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Soil Improvement Strategy

Objective

The soil improvement strategy is based on building fertility through biological processes rather than relying on high external inputs.

The project prioritizes:

  • living roots;
  • permanent cover;
  • biomass production;
  • composting;
  • mulch cycling;
  • reduced disturbance.

Year 1 Strategy

Main Target

Establish the first working cycle of:

Cover crops
      ↓
Biomass
      ↓
Mulch
      ↓
Compost
      ↓
Soil improvement

Active Area

Initial developed area:

100-150 m²

This limits operational risk and allows observation before expansion.

Imported Materials

Compost

Initial target:

5-10 m³

Use:

  • bed establishment;
  • compost inoculation;
  • top dressing;
  • seedling support.

Manure

Preferred type:

  • old cattle manure;
  • partially decomposed manure;
  • manure mixed with straw.

Avoid direct use of large amounts of fresh manure in active vegetable beds.

Wood Chips / Sawdust

Use:

  • paths;
  • compost carbon source;
  • long-term fungal substrate;
  • moisture buffering.

Do not mix large amounts of fresh sawdust directly into planting soil.

On-Site Biomass

All usable plant material generated on site should remain on site whenever practical.

Sources:

  • cut weeds;
  • cover crop residues;
  • amaranth stems;
  • sorghum stems;
  • leaves;
  • grass clippings.

Use:

  • surface mulch;
  • compost feedstock;
  • path cover.

Cut-and-Drop Method

Plants are cut at or near soil level.

Roots remain in the ground.

Above-ground biomass remains on the bed.

Expected effects:

  • root channels remain intact;
  • soil organisms consume decaying roots;
  • surface mulch protects the soil;
  • nutrients are recycled locally.

Soil Disturbance

Disturbance should be limited to what is operationally necessary.

Preferred methods:

  • shallow bed preparation;
  • direct seeding;
  • transplanting into mulch;
  • mowing instead of full clearing.

Avoid unnecessary inversion of the soil profile.

Monitoring

Visual Indicators

  • soil color;
  • crumb structure;
  • moisture retention;
  • root depth;
  • weed pressure;
  • fungal growth under mulch.

Biological Indicators

  • earthworms;
  • insects;
  • fungal mycelium;
  • decomposition speed.

Operational Indicators

  • irrigation frequency;
  • mulch demand;
  • compost demand;
  • labor hours per area.

Expected Development

Year 1

  • first mulch cycle;
  • initial compost system;
  • active root systems;
  • early biological activity.

Year 2

  • improved water retention;
  • stronger soil structure;
  • reduced bare soil;
  • higher biomass production.

Year 3

  • lower external input dependency;
  • improved internal fertility cycle;
  • better crop resilience;
  • more stable production.