Part I: Soil Texture
My sand is not working well, it still have some sand on top it not falling down like the other group. So Mr. Ogo tell me to tell it over break to see what happen.
Part II: Soil pH
1. Use the soil triangle to determine the type of soils with the following particle sizes
a. 20% silt, 10% clay, 70% sand =>Sandy Loam
b. 30% sand, 10% clay, 60% silt => Silt Loam
c. 10% silt, 50% sand, 40% clay=> Sandy Clay
d. 30% clay, 30% sand, 40% silt =>Clay Loam
e. 60% clay, 10% sand, 30% silt=> Clay
f. 40% sand, 10% silt, 50% clay=> Clay
2. List and describe three ways in which soil pH affects an ecosystem.
Reduction of bacteria - the nutrient release
Affects plant growt - the plants only survive in the pH closest to the neutral
Plants that can survive in low pH could dominate the land around them
3. What types of vegetation does soil of the type and pH you sampled best support?
6.5 my group concluded that we can only support grass.
4. What would be the ideal type and pH of soil to have around a home?
loam and pH at 6.0-7.5
5. What would be the ideal type and pH of soil for agriculture?
loam and pH at 6.5-7.5
6. How do farmers adjust the pH of soils?
Farmers put either limestone or sulfur into the soils to neutralize.
Part III: Classification of Soil Texture by Hand
A: Using the method described above, try to classify your soil as mostly sand, mostly silt or mostly clay. How did you classify your soil based on this “by hand” method? What lead you to this conclusion?
The soil is silt loam, we know it because this soil based on the fact that the soil can easily deformed ball and feel smooth and silky.
B: Now use the dichotomous key to classify your soil. What soil texture would you classify your sample based on this method?
Based on this method we would known our sample as silt loam.
C: Do it again with the flow diagram- how would you classify your soil now?
The classification of the soil was silk loam.
D: Did your answers to all of the methods agree with each other? Why or why not?
Yes, because the the flow diagram and dichotomous key each concluded that the soil that we used in this lab was silk loam.
Conclusion:
After doing this lab, I conclude that the sand I experience that at Thanh Thanh Thai garden is silk loam. The way I experience is that I weigh out 20g of the soil that at home and put it in a 100-ml beaker. And I add 40 mL of distilled water and stir for 30 sec every 3 min for 15 min. After the final stir of the soil mixture, I remove the fork, and allow the mixture to settle for 5 min. And lastly measure and record the pH of the liquid phase of the soil water mixture using the pH test. While waiting I answer the queestion on part III, and the final answer is silt loam. Not done, I still have to do the soil texture by fell flow chart on the last page. Not surprise, the answer still silt loam.
My sand is not working well, it still have some sand on top it not falling down like the other group. So Mr. Ogo tell me to tell it over break to see what happen.
Part II: Soil pH
1. Use the soil triangle to determine the type of soils with the following particle sizes
a. 20% silt, 10% clay, 70% sand =>Sandy Loam
b. 30% sand, 10% clay, 60% silt => Silt Loam
c. 10% silt, 50% sand, 40% clay=> Sandy Clay
d. 30% clay, 30% sand, 40% silt =>Clay Loam
e. 60% clay, 10% sand, 30% silt=> Clay
f. 40% sand, 10% silt, 50% clay=> Clay
2. List and describe three ways in which soil pH affects an ecosystem.
Reduction of bacteria - the nutrient release
Affects plant growt - the plants only survive in the pH closest to the neutral
Plants that can survive in low pH could dominate the land around them
3. What types of vegetation does soil of the type and pH you sampled best support?
6.5 my group concluded that we can only support grass.
4. What would be the ideal type and pH of soil to have around a home?
loam and pH at 6.0-7.5
5. What would be the ideal type and pH of soil for agriculture?
loam and pH at 6.5-7.5
6. How do farmers adjust the pH of soils?
Farmers put either limestone or sulfur into the soils to neutralize.
Part III: Classification of Soil Texture by Hand
A: Using the method described above, try to classify your soil as mostly sand, mostly silt or mostly clay. How did you classify your soil based on this “by hand” method? What lead you to this conclusion?
The soil is silt loam, we know it because this soil based on the fact that the soil can easily deformed ball and feel smooth and silky.
B: Now use the dichotomous key to classify your soil. What soil texture would you classify your sample based on this method?
Based on this method we would known our sample as silt loam.
C: Do it again with the flow diagram- how would you classify your soil now?
The classification of the soil was silk loam.
D: Did your answers to all of the methods agree with each other? Why or why not?
Yes, because the the flow diagram and dichotomous key each concluded that the soil that we used in this lab was silk loam.
Conclusion:
After doing this lab, I conclude that the sand I experience that at Thanh Thanh Thai garden is silk loam. The way I experience is that I weigh out 20g of the soil that at home and put it in a 100-ml beaker. And I add 40 mL of distilled water and stir for 30 sec every 3 min for 15 min. After the final stir of the soil mixture, I remove the fork, and allow the mixture to settle for 5 min. And lastly measure and record the pH of the liquid phase of the soil water mixture using the pH test. While waiting I answer the queestion on part III, and the final answer is silt loam. Not done, I still have to do the soil texture by fell flow chart on the last page. Not surprise, the answer still silt loam.