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Author Topic: Plant Nutrition .... did you know ?  (Read 1391 times)

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Offline Lionel Bester

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Plant Nutrition .... did you know ?
« on: December 27, 2013, 21:26:50 »
                                          PLANT  NUTRITION
 This might interest some ...
                 Plants feed Quantitatively from the atmosphere and Qualitatively from the soil !


ELEMENTS FROM THE ATMOSPHERE .
   - Represent 92 to 98 % of plants dry weight
   - Constitutive element ( C , O , H , and N )


ELEMENTS FROM THE EARTH .
   - Represent 2 to 8% of plants dry weight
   - Vital Elements   - 12
        - Constitutive - 10 ( P , B , Ca , Mg , S , Fe , Mn , Mo , Cu  and Zn )
        - Non Constitutive - 2 ( K and Cl )
              They constitute 2 to 5 % of the plants Dry Weight .
                         
                 Claude  Bourguignon 2005 ( Soil Engineer ... PHD in Soil Microbiology )

                                And this from Milton Whitney  , USDA " Soil and Civilization "

                             SOURCE OF CONSTITUENTS OF 1000 Kgs . OF DRY VEGETATION
 
From Air     .....     950   Kgs.            From Earth  ....  50 Kgs .
                                                     
Carbon (C) ....     443   Kgs .           Potassium    ....  16.8  Kgs
Oxygen ( O) ....    429   Kgs.            Calcium        ....    6.2  Kgs
Hydrogen (H) ....   61.8 Kgs .           Sodium        ....    4.2  Kgs
Nitrogen (N) ....     16.2 Kgs .          Sulphur         ....   3.7  Kgs
                          --------------            Iron              ....   0.43Kgs
                            950   Kgs            Silicon           ....    7.2 Kgs
                                                       Phosphorous....    5.6 Kgs
                                                       Magnesium   ....    3.6 Kgs
                                                       Chlorine        ....    2.8 Kgs
                                                       Trace Elements       .02 Kgs
                                                                                --------------
                                                                                   50   Kgs .


     

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Offline Mike Nagle

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Re: Plant Nutrition .... did you know ?
« Reply #1 on: December 28, 2013, 18:00:26 »

     That is very interesting!  You sure post some eye-opening information, Lionel.  :thanks:

     Mike
Salt Lake City, Utah  USA

Offline Lionel Bester

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Re: Plant Nutrition .... did you know ?
« Reply #2 on: July 09, 2017, 08:52:24 »
Bump !

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Offline Martin

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Re: Plant Nutrition .... did you know ?
« Reply #3 on: July 10, 2017, 07:38:26 »
Thanks for sharing this Lionel
very informative
Regards
Martin
Martin
cell 0839375216
home 0126561904
Centurion

 


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