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Compost vs. Soil. Jillie Galasso & Emily Braddock Robert Louis Stevenson Middle School Advanced 7 th period, 6 th grade Mr. Pham 2010. Introduction. Background Information: Compost is an over layer, not a soil. 20-33% of potting soil is compost - PowerPoint PPT Presentation
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Jillie Galasso Jillie Galasso &&
Emily BraddockEmily BraddockRobert Louis Stevenson Robert Louis Stevenson
Middle SchoolMiddle SchoolAdvanced 7Advanced 7thth period, 6 period, 6thth grade grade
Mr. Pham 2010Mr. Pham 2010
IntroductionIntroduction
Background Information:• Compost is an over layer, not a soil.• 20-33% of potting soil is compost• The green beans should be in sun and
watered everyday Hypothesis:• Our hypothesis is if you grow green
beans in soil it will grow faster then green beans in compost.
Introduction Introduction (continued)(continued)
Controlled variables:• Amount of soil/compost• Amount of water• Plants• Same environment Experimental variables:• Soil• Compost
MaterialsMaterials• Two green bean
seeds• 118.3 cc of soil• 118.3 cc of
compost• 59.15 cc of water
for each• 2 pots
ProcedureProcedure• Pour compost into 1 of the pots• Pour soil into 1 the pots• Stick a finger in each pot to make a hole • Open the bag of green bean seeds • Put two seeds in each hole • Cover the seeds with soil for the pot with
soil in it • Cover the seeds with compost for the pot
with compost in them
Observation & DataObservation & DataDate 11/15 11/17 11/20
Compost
Measured by Height!!
2½ cm. 3½ cm. 14½ cm.
Soil
Measured by Height!!
10 cm 18 cm. 26 cm.
Data AnalysisData Analysis
• We took 2 pots, one with soil and one with compost. 2 seeds in each pot to grow.
• We watered it every day, and it grew!Patterns:• Compost: grew 1.5” every other day. Then
on the last day it grew 11.5”.• Soil: it grew 8” every other day.Observation:• We had it at Emily's house for most of the
time, then Jillie took it to her house the compost grew 3 times more than at Emily's house.
ConclusionConclusionOur hypothesis was correct! If we
grew the compost before we grew the soil maybe it would have grown better. We have discovered that people should not use compost as potting soil for green beans.
• Compost As A Potting Soil. 12/1/10.Compost As A Potting Soil. 12/1/10.
http://www.p2pays.org/ref/05/04068.pdfhttp://www.p2pays.org/ref/05/04068.pdf
• Green Beans N’ More. 12/1/10.Green Beans N’ More. 12/1/10.
http://www.greenbeansnmore.com/how-thttp://www.greenbeansnmore.com/how-to-grow-green-beans.htmlo-grow-green-beans.html
Emily and Jillie would like to thank…..Emily and Jillie would like to thank…..
• Mr. Pham for helping us with the Mr. Pham for helping us with the PowerPoint PowerPoint
• Our parents for us buy the materials, and Our parents for us buy the materials, and letting us work at each others houses. letting us work at each others houses.