Tableau 3

Concentrations en éléments minéraux et en éléments traces métalliques des sols des palmeraies prospectées.

Concentrations of mineral elements and metals in soils of the prospected palm groves.

  Sol Aoufous Sol Zouala Sol PNEM Sol PNOM
Concentration en %        
   Azote Total 0,05c 0,07c 0,13b 0,25a
   Ca 6,01b 6,24a 5,94b 5,54c
   Cl 3,94a 3,78b 3,55c 3,55c
   Fe 0,98b 0,93c 0,98b 1,50a
Concentration en ppm        
   Si 5036a 4557b 4946a 4823ab
   Al 3291a 3106a 2609a 2626a
   P Total 1267a 1307a 1144a 1286a
   P assimilable 6,98c 13,65c 30,98b 42,30a
   K 823a 855a 782a 821a
   S 601a 630a 547a 616a
   Sr 259b 272a 196c 123d
   Zr 136b 180a 139b 141b
   Zn 29,2b 26,3b 30,9b 55,2a
   Pb 15,68a 14,1a 13,3a 15,2a
   Cu 15,6a 20,5a 14,4a 23,4a
   Y 11,92b 13,9b 14,2b 20,2a

Les valeurs suivies de la même lettre ne sont pas significativement différentes P < 0,05 (test de Newman et Keuls).

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