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Is Chemical Pest Control A Good Thing? Introduction Pests are organisms that reduce the quality or yield of a crop

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Introduction

Title: Is Chemical Pest Control A Good Thing? Introduction Pests are organisms that reduce the quality or yield of a crop. Many crop pests include aphids and caterpillars; however slugs and snails also cause a lot of damage. Pest control involves Biological, Chemical and Physical processes. Plants which are grown closely together may cause the rapid spread of fungal diseases and insect pests, from plant to plant, which soon affects large areas and causes heavy damage in a short period of time. It is important to control unwanted organisms, such as weeds, pests and insects that generate diseases from fungi and viruses, in order to obtain a harvest of high quality. * Biological Pest Control Biological control does not use any chemicals. It involves other organisms that are predators or parasites of pests. E.g. Greenhouse infested whitefly is where the predatory wasps are introduced. The wasp lays eggs into the scale (larva) of the whitefly. A young wasp emerges from each larva, having used the larva as a nutrient supply. The whitefly young are killed, so its population decreases. Genetic Engineering can also be used. A gene must be transferred to a potato plant which enables them to produce a natural insecticide. ...read more.

Middle

Contact herbicides and fungicides are absorbed directly through the surface. These may be low in cost but need to be reapplied as the effect of the chemical is temporarily and moreover some pests are able to avoid the pesticide. * Systemic Pesticides Systemic insecticides are sprayed onto the crops. They are absorbed by the leaves and transported around the plant. A sap sucking insect such as an aphid feeding on the crop plant will be poisoned when takes in the pesticide. This method can be very effective as the spray doesn't need to come in contact with every other insect. Systemic herbicides are absorbed by the leaves and transported through the weed and kill all of its tissues including the roots. * Residual Pesticides These are sprayed onto the soil or used to treat the seeds before they are planted. They remain active in the soil and kill fungal spores, insect eggs and larvae. > Advantages of Chemical Pest Control * This process is cost effective as farm chemicals are an economical way of controlling pests. They require low labour input and allow large areas to be treated quickly and efficiently. ...read more.

Conclusion

However, the strength of chemical pesticide is far greater than any other method and I believe that by means of improving this technique of extermination, chemical pesticide can become the ultimate line of attack when it comes to eradicating organisms which damage the environment. There are different approaches which are vital to reduce or even eliminate the majority of pests, insects and other organisms which cause harm to the crops in the environment. When selecting a good quality of Chemical Pesticide, there are some considerations involved... * Selecting the appropriate product. The one which can significantly lower the quantity of pests and cause limited damage to the crops. * The product needs to be compatible with other controls used aside, e.g. (biological control) It should not disrupt or interfere with other controls. * The application should be aimed to the target organism and must be accurate in its performance. * The application should be favourable to all weather conditions. * The product must only be applied once to the crops and immediate protection and extermination should be maintained. The different ways which are carried out to control the pests all have their advantages and disadvantages. By the correct, safe and accurate methods pest control can be minimised and farming will become more profitable. ...read more.

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