Extended Essay (Biology)
Supervisor: Şirin GÜNTÜRKÜN
Candidates Name: Deniz SAVCIÖZEN
Candidates Number:D1129035
Word Count: 3856
Index
Abstract ……………………………………………………………………………………. 2
Introduction ……………………………………………………………………………….. 3
Hypothesis ………………………………………………………………………………… 5
Method Development and Planning ……………………………………………………….. 7
Diagrams ………………………………………………………………………………….. 11
Method ……………………………………………………………………………………. 12
Results …………………………………………………………………………………….. 14
Conclusion and Evaluation ……………………………………………………………….. 18
Appendices…………………………………………………………………………………21
Abstract
As the global warming threatens the word, the water sources consume and fertile lands exhaust scientists try to find new solutions to hunger. Soilless farming (hydroponics) is one of those solutions; soil becomes unnecessary in agriculture by that process. Other materials such as perlite, gravel, clay or Styrofoam is used instead of soil. Fe is an indispensable matter for plant grows as it takes place in chlorophyll synthesis reactions. Therefore it must be given to plants in an optimum ratio and different amount of Fe will cause different results in a plant. The objective of the study is to investigate whether are the different amounts of Fe effective at increasing the growth rate of Solanum lycopersicum, during soil less farming or not? During the experiment Fe element was given to plants within the water. Three groups developed, one of them does not contain any Fe whereas one group contains 2 mg per liter and the last one 5 mg per liter. The plants irrigated daily and observed five months in order to see the effects of different amounts of Fe element by taking measurements of the stem length and observing the color and amount of tomatoes produced.
It was found that there comes a significant difference if the amount of Fe changes during soilless