Monday 8 April 2013

Land clearing


This is an operation usually carried out before the conventional tillage in a farm land. Generally, there are several operations that are involved in land clearing depending on the type of vegetation, soil condition, topography, the extent of clearing required and the purpose for which the clearing is done. The operations includes the following listed below;
  • Removal of all vegetation at the ground level and moving and stacking them in windrows for burning so that roots are left to decay or to be removed at later dates.
  • Removal of all tree and stumps include roots, and moving and stacking them in windrows for subsequent burning.
  • Ploughing and mixing in the vegetation to a soil depth of about 20cm and allowing it to decay.
  • Knocking all vegetation down and crushing it to the surface of the ground to be either burnt or left to decay.
  • Killing or retarding the growth of small trees by cutting the roots below surface of the ground and leaving them to decay or removing and stacking them for subsequent burning if necessary.
Mechanized agriculture requires a proper land clearing completion that will avert premature failure of the conventional tillage machines put in use subsequently and minimize soil nutrient depletion and structural damage due to interacting heavy land clearing equipment-bulldozer and so on. To avert these adverse effects, it is usually advisable that land clearing should be better done in the dry season when the soil has adequate mechanical stability or impendence to resist soil deformation or structural damage. This is at minimal soil moisture content, the risk of soil structural damage is minimized with the corresponding high shear strength which can withstand both the vertical and horizontal loads of the tractor – implement aggregate.

Total removal of vegetation is required for land clearing done for highway, dam construction and as well as building site for poultry. In these particular requirements, the need to preserve the top soil (that houses the essential nutrient) and avert the soil structural damage is inconsequential unlike in mechanized agriculture. The following factors among others, affect the rate of clearing;
  • Rainfall
  • Topography
  • Equipment used
  • Skill of equipment operators
  • The end use of the land being cleared
  • Sizes and kinds of trees
  • Density of vegetation
  • Soil condition
The aforementioned factors listed above determine the various capacities of equipment used for land clearing for farm operations or for any other constructional operations.

17 comments:

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  3. Great post. I would like to know a little more about the burninig method. Will the burn method only clear areas without stumps and roots. Thanks in advance. lTree Trimming New Port Richey

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  12. This is an excellent and comprehensive overview of land clearing! The detailed explanation of the various operations and considerations involved, from vegetation removal to soil preservation, is very informative.

    I appreciate the emphasis on the importance of timing, particularly the benefits of conducting land clearing during the dry season to minimize soil damage. The factors affecting the rate of clearing are well outlined and provide valuable insights. This content is incredibly useful for anyone involved in agriculture or construction.

    Thank you for sharing such detailed and practical knowledge!

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