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Titrimetric determination of nutrients?

  1. May 17, 2015 #1
    I need some help. I am making nutrient solution for plant. plant are growing in water without soil
    1. MgSo4 0.65 gm
    2. H3Bo3 0.30 gm
    3.KH2So4 0.37 gm
    4. K2So4 0.45 gm

    above 4 nutrients are mix in 1 L water . Plant will absorb all nutrients according their needs

    How to calculate that how many MgSo4 will be absorb by Plant in 10 days ? I have to take sample of nutrient solution after 10 days. than I have to do some test

    I want to ask something.
    1) can we calculate how many MgSo4 will be absorb by Plant in 10 days ?
    2) I am mixing all nutrients in solid form. can we calculate in solid form how many MgSo4 will be absorb by Plant in 10 days ?
    Last edited: May 17, 2015
  2. jcsd
  3. May 17, 2015 #2


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    Staff: Mentor

    On a very general level if you determine the initial and final amount of Mg in the solution you will have the answer. However, I am not convinced titration will be easy, initial solution is rather diluted. You can try complexometric titration with EDTA, but it may prove challenging.
  4. May 18, 2015 #3
    Thanks for help. plant does not absorb all nutrient very fast. I want to some lab test to measure amount of nutrient present in water but I don't know to test each nutrient ?

    Hydroponic nutrient sloutaion
    1) Boric Acid (H3BO3): 0.028g
    2) Calcium Nitrate (Ca(No3)2): 0.002 gm
    3) Potassium Nitrate (KNO3): 0.075g
    5) Monopotassium Phosphate (KH2PO4):0.0 37gm
    6) Magnesium Sulphate (MgSO4 * 7H2O): 0.064g
    7) Sulphate of Potash (K2SO4):0.0 45gm
    8) Zinc Sulphate (ZnSO4): 0.0022gm
    9)Manganese Sulphate (MnSO4): 0.015g
    10)Copper Sulphate (CuSO4): 0.0008gm

    I don't understand how to measure amount of each nutrients present in hydroponic solutions after 15 days ?
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