Crop |
Rooting depth (m)* |
Banana |
0.5 |
Barley |
1.0 |
Cassava |
0.6 |
Citrus |
1.1 |
Cocoa |
0.7 |
Coconut |
1.0 |
Coffee |
0.9 |
Cotton |
1.0 |
Fallow |
0.5 |
Fibres |
0.8 |
Fodder |
0.8 |
Groundnut |
0.5 |
Maize |
0.9 |
Millet |
1.0 |
Oil-palm |
1.0 |
Other cereals |
1.0 |
Other fruits |
1.0 |
Other oil crops |
1.0 |
Other roots |
0.5 |
Plantains |
0.5 |
Potato |
0.4 |
Pulses |
0.6 |
Rice |
0.5 |
Rubber |
1.0 |
Sesame |
1.0 |
Sorghum |
1.0 |
Soybeans |
0.6 |
Sugar cane |
1.2 |
Sunflower |
0.8 |
Sweet potato |
1.0 |
Tea |
0.9 |
Tobacco |
0.7 |
Vegetables |
0.4 |
Wheat |
1.0 |
* Minimum value of maximum rooting depth used in order to prevent overestimation.
Source: FAO (1998b).