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How Plants and Chemicals React

Materials: Total: $22.45
 * 3 Marigolds - about $3.00 per seed packet
 * Control and one per chemical
 * Water- free
 * Soil- free
 * Chemicals
 * Potassium Nitrate- $6.25 per 500 mL
 * Phosphoric Acid- $13.20 per 100 mL

You could be more specific on the chemicals. - Jess Earl\ What chemicals will you be using? - Jess Earl

Hypothesis: If you pour safe chemicals containing vital nutrients on plants, then they will affect the plant in the same way the nutrients do.

Background: Plants need a lot of chemicals to live and grow. "The most important chemicals that plants need, without which they won't thrive, are the three macronutrients: potassium, nitrogen and phosphorus." ("What chemical elements are needed for plant growth") Each element does a different thing for the plant. "Potassium controls the stomata, the plant cells that use water." (Benson) If the plant doesn't get potassium then it will not be able to get water correctly and the plant will be unhealthy. So what would happen if we poured chemicals containing these nutrients on the plant?

Procedure:
 * 1) Grow plants for one month
 * Watering plants twice a week
 * 1) Record plant height and health
 * 2) Start adding chemical in with the water
 * 1 mL of each
 * 1) Grow for another month
 * Still watering twice a week
 * 1) Rerecord plant height and health
 * 2) Compare results

Works Cited:

Benson, Phyllis. "What Does Potassium Do for Plants?" //EHow//. Demand Media, 10 Apr. 2009. Web. 18 Oct. 2013. .

"What Chemical Elements Are Needed for Plant Growth?" //HowStuffWorks//. HowStuffWorks, Inc, n.d. Web. 18 Oct. 2013. .

Damask, Tarah. "Home Guides." Home Guides. Demand Media, n.d. Web. 05 Dec. 2013. .

Christenson, Donald R. "Phosphorus for Crop Production." Fieldcrop.msu.edu. Department of Crop and Soil Sciences, Michigan State University, n.d. Web. 5 Dec. 2013.

"Potassium Nitrate." Potassium Nitrate. Princeton University, 22 Nov. 2013. Web. 05 Dec. 2013.

What types of chemicals are you going to use? You need to be more specific. -Alex McMahan You need to expand on your procedure more. How often are you going to put these chemicals on and how often will you water the plants? -Alex McMahan You need to be specific on what physical changes that you will notice when the plants are affected. -Lauren Jenkins How many plants will you test? -Lauren Jenkins You need to list how much each item you will be using in your experiment will cost, and the total in all. (Kaylinn Tessendorf)