Investigating the Effects of Different Pollutants on Hydroponic Plant Growth

Overview

Objectives/Goals I wanted to see how different pollutants in the environment will effect the growth of plants. Methods/Materials Collected pollutants (Exhaust, motor oil, fertilizer, soapy water, pesticide) Made a solution with water. 1 tablespoon of pollutant with 1/3 cup of water. Hydroponically grew plants. (radish) 4 cups with different pollutants. 4 seeds per cup 24 cups all together including the control. 96 seeds Recorded germination rate and growth for 2 weeks. Results Germination rates- Control all seeds germinated 4-5 days Exhaust - 50% germination 5-6 days pesicide - 12% germination 7-8 days motor oil, fertilizer, soapy water - 0% germination Growth -Control Average 1.69 inches Exhaust - 1.09 inches Pesticide - .07 inches Conclusions/Discussion Pollutants do have an effect on plant growth. Some effect the plants more than others. Motor oil, fertilizer, and soapy water. the solution rate was most likely too strong. Motor Oil will choke out the plant by blocking stomatas. We need to be aware of how pollutants are getting into our environment.

Competition history

• CSEF 2009 Toxicology (Junior Division Only) · Entry J2306

Resources

• CSEF project summary ↗

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