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Importance of agriculture
Negative effects of excessive use of pesticides on the environment
Negative effects of excessive use of pesticides on the environment
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Recommended: Importance of agriculture
Putting Aside Pesticides There are 2.5 billion pounds of pesticides being applied to agricultural products each year in the United States. This is ten times more than was applied forty years ago. It is still unknown as to what type of exact effects these chemicals may have on individuals. Some farmers that have been using pesticides in their fields and developed leukemia are finding that the cause of their disease is from inhaling pesticides. These chemicals are still in use today and most of them have never been tested for the short or long-term effects that they may have on humans. Each year there are 10,000 pesticide related poisonings. On July 4th 1985, over 300 Californians became sick after eating watermelons treated with the pesticide tenik. Testing supermarket produce is a way of determining the amount of exposure the consumer receives through common produce like carrots, tomatoes and lettuce. 44% of foods that were tested in supermarkets were found to have some traces of pesticide residue on them. Of all the pesticides found, nineteen of them were a pesticide called DDT. DDT was banned in this country 12 years prior to the testing. It was believed that these chemicals might have entered this country from another country that doesn’t have pesticide restrictions as the U.S. does. Pesticides are contaminating the Earth’s water supplies. There are seventeen pesticides found in twenty-three state’s water supplies right now. Scientists at Cornell University conclude that 99% of pesticides miss the intended source and find their way into the water, air and soil. Most of the pollution isn’t strong enough to create an immediate impact on humans so the wildlife is the primary target to these contaminates. Animals such as the European Starling birds are constantly being tested and found that they are greatly affected both behaviorally and psychologically. Farming practices that do not use pesticides/herbicides are slowly becoming introduced bit biologically created pesticides are not nearly as productive as found in preliminary testing. Biotechnology has shown to have successfully resisted pests in plants that were destroyed by pesticides but still hasn’t proven itself as a better alternative. William Liebhardt Ph.D. is an Agricultural Specialist at the University of California, Davis and he says, “When you start spraying with pesticides, you disrupt the natural balance that exists in nature. As a result, you end up killing beneficial insects, then insects that were not a problem become problems and this happens repeatedly” requiring more and more spraying.
My initial observation was that simple conservation actions such as reducing the use of pesticides can achieve measurable improvements in habitat quality and environmental health. Herbicides are toxic to most mammals as well as to the beneficial insects that you want to encourage in your garden. Sometimes herbicides seep into the ground water; causing contamination of which the long term effects are not known. Herbicide application can also result in drift or movement in the soil, this endangers wanted vegetation nearby. Herbicides are used far too rampantly. Excessive use of toxic herbicides is used when not necessary and because most are not aware of the many other natural alternatives. We must find more ways to cut back on the use of chemical herbicides and change to biological weed control methods.
The Everglades used to be a very beautiful tourist attraction, but have been largely affected by the existence of pesticides. However, the majority of pesticides is not specifically targeting the pest only but they also affect non-target plants and animals during their application. The Effect of pesticide runoffs on the Everglades is destroying one Florida’s major tourist attractions due to the cultivation of sugar cane just to mention one of those responsible and creates a loss of natural habitat, water pollution, and threatens existence of wildlife. Many pesticides are not easily degradable; they persist in soil, leach to groundwater and surface water and contaminate wide environment.
There are many issues regarding the raising and producing of various livestock animals, and the use of pesticides on various types of crops. The movie Food.Inc does a good job explaining these issues, but in a very biased way. It makes agriculturists look like terrible people, when this is not the case.
Pesticides in ground water seems to be a continual problem with people nowadays, because they think that the pesticides don't soak into the ground water. They believe that when a pesticide is sprayed on a plant, the leaves are what pick up the pesticide but thats false, the roots pick up the pesticides which proves that the pesticides have to soak at least a few feet into the ground.
One of the most controversial and commonly used pesticides at the moment is chlorpyrifos. The insecticide chlorpyrifos is used to repel mosquitoes, cockroaches, and fire ants from crops. However, studies show that chlorpyrifos can cause delays in infant brain development and decrease in birth weight, impair neonatal reflexes and motor skills, and increase risk of Attention Deficit Hyperactivity Disorder (ADHD). Chlorpyrifos has also been linked as one of the strongest environmental exposures that leads to autism. Although chlorpyrifos has been banned for residential use, it is still used for agricultural purposes. There is an ongoing debate about whether chlorpyrifos should no longer be used on food crops at all. Even though there is a justifiable
Are pesticides beneficial? Do farmers waste their time spraying pesticides in the spring? Pesticides have saved people’s lives from several different diseases. These diseases include malaria which a person could get from being bit by a mosquito. There’s also the black plague, which was a devastating event that happened in Europe. With pesticides the outcome of the plague could have been different (Pros and Cons of Pesticides).
