(a) On an outline map of Nigeria, show the main soil zones
(b) Name any one crop that is grown in each of the zones shown on your map
(c) Describe the soil characteristics that have favoured the cultivation of the type of crops in each zone.
(b) Soil characteristics that have favoured the cultivation of cocoa (Zones C):
(i) The land is undulating
(ii) It has well drained surface
(iii) It has a deep clayey and rich-in-acid soil.
Soil characteristics that favoured the cultivation of groundnut (Zone A):
(i) The soil has a wide plain
(ii) The top soil (A - Horizon) is humus
(iii) The soil is loose and sandy.
Soil characteristics that favoured the cultivation of yam (ZoneB):
(i) Well drained soil
(ii) Soil is sandy loam
(iii) It is not acidic and it is well aerated.
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