Okay first post and i am totally confused.

 

Looking at the cation exchange, how does the plant root which is negatively charged, get the cations which are positively charged (Ca, Fe, K ect...), that have bonded not to the plant root, but has bonded to the negatively charge clay and organic matter particles?

 

Thanks

Hello,

 

These might be some useful links to start with:

- http://www.soilminerals.com/Cation_Exchange_Simplified.htm

- http://hubcap.clemson.edu/~blpprt/bobweb/BOBWEB23.HTM and

- http://soils.tfrec.wsu.edu/webnutritiongood/soilprops/04CEC.htm

 

hope this helps..

Good luck. : )

Thank you for that. It is what i thought it must be. It's very clever how it works.

 

Caley