|Special Public Works Programmes - SPWP - Planting Trees - An Illustrated Technical Guide and Training Manual (ILO - UNDP, 1993, 190 p.)|
|2. Preparing the planting site|
Ground preparation is needed to soften the soil, and to allow the roots to affix firmly and deeply. Since nutrients are washed out in the surface soil layer, it is also important to mix soil for the deeper layer with soil from the surface layer to guarantee availability of the nutrients needed by the seedling.
The method depends on the site and the species planted. Usually digging holes and uprooting grasses with the planting hoe about one metre around the planting hole is enough.
The work should be carried out along the contour line, not up and down the slope, otherwise rain water may start to wash away the soil and form gulleys.
In sites with crusts, hard pans or other hard soil layers it may be necessary to use mechanized soil preparation. For this a bulldozer, a sub-soiler or a scarifyer drawn by a tractor can be used.
Work along the contour lines
Tractor with scarifyer