...ortation of plants, fruits, vegetables, and animals. Indiscriminate pesticide use kills the good with the bad. Long term and wide spread pesticide use poisons underground water sources, which, in turn, poison plants, animals, and humans. And, finally, by our uninformed actions, new super races of pests continue to evolve and create even greater dangers than the original.
Pesticides are chemicals that are put on crops but can kill people or make them very sick. In the story “Silent Spring” by Rachel Carson she talks about the dangers of a pesticide called DDT. Carson’s writing is helping inspiring people to solve the problem. To begin, the land used to be beautiful. For instance, the land described in the story was described as ‘perfect.’
Many of these chemicals such as insecticides and pesticides, have many harmful attributes. But because there are limited restrictions on the production and use of them mankind as well as our one and only earth is being exposed to toxic chemicals. These toxic chemicals often used in agriculture sink into our soil and are sprayed onto the food that we consume. These chemicals are also designed to kill off certain insects that are detrimental many ecosystems. An article written by senior scientist Richard Denison Ph.D. from the Environmentalist Defense Fund.
Instead of using pesticides in farming a better alternative would be biological control. This is when a natural predator is released into the crop growing area as a result the number of pests can be reduced.
Overall, there is excessive and reckless usage of pesticides in this country. By being educated on methods like the Integrated pest management (IPM) we can more efficiently and effectively use pesticides. IPM focuses on using disease-resistant plants, encouraging natural predators of problem pests, and timing pesticide applications to when pests are most susceptible. For example a method IPM would recommend is changing irrigation practices to reduce pests, since too much water can increase root disease, weeds, and various species of bugs. Pesticides are only one weapon in the fight against pesticides. We need to utilize multiple other approaches like genetically engineered organisms. Scientists have taken a common soil bacterium, Bacillus thuringiensis (Bt) and inserted a gene from the bacterium that produces a toxin into plants. This gene causes plants to produce the natural toxin that is harmless to humans, but lethal to certain insects. Farmers and consumers ultimately gain health benefits from reduced exposure to pesticide residue. Important environmental benefits are gained as well, it limits pesticide runoff that otherwise would pollute our environment. Billions of dollars of economic benefits are gained by reducing the need to purchase pesticides and machinery. There are even higher crop yields by utilizing the engineered plant. There is the
U.S. Fish and Wildlife Service, (FWS). (2014, January 15). Pesticides and wild life. Retrieved form http://www.fws.gov/contaminants/info/ddt.html
An owl lies motionless on the ground. A necropsy of the dead bird reveals that it had slowly and horrifically internally bled to death after consuming a poisoned rat. Rodenticides are to blame for the owl’s death. Studies show that humans have used many forms of pesticides, one of them being rodenticides, to kill pests (“Rodenticides: Background & Hazards”). The United States, India, Argentina, and the Arctic are places where this problem is most impactful, as there is an increasing amount of pesticide usage in these areas (“Around the World”). These areas produce large amounts of pesticides, which can cause dangerous effects on the environment (“Around the World”). These pesticides should be replaced with natural predators, such as owls. According
The new chemicals which are produced to kill these strong pests and weeds may be more harmful to other plants and remove nutrients within the soil, in turn reducing the yield of agricultural crops. The benefits of these characteristics are seen in Argentina according to Pelletier (2010) as they use glyphosphate resistant soybean which allowed the comeback of this crop, as the soil was severely damaged from monoculture (The cultivation of a single crop in a defined area).... ... middle of paper ... ...
Pesticide is a chemical used to prevent, wipe out and control the pest problem in agriculture. The use of pesticides have become a common practice around the world, and used almost everywhere, such as agricultural fields, homes, park and school, and so on. Most pesticides are insecticides, herbicides and fungicides that have distinct purposes. Insecticides are used to control insects; herbicides are used to destroy plants; fungicides are used to prevent molds and mildews. Most commonly pesticides contain highly toxic chemical such as Acid copper chromate (ACC), Acephate and Chlorpyrifos, and so on. One of example of insecticides, Chlorpyrifos, sprays widely on a variety of food and golf courses in order to control pests in a cornfield. However, “Chlorpyrifos can cause cholinesterase inhibition in humans; that is, it can over stimulate the nervous system causing nausea, dizziness, confusion, and at very high exposures (e.g., accidents or major spills), respiratory paralysis and death.” (EPA GOV) In the market has thousands of products are similar as Chlorpyrifos.