In today’s experiment we have one of our volunteers, Tiffany, show us how to wake up plants with coffee! Used coffee grounds containing the essential plant nutrients nitrogen, phosphorus and potassium, are applied as a fertilizer to enhance mung bean plant growth over the course of a week. This concept of adding additional essential nutrients is widely used in agriculture to increase the productivity of crops. For this experiment you’ll need used coffee grounds, soil, 3 cups or flower pots, water, 3 lentil/mung/kidney/broad beans, pencil, paper, and a ruler. You can skip ahead to 0:16 to jump straight to the experiment!
For pot 1 (only soil condition):
-day 1-5: 0 cm
-day 6: 0.7 cm
-day 7: 4.3 cm
For pot 2 (grounds on top):
-day 1-2: 0 cm (note: plant sprouted on day 2)
-day 3: 0.5 cm
-day 4: 3.5 cm
-day 5: 4.3 cm
-day 6: 5 cm (new leaves growing)
-day 7: 5.8 cm
For pot 3 (Grounds mixed in):
-day 1-2: 0 cm (note: plant sprouted on day 2)
-day 3: 2.3 cm
-day 4: 4.3 cm
-day 5: 4.5 cm
-day 6: 5 cm (new leaves growing)
-day 7: 5.3 cm
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► Pueblo Science Website: puebloscience.org
► Donate to Pueblo Science to help make science accessible: puebloscience....
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► Gift our E-book to a child: puebloscience....
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Pueblo Science is a Toronto-based charity dedicated to advancing science education and developing alternative teaching kits that are engaging and fun for children, while still being inexpensive, and can be locally reproduced by science educators in underserved communities around the world.
This video was made with the support of the Ontario Trillium Foundation. Learn more at: www.otf.ca/
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