methods are very key issues to health environment and

In the article, “DDT Ban: Is DDT Dangerous or Beneficial” written by Lillian Forman, looks at a chemical used to fight off insects that carried disease after World War II. The chemical compound that was used to kill the unwanted pest is called dichlorodiphenyltrichloroethane or DDT. The chemical was used to fight insects that carried diseases to soldiers in camps, people in refugee camps, tourists in tropical areas, and people in bombed out cities. Because the chemical was used in Europe and Asia, and save millions of lives many believed it was a miracle chemical. Though some insects like lady bugs, bees, praying mantises are useful, humans have a good reason to fear other insects. Some of the feared insects include mosquitoes, ticks, body lice, cockroaches, and flies. Mosquitos carry malaria and contagious illnesses such as West Nile virus. Ticks carry Lyme disease and body lice infect their victims with typhus. Whereas cockroaches carry germs that can cause severe gastrointestinal problems. Flies carry even more dangerous pathogens, some of which cause deadly meningitis. Insects are harmful to more than just human health, locusts periodically destroy crops, termites eat away wooden structures, and moths ruin cloth.

Students received the same 1x10-2M stock solution of their assigned insecticide. A serial dilution was conducted by combining 200µL of the 1x10-2M stock solution and 1.8mL of DMSO into a test tube and was labeled 1x10-3M. A 200µL sample of the 1x10-3M solution and 1.8mL of DMSO was placed into two glass test tubes created two 1x10-4 solutions. Four filters were cut to fit inside plastic cups. The two 1x10-4solutions were applied to two of the cut filters. The remaining two filters were saturated with 2mL of DMSO as the control. The four filters dried for approximately 30 minutes. Four plastic cups were labeled: Adult 1x10-4, Adult control, Juvenile 1x10-4, Juvenile control. The dry filters were placed into the designated plastic cups. Five

Pesticides is substances that kill or keep away things, which will harm or other your plants or products such as insects, weeds, bacteria, rodents, or fungi. For example, famers and gardeners uses chemical spray on their plants to keep away or kill insects or any animals that would harm their products.

America the Beautiful! So why are we destroying it everyday with the use of pesticides? It has been proven that pesticides have affects on it's surrounding, although made to improve earths resources, they typically take there negative effect on the environment in time. Pesticides affect more than the environment; they also affect the animals and humans living in the environment. There are alternative, to this major problem but, we as the caretakers of earth must act fast. In the following paper I'm going to share with you what pesticides are. I'll tell you why they are not safe to use and some of the affects of pesticides. Last, I will talk about some new alternatives there are

After countless studies, pesticides have been linked to cancer, Alzheimer's Disease, ADHD, and even birth defects. Pesticides also have the potential to harm the nervous system, the reproductive system, and the endocrine system. Not only are pesticides found in farms, but they are found in or around your home, too. Lots of people use insect repellent in the summer to avoid getting bitten by blood sucking insects such as mosquitoes. Well, insect repellent has the pesticide in it. If you have a wooden deck on your house, then that probably contains that pesticide Chromated Copper Arsenate, which helps in to preserve the wood so it does not rot overtime. Some other common items that contain pesticides are known as bleach, certain types of paint, and even a few swimming pool chemicals. If you have a lawn, you probably have weed killers, or herbicides, to prevent the growth of weeds. Some pesticides are also used on other animals besides insects, such as unwelcome rodents like rats and roaches. All sorts of food products have pesticides such as organic foods and much more. DDT was a most used pesticide for insect control in the United States until it was banned in 1972 by the United States Environmental Protection Agency (EPA). DDT was initially used by the military in WW II to control malaria, typhus, body

The discovery of such chemicals came about long ago when testing them to be used as chemical agents for the killing of man (Carson, p.16). The chemicals used now however are a synthetic version, but are even more potent. “They have immense power not merely to poison but to enter into the most vital processes of the