FAS offers a comprehensive analytical package for irrigation water. Also included in reports are interpretive guidelines on water quality.
It is important to test whether your source of irrigation water is suitable since high levels of dissolved salts and ionic imbalances may lower water quality. On-going monitoring of water quality is of importance in ensuring the sustainability of irrigation schemes. Accumulation of salts in the soil as a result of the use of poor quality irrigation water may give rise to saline and/ or sodic conditions which greatly reduce the production potential of land.
- Electrical conductivity (EC)
- Sodium adsorption ratio (SAR)
- Adjusted sodium adsorption ratio (ASAR)
- Effective electrical conductivity (EEC)
|ANALYSES||SA||SADC Countries||Other Countries|
|IRRIGATION WATER ANALYSES||Cost Per Sample|
|pH, potassium, calcium, magnesium, sodium, electrical conductivity (EC), sodium adsorption ratio (SAR), adjusted sodium adsorption ratio (ASAR), effective electrical conductivity (EEC).||R242.00||R268.00||R308.00|
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If sampling from a dam, collect the sample away from the edge and to a depth of at least of 30 cm. Samples from a stream or river should also be taken away from the edge, preferably in the running water. The sample bottle should be rinsed with the water to be sampled before filling.
Use a clean 250 – 500 mL sample bottle.