What about water?Is there any difference between properties of qanat's water and well's water?(chemical or biological?)
Very interesting question. Depending upon the ionic composition and EC of two diverse irrigation sources , there could be a possibility to leave changes in soil ohysicochemical and biological properties as a function of particle size distribution , OC and hydraulic properties. That could be a fascinating exercise to investigate...
Atef Nassar Omar Ali Al-Khashman Anoop Kumar Srivastava Thanks a lot all of you. currently i'm working on this matter. i'll send the Preprint of my study soon.
Thank you.It will be still fascinating to see , how difference in quality of irrigation water brings difference in crop performance, crop quality and soil health , besides to what an extent , nutrients requirement of crop is met through irrigation water..? Any study I guess...??
Greetings
Qanat water basic chemical structure is like any other water resources. They are all H2O. Historically, the engineers choose the right locations to gather the qanat water and direct it to ground level for drinking and irrigation purposes. The right location means proper soil structure and stratification, avoiding the salty soil layers, and right slope. Therefore, historically, qanat waters were of very good quality waters, good enough even for drinking. However, now a days, some of these old qanats has been disturbed either anthropologically or naturally (due climate change, etc), which has caused either drying out of the qanat or changed its quality. I have seen some qanats in Yazd province (Iran) that either were dried or became saline, due to extensive well drilling in the area.
In regards to comparison with well water and soil properties, it really depends on the quality of the ground water aquifer. Engineers choose the good quality rain water for collection and diversion to an area in Qanat, while in the case of Wells, the water is stored in the aquifer and the quality maybe good or maybe poor. If the quality of the qanat and well waters are similar (especially salinity, and contaminants), then theoretically would have similar effects on soil quality (if the irrigation management is the same too).
best wishes
Can you recommend me a journal for publishing my study about this topic?
Applied Soil Ecology, Agricultural Water Management , Arid Land Reclamation etc....
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