Agriculture Reference
In-Depth Information
Table 6.3: Comparison of irrigation technologies using productivity factors.
Parameter
Small Reservoir
Permanent Shallow
Wells
Large Reservoir
Scheme
Riverine Water
Temporal Shallow
Wells
Riverine Alluvial
Dugouts
Development
and
management
Very expensive;
developed by
government and
NGOs, managed by
the community
Manageable cost,
developed and
managed by
individuals and
farmer groups
Very expensive;
developed by
government and
managed by public
institution.
Manageable cost,
developed and
managed by
individuals and farmer
groups
Manageable but
expensive due to short
life-span of wells;
developed and
managed by
individuals
Expensive due to short
life-span of dugouts,
labour and energy
cost; developed and
managed by
individuals
Plot size
Has relatively small
farm sizes which are
manageable by the
poor farmer
Has relatively small
farm sizes which are
manageable by the
poor farmer
Has relatively large
farm sizes which
requires more
financial resource for
the user
Has relatively large
farm sizes which
requires more financial
resource for the user
Has relatively small
farm sizes which are
manageable by the
poor farmer
Has relatively small
farm sizes which are
manageable by the
poor farmer
Fertilizer &
chemical input
Adequate amounts
are applied due to
relatively small farm
plots
Adequate amounts
are applied due to
relatively small farm
plots
Poor farmers are not
able to provide
adequate amount as a
result of large farm
plots
Poor farmers are not
able to provide
adequate amount as a
result of large farm
plots
Adequate amounts are
applied due to
relatively small farm
plots
Adequate amounts are
applied due to
relatively small farm
plots
Water use
The cost of water-
use is the cheapest.
Water -use is
controlled and not
flexible
The cost of
infrastructure is
manageable. Water-
use is uncontrolled
and flexible
The cost of water-use
is the cheapest.
Water -use is
controlled and not
flexible
The cost of
infrastructure is
manageable. Water-use
is uncontrolled and
flexible
The cost of
infrastructure is
manageable. Water-use
is uncontrolled and
flexible
Water abstraction cost
is expensive. Water-use
is uncontrolled and
flexible
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