What are the standards for anions in water for irrigation? Can you recommend any paper? Thank you.
There are some standards in FAO No.47 paper for irrigation water
Usually each country presents their parameters.
You should look your country legislation. Country name?
Payman Hassan, I made a small research in web since today i don't have access to article published in the scientific journals, but you can start by here if you don't know these publications:
http://www.fao.org/nr/water/aquastat/countries_regions/malaysia/index.stm
http://www.eoearth.org/view/article/154390/
http://thescipub.com/PDF/ajessp.2009.413.419.pdf
...
You have also several research groups (chemistry, Department of Crop Science, Institute of Tropical Agriculture) that may can help you.
E.I.L. Siva, 2004. Quality of irrigation water in Sri Lanka- status and trends. Asian J. wat. Environ. Pollutn. 1: 5-12.
http://www.environmental-expert.com/Files%5C0%5Carticles%5C9660%5CQualityofIrrigationWaterinSriLanka.pdf
Standard anions in freshwater are bicarbonate, chloride, sulphate and carbonate, which are resoinsible fore ionic balance and osmotic pressure. The composition and hierarchical order is different in seawater.The other anions oxidized nitrogen and phosphorous are minor importance to the ionic balance and osmotic pressure although they are important micro nutrients for plants.
major anions in water sulfate, chloride, bicarbonate and carbonate
Please refer the water quality on irrigation on specific type of soil & crop
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