Young coffee seedlings growing under the protective canopy of Ficus spp. (Charles L Malingu (Kagera TAMP, Kabale))

Ficus Natalensis Agroforestry System (Uganda)

Okusimba emituba n'ebimera

Description

Ficus natalensis based agroforestry system protects crops on windy hill slopes facing Lake Victoria and reduce runoff towards the meandering Kagera River Valley.

Ficus natalensis is traditionally scattered in crop fields as a land management practice in central and south-western Uganda. The improved technology designed through community participation involves planting lines of Ficus natalensis along the contour at an interval that enables the tree to provide shade to young crops without depriving them of sunshine. When planted together with coffee trees or in banana plantations, the tall Ficus tree forms the top storey that protects the crop from the hot sun.

Purpose of the Technology: The main purpose of Ficus based agroforestry is to protect the soil from erosion. Within 3 to 5 years the Ficus tree forms a deep root system that stabilizes the soil. In addition, it drops leaves which quickly decay to provide both soil cover and manure thereby increasing the fertility of the soil. The trees provide firewood, fodder for livestock and bark cloth which can be used domestically or sold to supplement household income. They also act as wind breaks.

Establishment / maintenance activities and inputs: Ficus Natalensis is propagated using cuttings from young branches which are planted vertically 6 m apart along a contour. Propagation material is readily available and cheap, making the technology inexpensive to establish. Any annual or perennial crop can be inter-cropped with Ficus spp. provided the tree canopy is managed well. The tree is quite robust and can attain heights of over 20m, with a very extensive canopy if left to grow. Pruning raises its canopy to the desired height above the ground. In its early stages, fencing is required to protect the tree from damage by livestock. Within 12 to 18 months, however, the tree is established enough to withstand browsing. Only simple tools like hoes and garden forks for digging holes/pits are essential for establishment of the technology. The implementation of the technology on steep slopes (> 50%) is not possible without other supportive SLM interventions, in Rakai these include construction of stone lines and mulch application.

Natural / human environment: The pruned branches of Ficus natalensis are used as fuel wood when dry. Therefore scarcity of fuel wood may lead to over-harvesting of branches and destroying the canopy. Nonetheless, the tree regenerates quickly with the coming of the rains. Ficus tree can live for a hundred years.

Location

Location: Rakai District (Kijonjo Parish), Uganda, Uganda

No. of Technology sites analysed:

Geo-reference of selected sites
  • 31.69072, -0.96728

Spread of the Technology:

In a permanently protected area?:

Date of implementation: less than 10 years ago (recently)

Type of introduction
The watershed technologies of agroforestry and stone lines has created a plantation out of wasteland in 3 rain seasons (Charles L Malingu (Kagera TAMP, Kabale))

Classification of the Technology

Main purpose
  • improve production
  • reduce, prevent, restore land degradation
  • conserve ecosystem
  • protect a watershed/ downstream areas – in combination with other Technologies
  • preserve/ improve biodiversity
  • reduce risk of disasters
  • adapt to climate change/ extremes and its impacts
  • mitigate climate change and its impacts
  • create beneficial economic impact
  • create beneficial social impact
Land use

  • Cropland
    • Annual cropping: cereals - maize, legumes and pulses - beans
    • Perennial (non-woody) cropping: banana/plantain/abaca
    • Tree and shrub cropping: coffee, open grown, figs, Ficus Spp.
    Number of growing seasons per year: 2
  • Forest/ woodlandsProducts and services: Fuelwood
Water supply
  • rainfed
  • mixed rainfed-irrigated
  • full irrigation

Purpose related to land degradation
  • prevent land degradation
  • reduce land degradation
  • restore/ rehabilitate severely degraded land
  • adapt to land degradation
  • not applicable
Degradation addressed
  • soil erosion by water - Wt: loss of topsoil/ surface erosion
  • biological degradation - Bc: reduction of vegetation cover, Bq: quantity/ biomass decline
SLM group
  • agroforestry
SLM measures
  • agronomic measures - A7: Others
  • vegetative measures - V1: Tree and shrub cover
  • structural measures - S11: Others

Technical drawing

Technical specifications
A diagram showing Ficus spp. trees planted to provide shade to coffee trees.

Location: Kijonjo B. village. Rakai

Date: 2013-12-05

Technical knowledge required for field staff / advisors: moderate (Knowledge of which trees will do well with the crops to be cultivated)

Technical knowledge required for land users: low (Land user dedication and a little guidance is enough for the implementation of the technology.)

