The purpose of this experiment was to determine if a pineapple (Ananus comosus) could be regenerated from its crown more effectively in rich soil, sand, or water. I became interested in this idea because Ive always liked to do experiments that involve plants and that have something to do with real life. When my mom explained to me that pineapple could be grown from their crowns I knew I wanted to explore this further. The information gained from this experiment may
help pineapple growers produce their crops more efficiently and help use
the least amount of materials that are needed such as water, sand, and
soil.
My hypothesis is that the pineapple (ananus comosus) will grow much faster and be healthier in rich soil than if you grow the pineapple in water or sand. I base my hypothesis on research that I gained
about the pineapple (ananus comosus) on the Internet.
The constants in this study were:
The manipulated variable was the type of growing medium in each group. The responding variable was the length of the roots of the pineapple. To measure the responding variable I would use
a millimeter ruler to measure the length of the roots every week.
1. Gather the materials needed such as pineapple crowns, soil, water, fertilizer, camera, 16 pots, and sand. 2. Take four pots and place 500 ml of potting
soil in them. Label them "Soil
3. Do this step with 4 more pots using 500 ml water instead of soil. Label. 4. Repeat this process with sand and with potting soil, but both of these groups also receive 7 grams of fertilizer per pot. Label. 5. Take pictures while you are doing the experiment groups and procedures. 6. Then put 1 crown into each pot 6 cm deep in the soil. 7. Let the crowns in the pots full of water sink to the bottom of their pots. 8. Water plant groups every 3 days. 9. Take observations every week using millimeters to measure the length of the roots. 10. Write observations in project log recording
the date and what you did for that day.
The original purpose of this experiment was to determine if the pineapple (Ananus comosus) germinated more effectively in rich soil rather than sand or water. The results of this experiment were that the pineapple grew more effectively in water than in potting soil, or in sand or soil containing fertilizer. See the graph below.
My hypothesis was that the pineapples would grow much faster and healthier in rich soil than if you grow them in water or sand. The results indicate that this hypothesis should be rejected. The pineapple roots grew much faster in water than in rich soil or sand. Because of the results of this experiment, I wonder if this experiment was repeated would the group with water grow faster than all the other groups as it did this time. A second question is whether as the plants mature would those grown in soil or with fertilizer surpass the water group. The usefulness of my findings would help pineapple producers start their crops much faster in water and that would help them produce more pineapples. If I were to conduct this project again I would
try to place the pineapples in a green house to keep the soil moist.
I would also try to grow them at a higher temperature, like 80° or
90° F., because that would be more natural. I would also change my
procedures in which I wouldnt have to take the pineapples out of the soil
or sand until the experiment was all finished.
Menu of 1999-2000 Science Projects
|
Attribution: This is a cached copy of a third party project. Many of these sites are from 20 years ago and the majority are no longer running. We show only the first page of the project. We do not save all pages since copyright belongs to the third-party author.
Science Project