Research Project

Topics: Oregano, Lamiaceae, Mosquito Pages: 12 (2970 words) Published: June 24, 2013
Project
In
Research

Potential of Oregano Leaves extract as Insecticide

Submitted by:
Rochelle Ann B. Panotes
Jhoanne Marie V. Tanzo
IV-A

Submitted to:
Mrs. Virginia O. Ecat

Acknowledgment

The researchers wish to express their deepest gratitude to the numerous persons who in one way or another helped in the completion of this study. This study will not be in reality if not for them.

To Mrs. Virginia O. Ecat, for her comments and suggestions in improving the mechanics of presentation of this study.
To their loving parents, friends and loved ones, for their inspiration, encouragement and understanding, as well as the moral and financial support.
And most of all, to Almighty God, for giving strength, courage and determination in the fulfillment of this study.

The Researchers

Abstract

This study determined the potential of oregano leaves extract as an insecticide. Specifically, this research answered the following: (1) What are the effects of oregano leaves extract (Coleus Aromaticus Benth) as insecticide to mosquitoes, in terms of: a. Behavior, and b. Mortality? (2) What concentration is considered the best insecticide for mosquitoes? (3) Is there any significant difference between oregano leaves extract as an insecticide and the commercial insecticide?

This study tested only one hypothesis: There is no significant difference between using oregano leaves extract as an insecticide and the commercial insecticide.

Chapter I

Potential of oregano leaves extract as insecticide

Introduction:

Mosquitoes are common insects in the entire world. They go through four stages in their life-cycle: egg, larva, pupa, and adult or imago. Adult females lay their eggs in standing water, which can be a salt-marsh, a lake, a puddle, a natural reservoir on a plant, or an artificial water container such as a plastic bucket. The first three (3) stages are aquatic and last 5-14 days, depending on the species and the ambient temperature; eggs hatch to become larvae, then pupae. The adult mosquito emerges from the pupa as it floats at the water surface. Adults live for 4-8 weeks.

There are about 3,500 species of mosquitoes found throughout the world. In some species of mosquito, the females feed on humans, and are vectors for a number of infectious diseases affecting millions of people per year. Some scientists believe that eradicating mosquitoes would have serious consequences for any ecosystem.

Mosquitoes are a vector agent that carries disease-causing viruses and parasites from person to person without exhibiting symptoms themselves. The principal mosquito borne diseases are the viral diseases yellow fever, dengue fever and Chikungunya, transmitted mostly by the Aedesaegypti, and malaria carried by the genus Anopheles. Though originally a public health concern, HIV is now thought to be almost impossible for mosquitoes to transmit.

There are many methods used for mosquito control. Depending on the situation, source reduction, bio control, trapping, and/or insecticides to kill larvae or adults may be used. An insecticide is a pesticide used against insects. They include ovicides and larvicides used against the eggs and larvae of insects respectively. The use of insecticides is believed to be one of the major factors behind the increase in agricultural productivity in the 20th century. Nearly all insecticides have the potential to significantly alter ecosystems; many are toxic to humans; and others are concentrated to the food chain.

One of the many ways to kill insects such as the mosquitoes is to burnColeus AromaticusBenthor commonly known as oregano.Oregano is a perennial herb, growing from 20 to 80 cm tall, with opposite leaves 1 to 4 cm long. It is characterized by an aromatic smell and bitter taste. It is sometimes called wild marjoram, and its close relative O. marjoram is then known as sweet marjoram.

Based from this idea, the researcher will conduct a research the purpose of...
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