Sunday, 22 May 2005

This presentation is part of: Pre-College Reseach Posters

The Allelopathic Effect of Kava on Plants

Waqar Tariq, John F. Kennedy Memorial High School, Iselin, NJ

Allelopathy is defined as a way in which certain plants prevent other plants from growing too close to them; this is usually done through the use of chemicals that the plant produces and releases into its surroundings. Kava is a perennial pepper plant from the Oceanic region that is known to have these allelopathic affects. In this experiment three different type of plants seeds were grown in containers of the same size, with the same amount of soil, water, and light exposure. Within each container of specific plant seeds, a concentration of 0.25g, 0.5g, or 1.0g of kava extract was mixed into the soil over a period of ten days. It was discovered that kava extract had little to no effect on the plants, while the extent of inhibition did vary from one type of plant to another. Except for a few exceptions, most of the data according to a T-test was not statistically significant. Thus, more research needs to be conducted in order to determine the exact effect of kava extract on plants.

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