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How do different liquids affect plant growth?

Grace Kratz and Rebecca Morrell's 2013-14 Science Fair Project
by

Grace Kratz

on 19 January 2014

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Transcript of How do different liquids affect plant growth?

How do different liquids affect plant growth?
By Grace Kratz and Rebecca Morrell
3rd Period

Day 15
Introduction

We decided to do an experiment on whether or not different liquids (ex. Soda, Milk, Power Drinks), would affect a plant's growth. We had a lot of fun doing this experiment, and the end results were very interesting.
Days 1-14
Day 16
Day 17
Day 18
Day 19
Day 21
For the first 14 days, we watered each plant with 2 tsps of tap water each day.
Hypothesis and Materials Used
Our hypothesis was that the water with Miracle Gro in it would make the plant grow more and stay the healthiest.

We used the following materials:
19 small plastic cups
30 Garden Bean seeds
Jiffy Organic Seed-Starting Dirt
Plastic tray
15 index cards
1 Bottle of Lemon-Lime Gatorade
Miracle Gro Plant Food
Coca-Cola
Medicine Dropper(used to put liquids into cups)
1% Milk
6 Skewers
Tape Measure


Experimental Design
Independent Variable: The liquid we water each plant with.
Dependent Variable: The height of each plant.
Controlled Variables: The type of plant and how much liquid each is watered with.

Procedure:
For the first 14 days(until at least 10 had sprouted)we watered them with tap water. By the 15th day, numbers 6, 4, 2, 8, 10, 7, 12, and 1 had sprouted. On the 15th day, we divided 10 of the into 5 groups of 2. We transferred some plants into cups that had no sprouts from cups that had more than one sprout. The other 5 that had not sprouted continued to be watered with tap water. We used the 10 other plants, which were numbers 1,2,7,8,9,13,4,6,10, and 12, as the plants we were going to experiment with. Numbers 1 and 2 were our control group, Numbers 7 and 8 were watered with Coke, Numbers 9 and 13 were watered with Miracle Gro water, Numbers 4 and 6 were watered with Gatorade, and numbers 10 and 12 were watered with milk. We continued the experiment for 24 days.
November 22-December 7, 2013
December 8, 2013

On day 15(or Dec. 8), we transferred plants from the few cups that had multiple sprouts into cups that did not have any sprouts yet. We also seperated numbers 5,14,3,15,and 11 from the others, and continued to water them with tap water.
December 9, 2013
On December 9, number 15, one of the few we set aside to be watered with water, sprouted.
All of the plants were watered with 2 teaspoons of their designated liquid.
(See graph for plant growth)
December 10, 2013
All received 2 tsps of their designated liquid.
(See graph for plant growth)
December 13, 2013
All received 2 tsps of designated liquid.
We also used skewers to make stakes for the plants.
(See graph for measurements)
December 15, 2013
All received 2 teaspoons of designated liquids.
(See graph for plant measurements)
Day 20
December 18, 2013
All were watered with 2 teaspoons of designated liquids twice.
(See graph for plant measurements)

December 22, 2013
Each received 2 teaspoons of designated liquids.
(See graph for plant growth)
Bibliography
Source #1
(This source is a website.)
Title of Source: How does Water affect plant growth?
Date Published: Not given
Author of Source: Shari Armstrong
Source URL:gardeningknowhow.com Date Accessed: October 28, 2013
I learned that if a plant’s soil has too much water, the roots can rot, and the plant can’t get enough oxygen from the soil.

Source #2
(This source is a website)
Title of Source: Why Plants Need Water.
Date Published: Not given
Author of Source: Clemson University
Source URL: clemson.edu Date Accessed: October 28, 2013
I learned that the most important thing about driving water movement in plants is a process known as transpiration.

Source #3
(This source is an Encyclopedia)
Title of Source: How Plants Grow
Date Published: 2005
Author of Source: William A. DiMichele
Volume #15 Page #536
Place Published: Chicago, IL
I learned that roots absorb water and minerals from the soil. I also learned about how the stem of a plant carries the minerals throughout the plant.

