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 GraphData Graph

0

5

10

15

20

25

30

11/15/2010 11/17/2010 11/19/2010

Compost

Soil

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.