Agriculture Reference
In-Depth Information
Changing habits, equipment, crops, and irrigation equipment/patterns is difficult for
anybody including farmers and households, since they are unfamiliar with new tech-
nologies and uncertain of the benefits of making the change. A couple of methods
have been used in the developed world to speed up this acceptance. They include a
great deal of education and financial incentives from government and local supply
authority.
Box 5.1 Potential for Demand Management in the Urban
and Agricultural Sector of Bangladesh
Many areas and opportunities exist to make better use of demand side manage-
ment measures. Water use in the urban and agricultural sectors of Bangladesh
are generally highly inefficient, with waste/inefficiencies of up to 40 and 50%,
respectively. The agricultural water sector holds even greater potential for sav-
ings than the urban sector because it uses three times as much water and is
more inefficient than urban use.
Flood irrigation, which achieves only 50-60% efficiency, is used in almost
all irrigated lands. An increase in the efficiency of only 20% in urban and
agricultural water use would save millions of dollars each year. Demonstration
of real cost savings to consumers and the development of specific goals and
objectives for demand side management programs are two important steps
needed to overcome the challenges.
5.3.2 Supply Side Management
Supply management options refer to the actions that affect the quantity and quality
of water at the entry point to the distribution system.
5.3.2.1 Approaches of Supply Management
Supply management options include the following measures:
(i) Development of new supply source
i. surface water (rubber dam)
ii. groundwater
(ii) Use of nonconventional water with appropriate strategic measures
saline water/poor quality water
with mixing/blending ratio
application of poor quality water at nonsensitive growth stages
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