Main technical functions: control of raindrop splash, control of dispersed runoff: impede / retard, improvement of ground cover, stabilisation of soil (eg by tree roots against land slides), reduction in wind speed, spatial arrangement and diversification of land use

Secondary technical functions: increase in organic matter, increase in nutrient availability (supply, recycling,…), increase of infiltration, increase / maintain water stored in soil, sediment retention / trapping, sediment harvesting, increase of biomass (quantity)

Aligned: -contour
Vegetative material: T : trees / shrubs
Number of plants per (ha): 250
Vertical interval between rows / strips / blocks (m): 20m
Spacing between rows / strips / blocks (m): 2m
Vertical interval within rows / strips / blocks (m): 2m
Width within rows / strips / blocks (m): 20m

Trees/ shrubs species: Ficus natalensis (also serves as perennial fodder), planted in the field using stem cuttings

Perennial crops species: Robusta coffee planted using seedlings bought from specialized nurseries

Slope (which determines the spacing indicated above): 35%
Author: Byonabye Proscovia, Kagera TAMP, Kabale

Establishment and maintenance: activities, inputs and costs

Calculation of inputs and costs
  • Costs are calculated:
  • Currency used for cost calculation: Ushs
  • Exchange rate (to USD): 1 USD = 2500.0 Ushs
  • Average wage cost of hired labour per day: 2.00
Most important factors affecting the costs
The most important factor affecting cost is labor to transport the bulky stem cuttings to the site. However, Ficus Natalensis is easy to establish and is durable (over 100 years) depending on management. It is extremely hardy and when it grows to 50cm to 100cm stem diameter it can be used for timber or to make dugout canoes. Establishment costs are easily recovered.
Establishment activities
  1. Sourcing planting materials (Timing/ frequency: Beginning of rains)
  2. Making pits (Timing/ frequency: Beginning of rains)
  3. Planting cuttings (Timing/ frequency: Wet season)
  4. Spot weeding (Timing/ frequency: Wet season)
Establishment inputs and costs
Specify input Unit Quantity Costs per Unit (Ushs) Total costs per input (Ushs) % of costs borne by land users
Labour
Sourcing planting materials ha 1.0 30.0 30.0 100.0
Making pits ha 1.0 30.0 30.0 100.0
Planting cuttings ha 1.0 8.0 8.0
Spot weeding ha 1.0 8.0 8.0
Equipment
2 panga ha 1.0 8.0 8.0 100.0
2 hoes ha 1.0 8.0 8.0 100.0
Plant material
Cuttings (500 stern cuttings) ha 1.0 30.0 30.0
Total costs for establishment of the Technology 122.0
Total costs for establishment of the Technology in USD 0.05
Maintenance activities
  1. Spot weeding (Timing/ frequency: twice a year)
  2. Pruning (Timing/ frequency: Wet season)
  3. Removing and processing the bark into bark cloth (Timing/ frequency: Once in 2 years)
Maintenance inputs and costs
Specify input Unit Quantity Costs per Unit (Ushs) Total costs per input (Ushs) % of costs borne by land users
Labour
Spot weeding ha 1.0 8.0 8.0 100.0
Pruning ha 1.0 8.0 8.0
Removing and processing the bark into bark cloth ha 1.0 14.0 14.0
Equipment
1 panga ha 1.0 4.0 4.0 100.0
1 hoe ha 1.0 4.0 4.0
Total costs for maintenance of the Technology 38.0
Total costs for maintenance of the Technology in USD 0.02

Natural environment

Average annual rainfall
  • < 250 mm
  • 251-500 mm
  • 501-750 mm
  • 751-1,000 mm
  • 1,001-1,500 mm
  • 1,501-2,000 mm
  • 2,001-3,000 mm
  • 3,001-4,000 mm
  • > 4,000 mm
Agro-climatic zone
  • humid
  • sub-humid
  • semi-arid
  • arid
Specifications on climate
The area receives two rainy seasons (March-May & September-December)
Thermal climate class: tropics. The area lies at the equator.
The area has a dry and a wet season, but other factors influencing its weather include proximity to Lake Victoria and the Kagera River.
Slope
  • flat (0-2%)
  • gentle (3-5%)
  • moderate (6-10%)
  • rolling (11-15%)
  • hilly (16-30%)
  • steep (31-60%)
  • very steep (>60%)
Landforms
  • plateau/plains
  • ridges
  • mountain slopes
  • hill slopes
  • footslopes
  • valley floors
Altitude
  • 0-100 m a.s.l.
  • 101-500 m a.s.l.
  • 501-1,000 m a.s.l.
  • 1,001-1,500 m a.s.l.
  • 1,501-2,000 m a.s.l.
  • 2,001-2,500 m a.s.l.
  • 2,501-3,000 m a.s.l.
  • 3,001-4,000 m a.s.l.
  • > 4,000 m a.s.l.
Technology is applied in
  • convex situations
  • concave situations
  • not relevant
Soil depth
  • very shallow (0-20 cm)
  • shallow (21-50 cm)
  • moderately deep (51-80 cm)
  • deep (81-120 cm)
  • very deep (> 120 cm)
Soil texture (topsoil)
  • coarse/ light (sandy)
  • medium (loamy, silty)
  • fine/ heavy (clay)
Soil texture (> 20 cm below surface)
  • coarse/ light (sandy)
  • medium (loamy, silty)
  • fine/ heavy (clay)
Topsoil organic matter content
  • high (>3%)
  • medium (1-3%)
  • low (<1%)
Groundwater table
  • on surface
  • < 5 m
  • 5-50 m
  • > 50 m
Availability of surface water
  • excess
  • good
  • medium
  • poor/ none
Water quality (untreated)
  • good drinking water
  • poor drinking water (treatment required)
  • for agricultural use only (irrigation)
  • unusable
Water quality refers to:
Is salinity a problem?
  • Ja
  • Nee

