Upload
mabel-gaines
View
220
Download
1
Tags:
Embed Size (px)
Citation preview
‘‘CULTIVATION’CULTIVATION’
‘‘.. Is the tilling of the soil and its vegetation or .. Is the tilling of the soil and its vegetation or brash cover with implements to provide a brash cover with implements to provide a favourable environment for efficient favourable environment for efficient establishment and early uniform growth of establishment and early uniform growth of plants or regeneration…….it includes plants or regeneration…….it includes treatments such as mounding , moling, treatments such as mounding , moling, ploughing , ripping, scarifying and subsoiling.’ploughing , ripping, scarifying and subsoiling.’
Cultivation of soils for Forestry Cultivation of soils for Forestry F.C. Bulletin F.C. Bulletin 119119
REASONS FOR CULTIVATIONREASONS FOR CULTIVATION
Improves conditions for tree growth by Improves conditions for tree growth by changing soil and site conditionschanging soil and site conditions
Enables successful and cost effective Enables successful and cost effective establishment of young treesestablishment of young trees
Suppresses weed growthSuppresses weed growth Improves rootingImproves rooting Improve drainage and aerationImprove drainage and aeration To improve natural regenerationTo improve natural regeneration
What is actually done in the ground What is actually done in the ground prep?prep?
Brash movedBrash moved Break up humus and mixing of soil horizonsBreak up humus and mixing of soil horizons Improving pore space Improving pore space Break up compactionBreak up compaction Change soil and air temperature near soil Change soil and air temperature near soil
surfacesurface Alter soil moisture conditionsAlter soil moisture conditions
What effects on…..What effects on…..
Soil temperatureSoil temperature Air temperature (frosts)Air temperature (frosts) Soil moistureSoil moisture Soil moisture in dry soilsSoil moisture in dry soils Soil densitySoil density
Choice of ground prep. equipmentChoice of ground prep. equipment
Size of areaSize of area Site conditionsSite conditions Environmental constraintsEnvironmental constraints Availability of machineryAvailability of machinery Versatility of machineryVersatility of machinery Cost in relation to benefitsCost in relation to benefits