Soil Sampling Method
Soil Sampling Method - Related Videos
17:39
A Lipid Extraction and Analysis Method for Characterizing Soil Microbes in Experiments with Many Samples
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Cited by 21 •
2017
The article describes a method that increases throughput while balancing effort and accuracy for extraction of lipids from the cell membranes of microorganisms for use in characterizing both total lipids and the relative abundance of indicator lipids to determine soil microbial community structure in studies with many samples.
07:16
Comparison of Methods for Isolating Entomopathogenic Fungi from Soil Samples
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Cited by 11 •
2022
Entomopathogenic fungal colonies are isolated from tropical soil samples using Tenebrio bait, Galleria bait, as well as selective artificial medium, i.e., potato dextrose agar enriched with yeast extract supplemented with chloramphenicol, thiabendazole, and cycloheximide (CTC medium).
07:11
Sampling Soils in a Heterogeneous Research Plot
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Cited by 27 •
2019
The traditional soil-sampling procedure determines the number of soil samples arbitrarily. Here, we provide a simple yet efficient clustered soil-sampling design to demonstrate soil spatial heterogeneity and quantitatively determine the number of soil samples required and the associated sampling accuracy.
09:16
Methods of Soil Resampling to Monitor Changes in the Chemical Concentrations of Forest Soils
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Cited by 19 •
2016
Repeated soil sampling has recently been shown to be an effective way to monitor forest soil change over years and decades. To support its use, a protocol is presented that synthesizes the latest information on soil resampling methods to aid in the design and implementation of successful soil monitoring programs.
10:57
Culturing and Enumerating Bacteria from Soil Samples
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2023
Source: Laboratories of Dr. Ian Pepper and Dr. Charles Gerba - The University of Arizona Demonstrating Authors: Bradley Schmitz and Luisa Ikner Surface soils are a heterogeneous mixture of inorganic and organic particles that combine together to form secondary aggregates. Within and between the aggregates are voids or pores that visually contain both air and water. These conditions create an ideal ecosystem for bacteria, so all soils contain vast populations of bacteria, usually over 1 million...
FAQs
A representative sample should reflect the chemical, physical, and biological conditions of the site or area being studied. Sampling locations, depths, and patterns therefore need to match the environmental question. If these choices do not capture site variability, measurements of nutrients, pH, moisture, texture, metals, or organic contaminants may not accurately describe actual soil conditions.
Location, depth, and spatial pattern determine which parts of a site contribute to the analytical results. Researchers can select these elements to characterize particular site conditions rather than treating all soil as uniform. Consistent choices also make results more comparable across areas or sampling events, which supports pollution assessment, remediation planning, and monitoring environmental change.
Cross-contamination can transfer soil or contaminants between sampling locations, changing the composition of subsequent samples. Using appropriate tools and handling practices helps preserve the original sample condition. This is especially important when analyzing metals or organic contaminants, because contamination introduced during collection or handling could distort the apparent distribution of pollutants and affect environmental risk evaluations.
Augers, corers, and shovels are identified as common tools for collecting soil samples. The selected tool should support the planned sampling depth and location while allowing the sample to remain suitable for analysis. Tool choice is therefore connected to the sampling design, sample integrity, and the type of chemical, physical, or biological information required.
Begin by defining the locations, depths, and sampling pattern needed to characterize the site. Collect soil with an auger, corer, or shovel, while applying consistent procedures across sampling points. Prevent cross-contamination during collection and preserve sample integrity during handling. The resulting samples can then support analysis of nutrients, pH, moisture, texture, metals, or organic contaminants.
Soil sampling supports soil-quality assessments, pollution identification, remediation decisions, and monitoring of environmental change. It can also provide information for evaluating risks to ecosystems and human health. By linking a consistent sampling design with measurements such as pH, nutrients, metals, and organic contaminants, investigators can relate soil conditions to environmental management needs.