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Thread: Effects of salinty on plant growth

  1. #1 Effects of salinty on plant growth 
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    I am going to conduct an experiment on the effects of salinity on plant growth the only problem is I don't know how much salt to add to my plants. I want to add just the right amount of salt to distort the plant growth but not kill the plant altogether. The experiment will take place in a container which is about 40cm long, 16cm wide and 14cm in bredth. I will be plant 4 seedlings into this container (baby cos lettuce). Finally, I just need to know how much salt to apply to the container of seedlings!!

    Any help would be greatly appreciated!


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  3. #2  
    Forum Professor Wild Cobra's Avatar
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    I don't know where to start number wise. a suggestion however. Start multiple seedlings in multiple containers. Use experimental multipliers of 3, 10, 30, 100, 300, 1000 etc. of a base value. Once you find the survival range, refine your levels and experiment in a smaller range.


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  4. #3  
    Forum Radioactive Isotope skeptic's Avatar
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    There are a few land plants that can grow in sea water, like the mangrove. This is 3.5% salt by weight.

    I suggest you work from zero salt to 1% of the sea, 5%, 10%, 30% and 100%. It really depends on the plant species.

    If you are near the sea, you could even collect a few gallons of sea water and dilute it with fresh, so you are dealing with the real thing.
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  5. #4  
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    What type of plant are you using. A more primitive plant may still have osmotic controls because plant ancestors came from the Sea.
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  6. #5 hi 
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    which plant u r using for experiment? i think u should have to check thee thresh hold level of plant. just write on google threshhold level of the plant u r using for experiment then u will get idea how much salt concentration plant will survive without out compromising the yield
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  7. #6  
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    There are a few land plants that can grow in sea water, like the mangrove. This is 3.5% salt by weight. and i am going to conduct an experiment on the effects of salinity on plant growth the only problem is I don't know how much salt to add to my plants. I want to add just the right amount of salt









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  8. #7  
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    Are you going to track the amount of accumulated salt in the system? The salt content will rise as you add the salt water over the course of the plant's life. Or perhaps by using hydroponics maintain the salt exposure at the same level. You could perhaps building something like an Aerogarden with overhead lights and a couple of cheap aquarium pumps, one per sample set.
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