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Soil Monitoring and Sampling Must know the objectives why to sample? What to sample for? When to sample? Number of soil sampling? Variability in sampling? From various soil depths – Objectives?
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Soil Monitoring and Sampling Must know the objectives why to sample? What to sample for? When to sample? Number of soil sampling? Variability in sampling?

Dec 23, 2015

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Page 1: Soil Monitoring and Sampling Must know the objectives why to sample? What to sample for? When to sample? Number of soil sampling? Variability in sampling?

Soil Monitoring and Sampling

• Must know the objectives why to sample?• What to sample for?• When to sample?• Number of soil sampling?• Variability in sampling?• From various soil depths – Objectives?

Page 2: Soil Monitoring and Sampling Must know the objectives why to sample? What to sample for? When to sample? Number of soil sampling? Variability in sampling?

Soil Monitoring

• What to sample for?

• NO3-N, pesticides, organic matter, metals, organics, pathogens, micro-organisms, N, P, K, micro-nutrients.

Page 3: Soil Monitoring and Sampling Must know the objectives why to sample? What to sample for? When to sample? Number of soil sampling? Variability in sampling?

When to Sample?

• Once a week, month, or year.

• As a function of cropping system or season.

• As a function of weather cycle.

Page 4: Soil Monitoring and Sampling Must know the objectives why to sample? What to sample for? When to sample? Number of soil sampling? Variability in sampling?

Number of samples per field – function of cost?

• Spatial variability.

• Minimum three samples per plot.

• Several depths.

• Composite to cut down cost.

Page 5: Soil Monitoring and Sampling Must know the objectives why to sample? What to sample for? When to sample? Number of soil sampling? Variability in sampling?

Soil Sampling Techniques

• Soil augers

• Soil probes

• Back saver

• Zero contamination tube

• Hydraulic probes

Page 6: Soil Monitoring and Sampling Must know the objectives why to sample? What to sample for? When to sample? Number of soil sampling? Variability in sampling?

Problems During Soil Sampling and Transportation

• Cross-contamination

• Separation, collection

• Storage, transportation, temperature control

• Timely analyses in lab

• Laboratory techniques/interpretation

Page 7: Soil Monitoring and Sampling Must know the objectives why to sample? What to sample for? When to sample? Number of soil sampling? Variability in sampling?

Quantity Control/Quality Assurance

• Sending duplicate samples to recognized laboratories

• Manual on laboratory procedures

• All steps on how to collect soil samples and lab analyses.

Page 8: Soil Monitoring and Sampling Must know the objectives why to sample? What to sample for? When to sample? Number of soil sampling? Variability in sampling?

Water Quality Monitoring

• Point sources of pollution (manure storage platforms, spills)

• Non point sources (agriculture)

Page 9: Soil Monitoring and Sampling Must know the objectives why to sample? What to sample for? When to sample? Number of soil sampling? Variability in sampling?

Monitoring Needs

• Surface water

• Groundwater

Page 10: Soil Monitoring and Sampling Must know the objectives why to sample? What to sample for? When to sample? Number of soil sampling? Variability in sampling?

Surface water Monitoring• Field runoff

• Open ditches/drains

• Irrigation canals

• Ponds/Lakes/reservoirs

• Wetlands

• Streams, rivers (Danube River)

• Ocean, Sea (Black sea)