Agriculture Reference
In-Depth Information
Problem identified
by diagnosis/
evaluation
Sl no.
Suggestion(s) for improving performance
1
Pumping plant
efficiency is low
•
Renovate the moving parts
•
In case of Deep Tubewell, wash out the well screen
•
2
Water conveyance
efficiency is low
Renovate/perform lining the conveyance channel
•
Reduce the field channel density
•
Perform efficient/economic channel design
3
Water delivery
performance is
not satisfactory
•
Recast/ensure delivery system
4
Channel density is
high
•
Reduce the channel length by straightening through the
command area
5
On-farm water loss
is high
•
Compact the borders of each plot
•
Improve the water-holding capacity of the soil by adding
organic manures
•
Reduce relative percentage of sand by adding silt or clay
soil
6
Water supply -
requirement ratio
is not good
•
Recast the supply amount, or
•
Change the cropping pattern (if possible), altering high
water-demanding crops; or
•
Search for new source of supply
7
Deep percolation
fraction is high
•
Line the channels
•
Improve physical condition/water-holding capacity of the
soil
8
Runoff fraction is
high
•
Maintain correct slope of land
•
Apply correct flow rate and time for flow (cutoff time)
•
Take care of the borders; construct high levees
9
Water application
efficiency is low
•
Minimize on-farm water loss
•
Estimate correct amount of water demand
•
Apply correct flow rate based on infiltration
characteristics
•
Level the land with appropriate slope
•
Maintain correct slope toward the water run considering
infiltration rate and flow rate
•
Improve water-holding capacity of the soil
10
Water storage
efficiency is not
satisfactory
•
Correctly estimate the crop root zone depth before
irrigation
•
Estimate correct amount of water demand
•
Apply correct flow rate for correct duration
•
Improve water-holding capacity of the soil
11
Distribution
uniformity is low
(poor distribution
of infiltrated water
over the field)
•
Apply correct flow rate based on infiltration rate and
slope of the run
•
Design the length of run based on infiltration rate, slope,
and flow rate
•
Cut off the flow at proper time
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