I NEED SOME ONE\'S HELP PLEASE . I need images too uploaded with this lab or sen
ID: 234650 • Letter: I
Question
I NEED SOME ONE'S HELP PLEASE . I need images too uploaded with this lab or send it to my email address. $150.00 dollars if completed correctly and images of jars and site taken properly
Lab Assignment Manual
Lab 1—Soil Composition
In this exercise, you will determine the soil composition at three different locations in your local area. You will compare soil composition at sites that have different topography, and (possibly) different vegetation.
Materials
small spade or shovel
3 glass jars (approximately 1 L in volume)
permanent marker
ruler
Instructions
Choose sites for the following samples:
hill sample, taken from the side of a hill (the steeper the better)
yard sample, taken from a level surface (e.g., backyard)
river bank sample, taken from the side of a creek or river
Collect a soil sample from each site, and place each sample in a separate jar. You only need to fill each jar approximately one-third full of soil. Label each jar with its contents (source), using a permanent marker.
Record the slope and types of vegetation at each site. Take a digital photograph of each site.
Add water to the soil in the jars until each jar is almost full (leave an air space). Shake each jar vigorously and then let the jars sit undisturbed for a full day (24 hours).
Layers of clay, silt, and sand should be visible. Clay will be the top layer, silt will be the middle layer, and sand will be at the bottom. Any small rocks or pebbles will be at the very bottom of the sand layer.
IMPORTANT: Take a digital photograph of each jar, to show the layering.
Measure the depth of each layer with a ruler, in millimeters, and record your data in a table that looks like this:
hill sample
yard sample
riverbank sample
total depth (mm)
depth of clay (mm)
depth of silt (mm)
depth of sand (mm)
% sand
% silt
% clay
soil type
Note: If your layers are not very clear, you may want to try shaking the sample again, or start over. If there is too much soil in the jar to begin with, it is more difficult to generate a homogeneous slurry when you shake the jar.
For each sample, calculate the percentage of each soil component and record it in the table above.
Identify the type of soil by matching the percent soil components in the soil texture triangle found at the link below. Record each soil type in the table. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/home/?cid=NRCS142P2_054167
Report
Your report should consist of the following components:
A brief introductory statement (i.e., what were you investigating?)
A short description of each site, with digital photos of each site
The soil composition table with your results
Digital photos of the settling jars
A discussion of the results. Explain any variation in soil composition among the three sites. How does topography appear to affect soil composition?
hill sample
yard sample
riverbank sample
total depth (mm)
depth of clay (mm)
depth of silt (mm)
depth of sand (mm)
% sand
% silt
% clay
soil type
Explanation / Answer
The answer must be based on the practical work on the field and inferences are to be drawn accordingly and results to be calculated.Based on the observations and inferences drawn the answer can be justified.
Vegetation,topography,cropping and tilling practices world wide cause variations among soils. Vegetation affects the structure of soil especially after harvest of crops. In the lower areas,soil is mostly eroded from the hill tops and ridges and deposited in the valleys and lower areas. Composition of the soil is affected due to the distribution of soil nutrients.
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