What are the standards of irrigation water?

There are four basic criteria for evaluating water quality for irrigation purposes: Total content of soluble salts (salinity hazard) Relative proportion of sodium (Na+) to calcium (Ca2+) and magnesium (Mg2+) ions – sodium adsorption ratio (sodium hazard)

What are the two important standards for irrigation water?

pH and Alkalinity Alkalinity and pH are two important factors in determining the suitability of water for irrigating plants. pH is a measure of the concentration of hydrogen ions (H+) in water or other liquids. In general, water for irrigation should have a pH between 5.0 and 7.0.

What is TDS in irrigation water?

TDS means total dissolved solids, reported in milligrams per litre (mg/l). 3. SAR means sodium adsorption ratio.

What is the maximum EC or salt concentration for water to irrigation?

0.6 to 1.7dS/m The quality of the irrigation water plays an essential role in arid areas affected by high evaporation rates and cause high concentrations of salt accumulating in the soil. In general water reuse for irrigation purposes must have a low to medium salinity level (i.e. electrical conductivity of 0.6 to 1.7dS/m).

What is the pH of irrigation water?

from 6.5 to 8.4 The normal pH range for irrigation water is from 6.5 to 8.4. An abnormal value is a warning that the water needs further evaluation. Irrigation water with a pH outside the normal range may cause a nutritional imbalance or may contain a toxic ion.

What is SAR in water quality?

SAR is the sodium adsorption ratio, which indicates a possible sodium hazard. It relates the amount of sodium relative to calcium and magnesium in water. When the SAR is >3, the water is sodic, and can increase the exchangeable sodium percentage (ESP) of the soil.

How can reduce TDS?

Reverse Osmosis Using an RO water purifier can be the best solution to reduce drinking water TDS. RO reduces TDS by forcing water through a fine membrane with microscopic pores which eliminates even the smallest of particles. All that can pass through are atoms smaller than 0.0001 microns.