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Intermediate-Level Science Projects

Do Bean Plants Grow Better in Soil or in Water?

If you read In Which Liquids Do Seeds Grow Best?, you already know a little bit about hydroponics.

Hydroponics is the practice of growing plants in water instead of soil. Many plants can be grown successfully in this manner. If you're interested in hydroponics, you might want to do an experiment in which you test whether bean plants (or another type of plant, if you prefer) grow better in soil or in water.

Standard Procedure

To learn more about the basics of hydroponics, check out www.vegsource.com, or www.sea-of-green.com.

You could start with seeds or plants of the same size, planting one in soil and keeping the other in water, while making sure other factors such as heat and light are the same.

Hopefully, you've gotten an idea of what an interesting area of science botany is, and will think about possibilities within the field for future science fair projects.

book cover

Excerpted from The Complete Idiot's Guide to Science Fair Projects © 2003 by Nancy K. O'Leary and Susan Shelly. All rights reserved including the right of reproduction in whole or in part in any form. Used by arrangement with Alpha Books, a member of Penguin Group (USA) Inc.

To order this book direct from the publisher, visit the Penguin USA website or call 1-800-253-6476. You can also purchase this book at Amazon.com and Barnes & Noble.

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