Reserve Potassium

02 Nov 2010

This dataset was first added to LRIS Portal on 02 Nov 2010.

Reserve potassium (Kc) is a measure how much potassium is available to plants. There are three potassium pools: dissolved, extractable, and reserve potassium. Potassium (K) is continuously drawn from the extractable to the dissolved pool when it is used by plants, and likewise from the reserve pool to the extractable pool. The reserve potassium is held in minerals in the soil such as mica. An example of the utility of this information is for organic farmers, who are not allowed to add potassium chloride to their soils (they can add potassium sulphate, but this is much more expensive). Class 3 for Kc will indicate where organic farming is practical. If you zoom in on the map and click on a soil area it will show the Kc class (pot class). The classes are:

0 No data
1 Low (0-0.3 cmolK/kg)
2 Medium (0.3-0.6 cmolK/kg
3 High (>0.6 cmolK/kg)
4 Lakes
5 Alpine
6 Urban

1. Kc_Potassium 13.8 KB lyr
2. reserve_potassium 7.48 MB pdf
Technical Details
Layer ID 48169
Data type Vector polygon
Feature count 103628
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), Atom Feed
Added 2 Nov 2010
Revisions 1 - Browse all revisions
Current revision Imported on Oct. 13, 2011 from Shapefile in NZGD49 / New Zealand Map Grid.


Copy and paste the following code to embed this layer as a single map in your blog or website: