Kenya Coffee School

Coffee Agronomy & Extension Handbook

Week 1 – Foundations of Coffee Agronomy

Day 2: Coffee Ecology, Climate Requirements, Soil Science and Site Selection

Module 3: Site Selection and Land Preparation

Learning Objectives

By the end of this module, learners should be able to:

Explain the importance of proper site selection before establishing a coffee farm.
Identify the characteristics of a suitable coffee-growing site.
Conduct a basic land suitability assessment.
Plan an efficient coffee farm layout.
Prepare land using sustainable agricultural practices.
Apply erosion control and water conservation measures during farm establishment.

Introduction

The success of a coffee plantation begins long before the first seedling is planted. Choosing the right location and preparing the land properly are among the most important decisions a coffee farmer will make.

A coffee plantation may remain productive for 30–50 years or more. Mistakes made during site selection or land preparation can reduce productivity for decades, while careful planning creates the foundation for healthy trees, high yields, and premium-quality coffee.

Site selection involves evaluating the physical, biological, climatic, and socioeconomic characteristics of a location to determine whether it is suitable for coffee cultivation.

Importance of Site Selection

Proper site selection helps farmers to:

Improve coffee growth and productivity.
Produce higher-quality beans.
Reduce pest and disease incidence.
Minimize production costs.
Increase water-use efficiency.
Reduce soil erosion.
Improve access to markets.
Enhance long-term farm sustainability.

Selecting an unsuitable site can lead to poor tree growth, low yields, higher management costs, and reduced profitability.

Factors to Consider When Selecting a Coffee Farm

1. Altitude

Altitude influences temperature, bean development, and cup quality.

Arabica Coffee

Recommended altitude:

1,200–2,200 metres above sea level

Higher elevations generally produce:

Denser beans
Higher acidity
Better aroma
More complex flavours

Robusta Coffee

Recommended altitude:

0–900 metres above sea level

Robusta tolerates warmer climates and lower elevations better than Arabica.

2. Climate

Coffee requires:

Moderate temperatures
Reliable rainfall
Good sunlight
Moderate humidity
Protection from strong winds

Ideal annual rainfall:

1,200–2,000 mm

Ideal temperature:

Arabica: 18–24°C
Robusta: 22–30°C

Climate suitability should be assessed over several years rather than relying on a single season.

3. Soil Characteristics

An ideal coffee soil should have:

Deep profile (more than 1 metre)
Good drainage
High organic matter
Slight acidity (pH 5.5–6.5)
Good water-holding capacity
Fertile volcanic or loamy texture

Shallow, compacted, saline, or waterlogged soils should be avoided.

4. Topography

Topography affects water movement, erosion, and machinery access.

Gentle Slopes

Advantages:

Good drainage
Easier management
Reduced erosion risk
Efficient water infiltration

Steep Slopes

Require:

Terracing
Contour planting
Grass strips
Soil conservation structures

Poorly managed steep slopes are highly susceptible to soil erosion.

5. Water Availability

Reliable water sources are essential for:

Nursery irrigation
Dry-season watering
Coffee processing
Domestic use
Livestock

Potential water sources include:

Rivers
Boreholes
Springs
Rainwater harvesting systems
Water pans and reservoirs

Water should be used efficiently to avoid wastage.

6. Accessibility

A profitable coffee farm should have access to:

Roads
Coffee factories
Markets
Input suppliers
Extension services
Financial institutions

Good transport infrastructure reduces post-harvest losses and marketing costs.

7. Land Ownership

Farmers should ensure:

Secure land ownership.
Clear boundaries.
Proper legal documentation.
Long-term investment security.

Coffee is a long-term investment; therefore, land tenure security is essential.

Land Surveying

Before planting, the land should be surveyed to determine:

Farm boundaries.
Slope direction.
Water flow.
Existing vegetation.
Soil variation.
Areas requiring conservation structures.

Modern technologies such as GPS, drones, Geographic Information Systems (GIS), and satellite imagery can improve planning and precision.

Land Clearing

Land should be cleared responsibly.

Remove:

Invasive weeds.
Diseased trees.
Unwanted shrubs.
Dead vegetation.

Retain:

Indigenous trees.
Windbreaks.
Useful shade trees.
Riparian vegetation.

Excessive land clearing increases erosion and biodiversity loss.

Farm Layout

A well-planned coffee farm includes:

Coffee blocks.
Access roads.
Nursery area.
Composting site.
Water storage facilities.
Processing area.
Equipment store.
Shade tree arrangement.
Drainage channels.
Buffer zones.

Good planning improves labour efficiency and future expansion.

Spacing

Proper spacing allows:

Adequate sunlight.
Good air circulation.
Efficient nutrient uptake.
Easier harvesting.
Reduced disease spread.

Spacing varies depending on:

Coffee variety.
Soil fertility.
Rainfall.
Management system.

High-density systems are commonly used with compact varieties such as Ruiru 11.

Planting Holes

Recommended planting holes are typically:

60 cm × 60 cm × 60 cm

Topsoil and subsoil should be separated during digging.

The topsoil should be mixed with:

Compost.
Well-decomposed manure.
Rock phosphate (where recommended).

This mixture promotes early root establishment.

Soil Conservation During Land Preparation

Conservation measures should be installed before planting.

Examples include:

Contour bunds.
Bench terraces.
Cut-off drains.
Grass strips.
Mulching.
Cover crops.
Stone lines.

Preventing erosion is far easier than restoring degraded land.

Shade Planning

Shade trees should be established early.

Suitable shade species may include:

Grevillea robusta
Calliandra calothyrsus
Albizia species
Croton species
Indigenous nitrogen-fixing trees

Benefits include:

Lower temperatures.
Reduced evaporation.
Improved biodiversity.
Additional income from timber, fodder, or firewood.

Regenerative Land Preparation

Regenerative agriculture emphasizes building healthy ecosystems.

Recommended practices include:

Minimal soil disturbance.
Compost application.
Mulching.
Cover cropping.
Agroforestry.
Living roots throughout the year.
Biological soil improvement.

These practices increase soil organic matter and long-term productivity.

Circular Economy Considerations

Land preparation should maximize resource use.

Examples:

Convert cleared vegetation into compost.
Produce mulch from crop residues.
Use pruned branches for biochar.
Collect rainwater during construction.
Recycle organic farm waste.

This reduces costs and minimizes environmental impact.

Common Mistakes During Site Selection

Farmers should avoid:

Planting on poorly drained land.
Ignoring soil testing.
Establishing coffee on shallow soils.
Clearing all shade trees.
Planting without erosion control.
Using uncertified seedlings.
Poor farm planning.

Careful planning saves time and resources in the long term.

Kenya Coffee School Perspective

Kenya Coffee School promotes the principle of “Right Site, Right Variety, Right Management.” Successful coffee farming begins with selecting an ecologically suitable location and preparing the land using climate-smart, regenerative, and sustainable practices.

Summary

Site selection and land preparation are the foundation of a productive coffee plantation. Careful assessment of climate, soil, altitude, water availability, and topography helps farmers establish resilient and profitable coffee farms. Sustainable land preparation protects natural resources while improving long-term productivity.