MadSci Network: Botany

Subject: Do plants grow more on a turntable?

Date: Sun Jan 8 13:12:59 2012
Posted by Charlie
Grade level: 7-9 School: Kent Middle School
City: Kentfield State/Province: California Country: U.S.
Area of science: Botany
ID: 1326053579.Bt

Do you agree that plant growth is decreased when a plant germinates and grows on 
a turntable spinning at 33rpm?

When I carried out this experiment recently I grew 3 super sugar snap pea plants 
on the turntable and 3 not on a turntable. All plants were separately  potted 
and under a fluorescent strip light overhead.
I measured each plant daily and recorded the results over a sixteen day period. 
I watered the plants evenly each day.
I measured stem growth vertically above soil level & total stem length.
I measured the root system at the end of the experiment. I measured the largest 
root stem length & the horizontal and vertical component growth ranges.

Re: Do plants grow more on a turntable?

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