Occurrence of flooding
  • Ja
  • Nee
Species diversity
  • high
  • medium
  • low
Habitat diversity
  • high
  • medium
  • low

Characteristics of land users applying the Technology

Market orientation
  • subsistence (self-supply)
  • mixed (subsistence/ commercial)
  • commercial/ market
Off-farm income
  • less than 10% of all income
  • 10-50% of all income
  • > 50% of all income
Relative level of wealth
  • very poor
  • poor
  • average
  • rich
  • very rich
Level of mechanization
  • manual work
  • animal traction
  • mechanized/ motorized
Sedentary or nomadic
  • Sedentary
  • Semi-nomadic
  • Nomadic
Individuals or groups
  • individual/ household
  • groups/ community
  • cooperative
  • employee (company, government)
Gender
  • women
  • men
Age
  • children
  • youth
  • middle-aged
  • elderly
Area used per household
  • < 0.5 ha
  • 0.5-1 ha
  • 1-2 ha
  • 2-5 ha
  • 5-15 ha
  • 15-50 ha
  • 50-100 ha
  • 100-500 ha
  • 500-1,000 ha
  • 1,000-10,000 ha
  • > 10,000 ha
Scale
  • small-scale
  • medium-scale
  • large-scale
Land ownership
  • state
  • company
  • communal/ village
  • group
  • individual, not titled
  • individual, titled
Land use rights
  • open access (unorganized)
  • communal (organized)
  • leased
  • individual
Water use rights
  • open access (unorganized)
  • communal (organized)
  • leased
  • individual
Access to services and infrastructure
health

poor
x
good
education

poor
x
good
technical assistance

poor
x
good
employment (e.g. off-farm)

poor
x
good
markets

poor
x
good
energy

poor
x
good
roads and transport

poor
x
good
drinking water and sanitation

poor
x
good
financial services

poor
x
good

Impacts

Socio-economic impacts
Crop production
decreased
x
increased

Quantity before SLM: 100
Quantity after SLM: 400
coffee and bananas

wood production
decreased
x
increased


For wood fuel (firewood & charcoal). there was almost nothing before.

risk of production failure
increased
x
decreased


conservation of moisture, improved soil fertility

product diversity
decreased
x
increased

production area (new land under cultivation/ use)
decreased
x
increased


Agricultural land on which Ficus is planted

farm income
decreased
x
increased


respondents reported increses in income but not documented.

diversity of income sources
decreased
x
increased

workload
increased
x
decreased


Realization of the benefits has led many farmers to need more help therefore raising the cost of labour

Socio-cultural impacts
food security/ self-sufficiency
reduced
x
improved


incresed agricultural produce.

cultural opportunities (eg spiritual, aesthetic, others)
reduced
x
improved


backcloth is used for cultural functions .eg. burying the dead.

conflict mitigation
worsened
x
improved

Improved livelihoods and human well-being
decreased
x
increased


The technology has improved availability of both food and fuel wood. Some products from trees used in agroforestry such as backcloth (Embugo - Luganda) are sold, diversifying household income.

Ecological impacts
surface runoff
increased
x
decreased

evaporation
increased
x
decreased

soil moisture
decreased
x
increased

soil cover
reduced
x
improved

soil loss
increased
x
decreased

soil organic matter/ below ground C
decreased
x
increased


dried tree leaves add humus and organic matter in the soil.

biomass/ above ground C
decreased
x
increased

plant diversity
decreased
x
increased


various tree species are used for agroforestry.

beneficial species (predators, earthworms, pollinators)
decreased
x
increased

habitat diversity
decreased
x
increased

pest/ disease control
decreased
x
increased

landslides/ debris flows
increased
x
decreased


Prevention of predisposition towards landslides

wind velocity
increased
x
decreased


windbreaks reduced wind velocity.

