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Copy of Student Prezi Board MS51
Transcript of Copy of Student Prezi Board MS51
How does the number of rusty nails in the soil of a kidney bean plant affect the amount of bean growth?
· Wet paper towel
· 17 kidney beans
· 5 pots (each with a small hole at the bottom)
· 10 cups of soil
· Plastic container
· Grow light
· Spray bottle
· 60 nails
Allman, M. (n.d.). The Effect of Excess Iron in Plants. Retrieved from http://homeguides.sfgate.com/effect-excess-iron-plants-48927.html
Science Making Cars. (n.d.). Retrieved from http://www.bbc.co.uk/schools/gcsebitesize/science/ocr_gateway/chemical_resources/making_carsrev1.shtml
Kaiser, D., Lamb, J., & Bloom, P. (2011). Managing Iron Deficiency Chlorosis in Soybean. Retrieved from http://www.extension.umn.edu/agriculture/nutrient-management/micronutrients/managing-iron-deficiency-chlorosis-in-soybean/
How to Grow Kidney Beans, Guide to Growing Red Kidney Beans. (n.d.). Retrieved from http://www.heirloom-organics.com/guide/va/1/guidetogrowingredkidney.html
According to my data, plants with more iron than the usual amount found in ordinary soil will grow taller, but if too much iron is added it stunts the growth. This does not support my hypothesis. I thought that the more iron I added, the more my plants would grow. However, the results
showed an increase at the begining and then showed a decrease in growth when 15 and 20 rusty nails where added to the soil. Some things that could have hurt my experiment could have been that some of the rusty nails could have been rustier than others. Another extraneous variable is that the grow light that I used could be pointed more to one plant more than another. If I were to do my experiment over again I would test more than one plant for each level of IV. I would also try more than five levels of IV.
If the number of rusty nails in the soil of a kidney bean plant is increased, then the bean will grow faster and healthier because the iron in the rusty nails will help it grow.
1. Gather 60 nails (not stainless steal)
2. Fill a cup about two thirds full with bleach
3. Put all of the nails into the cup of bleach until all of them are being covered by bleach
4. Leave the nails in the bleach for 5 minutes until all of them are covered in a thin layer of rust and place them on a paper
towel to dry
5. Take a paper towel and pour water on it until it becomes moist.
6. Put the moist paper towel into the plastic container.
7. Place the 17 kidney beans on the moist paper towel evenly spread apart.
8. Fold the moist paper towel over until it is covering all of the beans.
9. Leave the container with the paper towel and beans in it by the window for 5 days until germinated
And remoisten every couple of days with the spray bottle.
10. After the beans have been germinated you should see small white beginning of a root.
11. Dig a small hole in the soil about an inch deep.
12. Place the germinated bean into the inch deep hole.
13. Push the soil back on top of the beans.
14. Repeat the proses of putting the germinated beans in the pots for the rest of the plants.
15. Push the right amount of nails (see IV levels) about half way into the soil
16. Put all five of the pots on to the tray.
17. Turn the grow light on and point it towards the plants.
18. Place the needle of the thermometer in the tray and make sure it reads 80 degrees.
19. Water each plant one and a half tablespoons in the morning and at night everyday.
20. Measure each plant in centimeters and record in notebook and take a picture.
Jolene Lower 806
day one (before rusty nails are put in
left- rusted nails
top middle- dried beans before germination
bottom middle- grow light
bottom right- germinated beans
Many old wives’ tales are simply superstition, but some of them actually contain some truth. One of these old wives’ tales is that if you put rusty nails in the soil of a plant it will grow faster and healthier. Rusty nails contain more iron than un-rusted one. Since iron is one of the minerals that help plants to grow, this could be the reason why a plant with rusty nails in its soil might grow faster. Rust occurs when iron or steel is exposed to water and oxygen. This happens naturally over time, but it is possible to speed up the rusting process by placing the nails in bleach for only a few minutes. Iron helps with plant photosynthesis and respiration. Iron is known as a micronutrient because plants usually don’t need much of it. Plants with iron deficiencies often show a yellowing of leaves and stunted growth. Extra enzymes are produced to protect the plant from this deficiency, while the stunted growth is caused by the failure of the plant to maintain homeostasis. When there is an excess of iron it can also cause problems. Toxicity is a surplus of iron, which causes a discoloration, and stippling of leaves. Stippled leaves show white and yellow small spots on the leaves of the plant. The discoloration is cause by feedback. Feedback is the process of sending messages throughout the organism to regulate the release of, in this case, enzyme production. It creates extra enzymes to control the amount of iron in it. Iron toxicity is not a very common problem. A healthy iron level in a plant is about 5.8. A plant with too much iron isn’t meant to have too much water because it causes a build up of carbon dioxide in the soil that is produced by the roots.
Dry kidney beans need to be germinated before they are planted. It works to keep them in a moist paper towel until they start to sprout. Then it is more likely that they will grow successfully in a pot. One sign of successful germination is that a small white beginning of a root called a “radicle” will begin to form. It is suggested to bury the germinated bean with the radicle facing downwards towards the bottom of the pot. They also require full sunlight, loose soil, and frequent but not heavy watering two to three times a week. Kidney beans don’t do well with “wet-feet” which means that they don’t do well with puddles at the bottom of their pots. This is why it is suggested to have a hole at the bottom of a pot to drain the excess water and to not pour water on the sprout or leaves when watering because this can cause mold. They also need to be buried about an inch in the soil and thrive in warm weather. It is suggested to keep kidney beans at about 70 degrees Fahrenheit. In the first week of being in a pot with soil the bean will begin to sprout and the brownish skin around the bean will begin to break. These beans will be ready to harvest in about 90 days and do not require that much fertilizer because they are usually able to produce enough nitrogen on their own.
As a kidney bean plant begins to grow after germination it will start out as a sprout. As it continues to grow the seed coat will dry up and fall off. This is because there is not as much of a need for the extra protection. Without the dark brown seed coat the actual bean is a bright green color. As the kidney bean plant continues to grow healthily the bean on the sprout will begin to split open. After a while, what’s left of the bean will shrivel up, turn a light brown color and fall off. The top of the plant should start to grow two leaves at the top. These leaves are meant to absorb sunlight and carbon dioxide. Tiny pours called stomata use guard cells that regulate the intake of carbon dioxide and release oxygen back into the air. As the plant continues to grow it will begin to grow more leaves until it is a full-grown kidney bean plant.
· Independent variable: number of rusty nails in the soil of a kidney bean
· Dependent variable: amount of bean growth (cm tall)
· Constants: approximate amount of rust on each nail, brand of soil, brand/kind of bean
(kidney), size of pot, amount of times watered per week/day, kind of water,
amount of sunlight, temperature, deepness buried in the soil
· Levels of the independent variable: 0 nails, 5 nails, 10 nails, 15 nails, 20 nails
· Trials: 1 plant for each level of IV