Is it possible to use sea water for irrigation ?
Should we necessarily desalinate it before using it, or it can be used directly?
- energyconsciousLv 42 months ago
It is very expensive to desalinate as even Reverse Osmosis units have 40-45% recovery and generate lot of concentrated waste water whose disposal is a problem.
It is necessary to desalinate the water.
Look at rain-water capture and storage, use methods like drip-irrigation or micro-irrigation or methods like ponics or vertical farming. Grow crops that use less amount of water instead of a crop like sugarcane. The world has lot of patients of diabetes and obesity and dont need to eat cane sugar.
- MarkLv 73 months ago
The Salt content would ruin most if
not all tcrop's which need fresh water to
truly grow & nourish their own being :)
- SpeedLv 73 months ago
In history, invading armies would salt the fields precisely because it killed whatever was growing there and prevented future crops until there'd been enough rain to dilute the salt, which could take years. Opposing armies and the local population might then be starved into submission.
Using seawater for irrigation is simply a more efficient way of salting the fields. The cost of desalinization would exceed the value of the crop yield.
- random_manLv 73 months ago
Unless you are irrigating marine plants (i.e. seaweed), it won't work. Sea water contains far too much salt for most plants and will kill them.