Risk of lightening strikes
increased
x
decreased

Off-site impacts
downstream flooding (undesired)
increased
x
reduced

downstream siltation
increased
x
decreased

groundwater/ river pollution
increased
x
reduced

damage on neighbours' fields
increased
x
reduced

Cost-benefit analysis

Benefits compared with establishment costs
Short-term returns
very negative
x
very positive

Long-term returns
very negative
x
very positive

Benefits compared with maintenance costs
Short-term returns
very negative
x
very positive

Long-term returns
very negative
x
very positive

The costs for both establishment and maintenance are a small fraction of the benefits accruing from the technology.

Climate change

Gradual climate change
annual temperature increase

not well at all
x
very well
Climate-related extremes (disasters)
local rainstorm

not well at all
very well
Answer: not known
local windstorm

not well at all
x
very well
drought

not well at all
x
very well
general (river) flood

not well at all
very well
Answer: not known
Other climate-related consequences
reduced growing period

not well at all
x
very well

Adoption and adaptation

Percentage of land users in the area who have adopted the Technology
  • single cases/ experimental
  • 1-10%
  • 11-50%
  • > 50%
Of all those who have adopted the Technology, how many have done so without receiving material incentives?
  • 0-10%
  • 11-50%
  • 51-90%
  • 91-100%
Number of households and/ or area covered
8
Has the Technology been modified recently to adapt to changing conditions?
  • Ja
  • Nee
To which changing conditions?
  • climatic change/ extremes
  • changing markets
  • labour availability (e.g. due to migration)

Conclusions and lessons learnt

Strengths: land user's view
  • Ficus is used to provide backcloth that is sold for the making of Art and crafts and for cultural functions.

    How can they be sustained / enhanced? Management to accelerate healing of the bark within a shorter period should be investigated
  • Trees shield crops from dangerous storms /rains and intense sunshine.

    How can they be sustained / enhanced? Encourage the spread of the canopy
  • Ficus is good and attractive to birds and insects

    How can they be sustained / enhanced? Provision of material support in form of seedlings, farm tools for accelerated multiplication
  • Ficus natalensis leaves are cut and fed to livestock like goats.

    How can they be sustained / enhanced? Encourage indeginous trees and growing fodder crops such as calliandra and nappier grass
Strengths: compiler’s or other key resource person’s view
  • Demand for wood fuel is high

    How can they be sustained / enhanced? Local bye laws should be enacted to control deforestation and encourage tree growing
  • It improves soil fertility-Ficus natalensis sheds leaves once every year, adding to soil humus.

    How can they be sustained / enhanced? More guidance should be given to the farmers for sustained spontaneous adoption of the technology
  • It checks the speed of wind thereby protecting crops.

    How can they be sustained / enhanced? Other agricultural, ecological and social benefits could be explored in this scenic area facing the Kagera River where it enters Lake Victoria
  • Stakes made from the Ficus branches can be used to grow climbing plants eg. passion fruits, yams as well as climbing beans

    How can they be sustained / enhanced? More tree planting should be encouraged
  • Prevents soil erosion by checking raindrop splash, speed and amount of surface runoff and stabilizes the soil.

    How can they be sustained / enhanced? Because the ficus tree takes time to establish, other technologies such as trenches and grass strips could be used to reinforce it
Weaknesses/ disadvantages/ risks: land user's viewhow to overcome
  • The trees can hinder crops from light if canopy is dense Prune periodically to enable other crops access to light
  • Some trees can fall especially during heavy and stormy rains, damaging plants and animals. cutting excessive branches to reduce the load borne by trees.
  • Trees can attract lightening ,which destroys plants and animals. Avoid putting animals under tall trees.
Weaknesses/ disadvantages/ risks: compiler’s or other key resource person’s viewhow to overcome
  • Some tree species especially with short roots , compete with crops for nutrients. Planting tree species with deep roots to avoid competition for nutrients.
  • It is a home for weaver birds and caterpillars. Use scarecrows and biological control.

References

Compiler
  • Wilson Bamwerinde
Editors
Reviewer
  • Fabian Ottiger
  • Alexandra Gavilano
Date of documentation: April 25, 2013
Last update: Aug. 11, 2019
Resource persons
Full description in the WOCAT database
Linked SLM data
Documentation was faciliated by
Institution Project
Key references
  • Kagera TAMP project website: http://www.fao.org/nr/kagera/en/
This work is licensed under Creative Commons Attribution-NonCommercial-ShareaAlike 4.0 International