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Article 3: Soil Types... continued
(Source: infonet-biovision: CC: BY NC SA)

Planosols and Vertisols
Planosols and Vertisols occur on very gently undulating to flat topography, mostly in rice growing areas e.g. Mwea in the Kirinyaga District and the Kano plains in Nyanza Province. They are found in semi-arid and sub-humid environments. Due to the high clay content in the subsoil (higher than in the top-soil), this layer in the B-horizon is impermeable resulting in a very slow, poor vertical and horizontal drainage and also in an extremely poor workability of the soils. These soils are dark coloured and strongly cracking.

Source: infonet-biovision:
http://www.infonet-biovision.org/default/ct/266/soilManagement
CC: BY NC SA

 

Activity 20 minutes

Use your journal and relate crop suitability to the different soil types and make comparisons with:

outcomes
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