Site pages
Current course
Participants
General
18 February - 24 February
25 February - 3 March
4 March - 10 March
11 March - 17 March
18 March - 24 March
25 March - 31 March
1 April - 7 April
8 April - 14 April
15 April - 21 April
22 April - 28 April
4.3.2 Biogeochemical cycle
The major plant nutrients derived from soil are nitrogen, phosphorus and potassium, because these are made biologically available to plants. Biogeochemical cycling associated with microorganisms is very important for the maintenance of soil fertility. |
Last modified: Monday, 19 December 2011, 11:45 AM