Soil samples were collected from various depths using different tools like screw augers, barrel augers, sampling tubes, mud augers, and peat samplers. The samples were then prepared into a composite sample by combining subsamples from each depth for analysis. Proper collection and processing of soil samples is important for accurate analysis.

1. Collection and processing of soil
samples for analysis

2. Collection and processing of soil
samples for analysis
g

3. Depth of sampling

4. Preparation of composite sample
h

5. A. Screw Auger
B. Barrel auger
C. Sampling tube
D. Mud auger
E. Peat sampler
F. Post hole auger