Effects of Allelopathy on Plants: Controlled Experiment
Effects of Allelopathy on Plants
Dates experiment was conducted:
Purpose: The purpose of this experiment is to design a controlled experiment to see if a plant could survive living in eucalyptus tea.
Allelopathy is when a plant gives off a bio-chemical that kills that plants around it, such as eucalyptus trees, black walnut trees, etc. My class went to the a eucalyptus grove and observed the eucalyptus trees. We noticed that there was a small circle around the tree that had nothing growing on it and we noticed that there were so many leaves that any living thing under there would be soaking in eucalyptus tea after it rained. We set up the experiment by having petri dishes and labeling them on the bottom so they won’t get mixed up. It was very easy to set up. We just had to make the tea from the leaves we got from the eucalyptus trees, since it was a known allelopathic plant. We had 2 of the same things grow in different liquid, so that one was normal and the other wasn’t and we could see the effect it had on the mung beans. We chose the mung beans because they grow fast and are a very hardy.
Hypothesis: If the mung bean is in eucalyptus tea, then I think that they won’t grow as much because eucalyptus is known to be very allelopathic and not many plants could survive such conditions.
Materials:
20 mL of water
20 mL of eucalyptus tea
20 grams of sand
4 mung beans
4 petri dishes (bottoms and tops)
2 cotton balls
1 window sill
Procedure:
We put 20 grams of sand for 2 petri dishes and 2 cotton balls per 2 petri dishes, then we added 20 mL of eucalyptus tea for 2 petri dishes, one for sand and one for cotton, which will be the experimental group . The other group without the tea had 20 mL of water per 2 petri dishes, one for sand and one for cotton, which was the control group. We covered the petri dishes, and put them on a sunny window sill and took them off for an hour a day measuring them, until day 4 when we added 5 more mL of their own liquid
Dates experiment was conducted:
Purpose: The purpose of this experiment is to design a controlled experiment to see if a plant could survive living in eucalyptus tea.
Allelopathy is when a plant gives off a bio-chemical that kills that plants around it, such as eucalyptus trees, black walnut trees, etc. My class went to the a eucalyptus grove and observed the eucalyptus trees. We noticed that there was a small circle around the tree that had nothing growing on it and we noticed that there were so many leaves that any living thing under there would be soaking in eucalyptus tea after it rained. We set up the experiment by having petri dishes and labeling them on the bottom so they won’t get mixed up. It was very easy to set up. We just had to make the tea from the leaves we got from the eucalyptus trees, since it was a known allelopathic plant. We had 2 of the same things grow in different liquid, so that one was normal and the other wasn’t and we could see the effect it had on the mung beans. We chose the mung beans because they grow fast and are a very hardy.
Hypothesis: If the mung bean is in eucalyptus tea, then I think that they won’t grow as much because eucalyptus is known to be very allelopathic and not many plants could survive such conditions.
Materials:
20 mL of water
20 mL of eucalyptus tea
20 grams of sand
4 mung beans
4 petri dishes (bottoms and tops)
2 cotton balls
1 window sill
Procedure:
We put 20 grams of sand for 2 petri dishes and 2 cotton balls per 2 petri dishes, then we added 20 mL of eucalyptus tea for 2 petri dishes, one for sand and one for cotton, which will be the experimental group . The other group without the tea had 20 mL of water per 2 petri dishes, one for sand and one for cotton, which was the control group. We covered the petri dishes, and put them on a sunny window sill and took them off for an hour a day measuring them, until day 4 when we added 5 more mL of their own liquid