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The effect of irrigation with fish-breeding pond water on soil properties

Country:Oman
Student(s):Jomana Jamal Alfarsi Rahaf Thowaini Alfarsi
Grade Level:Middle School (grades 6-8, ages 11-14)
GLOBE Teacher:hedaya alfarsy
Contributors:
Report Type(s):International Virtual Science Symposium Report
Protocols:Conductivity, Dissolved Oxygen, Salinity, Water Temperature, Water Transparency, pH, Soil Characterization
Presentation Poster: View Document
Optional Badges:I am a Collaborator, I am a Data Scientist, I work with a STEM Professional
Language(s):English
Date Submitted:03/09/2020
Our research aims to study the effect of irrigation with fish-breeding pond water on soil properties. We raised the following questions: 1 - What is the impact of fish waste on the properties of water? 2 – How do soil properties (acidity, salinity and conductivity) get affected when irrigating with the fish-breeding pond water? To answer the first question, we applied water protocol on two samples of water. One before adding the fish to the water pond and the other after adding the fish. In addition, to answer the second question, we have collected soil samples before adding fish to the water pond and then two months after adding fish to the pond .We applied soil protocol to study the properties of each sample, in terms of acidity, salinity and conductivity. The results indicated that the properties of the water change in terms of Ph, salinity and conductivity. The reason behind that is due to fish waste that contains mineral elements, which led to an increase in salinity and conductivity of the pond water. Moreover, the percentage of dissolved Oxygen increased from 2 to 8 due to the growth of algae in the pond water, which produces large quantities of Oxygen. Furthermore, the soil properties changed after adding fish to the pond water, it became less salty and arable land due to the nutrients found in fish waste. Therefore, we recommend adopting this method in line with hydroponics in order to rationalize water consumption and use fish wastes as an alternative to chemical fertilizers. Key terms: - Fish waste: is the organic matter that fish excrete in water. - Aquaculture: is the practice of fish farming together with the cultivation of plants in water without soil.



Comments

This is a really interesting project. I didn't think that fish would make that much of a difference in the pond water. Some of the questions I have are How big is the pond? How many fish were added? What were the dates of the experiment - would you get the same result if you did it a different time of year?
Sorry, I see that you did your project from December to January. I shouldn't have asked the question about the dates of the experiment.
Thank you for your comments
The answers for your quetions are :the pond is 4m length, 3m wedth and 2m depth.
We add 30 fish to the pond
We add fish on October and see result on December
We think we will get the same result if we did the experiment at any time in the year
The fish extract is rich with minerals so it can change the properties of soil as firtelizers do.