Science Fair

Question

Which liquid will make grass grow the fastest?

Hypothesis

I think that fertilizer 2 will grow the fastest because it has a lot fertilizer in the water.

Procedure

First, I labeled the cups with 1. water, 2. Mountain Dew, 3. Fertilizer 1, and 4. Fertilizer 2. I poked holes in the bottom so the liquid could come out. I filled the cups with potting soil that had no fertilizer. I planted 1 teaspoon of grass in each cup. Then I stirred the grass seed into the soil and packed it down a little. Next, I had to mix the solutions. For Fertilizer 1 I put one packet of Miracle Grow in one gallon of water. For Fertilizer 2 I put two packets of Miracle Grow in one gallon of water. I watered them with 1/2 cup of liquid the first day and then when they got dry (about every 3 days) for a total of 9 days.

Data

First, I watched for which one would come up first. The water sample came up first on day three and was the tallest for the first two days. Then Fertilizer 1 took off and was very thick and grew faster and was taller than all the others. Fertilizer 2 came up shortly after Fertilizer 1, but was a lot thinner and never grew very tall or thick. Mountain Dew never came up the whole experiment.

Tuesday, 4/26

-grass planted and liquid given

Wednesday, 4/27

-no grass is growing, soil is wet

Thursday, 4/28

-a few spikes of grass have grown in the water (.5 cm), Fertizilizer 1 has just started, and Fertilizer 2 has hardly grown, Mountain Dew has not grown at all

-soil still damp

Friday, 4/29

-water has grown is at .25 - 1 cm

-Mountain Dew has not grown

-Fertilizer 1 is 0-.5 cm

-Fertilizer 2 is 0-.25 cm

Saturday, 4/30

-water is .5-3 cm, even and thick

-Mountain Dew has not grown

-Fertilizer 1 is .1-3.5 cm, grass is more even now, more than water

-Fertilizer 2 is .25-2 cm adn thinner

Sunday, 5/1 (watered all with their liquid)

-water is 2-4 cm

-Mountain Dew has no growth

-Fertilizer 1 is 2-5 cm, more growth than water

-Fertilizer 2 is .5-3 cm, very uneven and thin

Monday, 5/2

-water is 4-6 cm

-Mountain Dew has not grown

-Fertilizer 1 is 5-7 cm

-Fertilizer 2 is 3-5 cm

Tuesday, 5/3

-water is 7-9 cm

-Mountain Dew is 0

-Fertilizer 1 is 8-9 cm

-Fertilizer 2 is 4-7 cm

Wednesday, 5/4

-water is 9-10 cm

-Mountain Dew is 0 cm

-Fertilizer 1 is 10-11 cm

-Fertilizer 2 is 8-9 cm

Thursday, 5/5 (watered all with their liquid)

-water is 10-11 cm

-Mountain Dew is 0 cm

-Fertilizer 1 is 11-13 cm

-Fertilizer 2 is 8-10 cm

Friday, 5/6

-water is 10-11 cm

-Mountain Dew is 0 cm

-Fertilizer 1 is 12-14 cm

-Fertilizer 2 is 8-10 cm

Conclusion

The fastest to start growing was the water, but the tallest and thickest growing was Fertilizer 1. So if you are going to grow grass, using water to start the grass growing and then watering it with Fertilizer 1 would give you the best result.