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How Does Being Watered With Different Liquids Effect Plants' Growth?

My Science Fair Project 2013

Catherine Hudson

on 17 November 2013

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Transcript of How Does Being Watered With Different Liquids Effect Plants' Growth?

How Does Being Watered With Different Liquids Effect Plants' Growth?
My Science Experiment
Which liquid will best be used when it comes to watering plants, milk, orange juice, apple juice, Sprite or Diet Coke?
IF the plants with water, milk, orange juice, apple juice, Sprite or Diet Coke are watered daily and given the equal amount of sun, the growing plant watered with water will grow the tallest because anybody with, at least, a fourth grade education knows that plants are mostly watered with water. Water should be the best liquid solution.
The independent variable in my experiment is watering my bean plants with different types of liquids. The dependent variable in my experiment is the plants' height measured using a centimeter ruler. The control variables in my experiment are the amount of sunlight and liquid for the bean plants.
To make sure all are safe in this experiment…...

-There was adult supervision provided while planting the beans

-The plants were left inside by a window so they can get sunshine but no rain. If rain fell into the plants, it would interfere with what is trying to be found out with my experiment.

-Instead of using flowerpots, I used plastic cups. That way, if a plant fell over, it wouldn’t have broken a pot. That prevented any injuries. Plus, it prevented the plant to lose its containment unit.
In the earlier listed hypothesis, it states that water may have been the best liquid to use when watering plants (compared to milk, orange juice, apple juice, Sprite and Diet Coke). After trying to grow plants A though F for about 2 weeks, there has been a realization that the hypothesis was correct. Plant A, which was watered with simple tap water, grew the tallest, at 48 centimeters tall!

At first, it was believed that only Plant A would actually sprout, so it was a bit nervous. IT was very surprising to find that by the third check, Plant A and Plant F were about tied in height! Almost all of the plants had sprouted, and actually grew amazingly, compared to the prediction made.
By completing this experiment another problem had come to mind, “How Does the Amount of Water Change a Plant’s Growth?” This would become a very interesting project to conduct.
steps for my project are as follows:

1.) PLANT THE BEANS. Take the bean seeds and plant them as directed oThen the package.

2.) LABEL. Stick the labels onto the cups and label A-F.

3.) WATER. Water plant A with 1/4 cup of water. Water plant B with 1/4 cup of milk. Water plant C with 1/4 cup of orange juice. Water plant D with 1/4 cup of apple juice. Water plant E with 1/4 cup of Sprite. Now, water plant F with 1/4 cup of Diet Coke.

4.) REPEAT. Follow directions of step three once a day until the conclusion of the experiment.

5.) RECORD DATA. Twice a week, or on any regular basis, record data of height change in the notebook. (You will still be following step 3 once a day.)

6.) CONCLUDE. Take the finalThe measurement change and identify the final growth change. Now, you will be able to see which plant grew tallest. Therefore, you will find out which liquid works best as “water” in the cycle of growing
All research found is listed below
1. There are environmental factors affecting plant growth such as temperature, water supply, and supply of mineral nutrients.
2. If you have too many mineral nutrients, the plant will die. This is the same for water supply.
3. Milk has lots of mineral nutrients, and so does orange juice, and soda has some. So this information will definitely affect plant growth.
4. Once the water goes into the plant through the roots, it travels to the leaves. Then it moves through the xylem vessels and spreads throughout the plant.
5. If a plant gets too much water, the roots will rot and the plant cannot get oxygen. This is how the plant dies (see fact 2). But if there’s not enough water, nutrients can’t get to the plant; this also causes the plant to die.
6. Water helps the plant stand tall by delivering nutrients to it. This is why a plant droops over when it’s dying of thirst. A liquid with the right amount of nutrients will help the plant grow.
7. Water can be split up into the two things that it’s made of- hydrogen and oxygen.
8. Other liquids aren't necessarily made of hydrogen and oxygen, so the effect on plant growth will change.
9. Cellular respiration is something a plant uses as help for growing. It is glucose combined with oxygen, making carbon dioxide and water, which releases energy; the energy helps the plant grow.
The following materials were used to conduct this experiment:

-Six plastic cups
-Six grown plants, all of the same height
-Supply of water
-Supply of milk
-Supply of orange juice
-Supply of apple juice
-Supply of Sprite
-Supply of Diet Coke
-1/4cup liquid measuring cup
-Notebook & pen (to record data)
-Centimeter ruler
PLANT A: This plant took about a week of no growth, and then popped up out of nowhere! It grew a lot at first, and then started growing a bit slower. Plant A was a success! This would have been the tallest growing plant during observations.
PLANT B: This plant, on the other hand, had not grown a single centimeter out of the ground! It grew mold, and almost all of the milk, as soon as it was poured, had flown right through the soil and through the bottom of the cup. Plant B did not receive the best outcome.
PLANT C: Grew, but slowly. It had also grown mold, because orange juice spoils. It grew, unexpectedly. Maybe if it grew faster during this time, it would grow to be much higher.
PLANT D: This plant had shown a bit of a surprise. Plant D grew most out of all of them, not counting Plant A. Plant D had a great outcome! It grew about the same height with Plant A (water) but then Plant A had grown more than Plant D.
PLANT E: Had an “okay” outcome. Being watered with Sprite, it grew amazingly! Compared to other plants, this plant hadn’t grown that much. Plant E went pretty well.

PLANT F: Was a confusing little plant! At first, Plant A and Plant F were tied! Is that hard to believe? The data measurements are willing to prove it. The plant then began growing slower and slower…. until it was actually the 4th tallest plant. Plant F really was very surprising.
The following is what have been observed of these plants over time.
Oh! Let's not forget...
1. Broome, Stephen. “Factors Effecting Plant Growth.” Department of Soil Science at NC State University, Main Page. N.p., n.d. Web. 18 Feb. 2011

2. Armstrong, Shari. “How Does Water Effect Plant Growth.” Gardening Know How- Gardening is Easy! Let Us Show You How. N.p., n.d. Web. 20 Feb. 2011

3. “Processes of Living Things- Chapter 4” Harcourt Science [5] Orlando: Harcourt School Publishers, 2000. A98 and A99.
So, that's what has been studied for my 7th grade science fair. Hope you enjoyed! Feel free to comment, ask questions, and critique!
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