• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

The Effects Of Large Scale Use Of Pesticides.

Extracts from this document...

Introduction

The Effects Of Large Scale Use Of Pesticides Firstly, we need to establish the core concept of a pesticide. A pesticide is a group of different chemicals that are specific to kill different types of animal or plant. The three most common types of pesticide are insecticides, fungicides and herbicides. In this essay I will be explaining the advantages and disadvantages of large-scale usage of pesticides, and the different ways in which they affect us. The main reason we use pesticides are to stop inter-specific competition, either between weeds and crops or between insects and crops. Many Farmers use pesticides to encourage healthy crop growth, prevent weed growth and prevent damage by pests and disease. This boosts commercial value of the crop but may mean the crops are not as healthy to consumers because traces of the chemicals are left in the plants. The use of chemicals to protect crops is not a new idea. Three thousand years ago sulphur was used by the Greeks to kill pests, and the Chinese used arsenic in AD 900. (Food, Farming and the Environment, Damian Allen and Gareth Williams, 1997) There are obvious advantages to using pesticides. The most vital of these is the effect on global food production. Estimates of the pest problem on a worldwide scale suggest that, without insect pest, world food production could be increased by about a third. ...read more.

Middle

Note that the concentration is highest in the final predator (ppm = parts per million) (6) The effect may be quite dramatic, as with DDT, which is now found in virtually all animal tissue, in every food chain, and even the Antarctic snow (Food, Farming and the Environment, Damian Allen and Gareth Williams, 1997). However thanks to its use, millions of people survived who would other wise have died of malaria or starvation (Biology: Principles and Processes, Michael Roberts, 1993). Although this case is an extreme circumstance, laws have now been put in to place to stop these dangerous chemicals from coming on the market again, although there is still a question about the amount of pesticides used on crops. A person may consume 1.5g of natural toxins per day in foods such as coffee, potatoes, tomatoes, whole wheat and brown rice. This is about 10000 times the average amount of pesticide residue consumed. (Charles, New Scientist) Another problem, that that may arise is if a particular pesticide is used a lot the pest may eventually become resistant to it. The pesticide no longer kills the pest and so a new one has to be developed at all times which results in more resources and cash flow being ploughed into developing and testing. An alternative method to chemical pesticide use is using biological pesticides or Bio-pesticides. ...read more.

Conclusion

(4) Overall when using pest controls there are a number of factors to consider, to get maximum effect and sustain pest control. The important factors to consider are how efficient each method is at controlling the pest, the cost, damage that might be caused to the environment, and possible health hazards. In a survey of the 200 commercial grain storage premises contacted in 1995, 114 stored grain and 104 were visited to obtain data on pesticide usage. Ninety three percent of those visited were found to use pesticides. (7). In addition in the developed world we have become increasingly concerned about the long-term effects that chemical pesticides and herbicides may have on us as we eat our well-sprayed food. Even with the latest technology farmers will still resort to using pesticides, agreeing with the predicted US demand for pesticides in 2006 will reach $10.6 billion (8) We have also become progressively greener over recent years; with more and more people expressing concern over the future of the earth and our effect on it, hence the reason for many people turning to organic based products. The Organic Trade Association states that nearly 10% of cropland in Europe is dedicated to organics. (9) Substituting biological control for chemical intervention therefore seems like a very good idea. However the use of pesticides is integral to the framing industry and is important to our world as it revolves around price and quality of such indispensable goods such as crop. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Living Things in their Environment section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Living Things in their Environment essays

  1. Marked by a teacher

    The effects of disinfectants and antibacterial soap on bacterial growth

    5 star(s)

    Different methods of applying the disinfectant to the bacteria can be experimented with, including spraying it on a bacterial lawn and adding it to the bacterial food source. ____________________ Sterilization: The complete destruction of all forms of microbial life-including cells, vaible spores, and viruses is called Sterilization.

  2. Marked by a teacher

    Research question - Is using dogs for work ethical?

    5 star(s)

    can be injured during an attempt to deactivate a bomb, more animals and humans can be saved because of this risk or sacrifice. For instance, animals in the past were tested on for cosmetics- which is thought to be unethical, but because of this previous experiment more companies in the

  1. Marked by a teacher

    Balance of Food Production and Conservation

    4 star(s)

    As a last resort eutrophic lakes can be dredged to remove mineral-rich sediment, but this is expensive and it takes a long time for the ecosystem to recover. These are chemicals that are applied to soil to provide crops with nutrients; nitrogen in the available form of nitrates is an

  2. Marked by a teacher

    The Issues of Pesticides.

    4 star(s)

    thousands each year in developing countries due to warnings on labels not being read or interpreted properly. Some members within a species of pest are genetically less susceptible and may survive to pass on their resistance to the next generation. This could lead to the development of significant pest resistance.

  1. What Factors are responsible for the success of Insects?

    Insects can live in horse intestines, in acidity levels comparable to vinegar, or in petroleum in oil fields. Some even live in the sea as lice in the nostrils of sea lions and stay dry as they accompany their hosts of deep dives underwater.

  2. Sand Dune Ecology and Conservation Course Work

    emerge and as the temperature steadily drops we see most populations steadily drop. At the back where there is low temperature, low light intensity, and low wind speed we see the emergence of taller/bigger plants. The dune formation shows that the height of the dunes and the distance from the

  1. An investigation in the different species of plant life through bare sand and grassland ...

    16 21 10 5 6 26 -20 400 22 15 0 9 13 -4 16 23 10 0 6 13 -7 49 24 0 0 2.5 13 -10.5 110.25 25 45 0 14.5 13 1.5 2.25 26 20 60 11.5 30 -18.5 342.25 27 40 20 13 28 -15 225

  2. The Effects of the Wolf Reintroduction on the Coyotes of Yellowstone

    If there are packs, they usually have six closely related adults, yearlings, and young. The packs are smaller than those of wolves and the relationships between each member are a lot more unstable. Coyote?s are capable of making their own burrows even though they appropriate the burrows of woodchucks or American badgers.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work