Source #4
(This source is a website)
Title of Source: Plants and Growth Affects
Date Published: Not given
Author of Source: Not given
Source URL: sememphis.org Date Accessed: October 28, 2013
I learned that water would do a good job of making the plants grow.

Source #5
(This source is a website)
Title of Source: Examining the effect of watering on plant growth.
Date Published: Unknown
Author of Source: Not given
Source URL: all-science-fair-projects.com Date Accessed: October 28,2013
I learned about how glucose can affect plants.


Graph
Day 22
Day 23
Day 24
December 23, 2013
December 26, 2013
December 29, 2013
All plants received 2 teaspoons of their designated liquids.
(see graph for plant growth)

All plants received 2 teaspoons of their designated liquids.
(see graph for plant growth)
All plants received 2 teaspoons of their designated liquid.
(see graph for plant growth)
Key
Blue=Gatorade
Green=Control Group(Water)
Yellow=Milk
Pink=Coke
Red=Miracle Gro Water
Conclusion
Our hypothesis was that the plants being watered with the Miracle Gro water would do the best. Our hypothesis was correct. The graph showed that the plants watered with Gatorade were the tallest, but they did not gain as many inches as the plants watered with Miracle Gro did. The plants gained this amount of inches from smallest to greatest; Milk at -1 inches, Gatorade at +0.88 inches, Control Group at +1.25 inches, Coke at +2 inches, and Miracle Gro at +3.75 inches.

Although we did not measure healthiness, it is important to know how healthy the plants were because it affected how the plants grew. On Day 19(Dec. 15), we noticed that numbers 12 and 8 were wilted and brown. On Day 20, (Dec. 18), #12 was dying (watered with milk), #6 was yellowish and wilted (watered with Gatorade), and #8 was wilted (watered with Coke). On Day 21 (Dec 22), we noticed that #2 was starting to yellow, #6 was wilting, #9 was yellowing, #10 was wilting, and #4 was dead. On Day 22 (Dec. 23), #9 had died. On Day 23, (Dec. 26), #8 started dying. On Day 24 (Dec. 29), #'s 9, 8, 12, 15, and 4 had died.

We learned a lot from this experiment. First, the obvious one. Miracle Gro water will help your plants grow more and stay healthier. We also learned a lot about how plants grow and absorb certain minerals, such as glucose. We learned about what a plant will absorb and what it won't.

If we were to do this experiment again, there would be a few changes. First, we would probably carry out the experiment longer. We also would use different types of plants during the experiment. We also would take notes that were more detailed and we would not skip any days (we probably would not do it during the Christmas season).



Source #6
(This source was an encyclopedia)
Title of Source: The Kingfisher Science Encyclopedia
Date Published: 1991
Author of Source: Hedlam, Catherine
Volume: Not Given Page: 539
Place Published: New York, Kingfisher Books
I learned about what a plant needs to go through the process of photosynthesis.

Source #7
(This source was a website)
Title of Source: Why Plants Need Water
Date Published: 2013
Author of Source: Clemson University
Source URL: http://www.clemson.edu Date Accessed: 11/4/13
I learned that transpiration is evaporation out of leaves and that 95% of water is used for it and that the other 5% of water is used for photosynthesis.

Source #8
(This source was a website)
Title of Source: How Much Sodium is in Gatorade
Date Published: 2013
Author of Source: livestrong.com
Source URL:http://www.livestrong.com/article/273703-how-much-sodium-is-in-gatorade/ Date Accessed: 11/4/13

Source #9
(This source was an interview)
Given By: Glen Morrell, M.D., Ph.D.
Date: 11/4/13
I learned that plants are made up of hydro carbons and where plants get oxygen, hydrogen, and carbon dioxide.

Source: #10
(This source was a website)
Title of Source: Jean Senebier
Date Published: 2013
Author of Source: Encyclopedia Britannica, Inc.
Source URL: http://www.britannica.com/EBchecked/topic/534381/Jean-Senebier
Date accessed: 11/4/13

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