Agriculture Reference
In-Depth Information
(continued)
Problem identified
by diagnosis/
evaluation
Sl no.
Suggestion(s) for improving performance
12
Irrigation efficiency
of sprinkler is low
•
Adjust the “set time” and “interval between irrigations”
such that irrigation amount matches the soil moisture
deficit
•
Change operating conditions to increase water droplet
size, or operate the system under conditions of low
climatic demand (e.g., at night, morning, and evening)
13
Low-quarter
distribution
uniformity is low
•
Apply correct flow rate based on infiltration rate
•
Design the length of run based on infiltration rate, slope,
and flow rate
•
Cut off the flow at proper time (after reaching the water
front at tail end)
14
Area irrigated per
unit flow (Duty) is
not satisfactory
•
Reduce conveyance, seepage, and percolation loss
•
Schedule irrigation properly (apply correct amount of
water based on need)
•
Improve water-holding capacity of the soil
15
Intensity of
irrigation is low
•
Reduce all possible losses
•
Increase irrigation efficiency
•
Schedule crops and crop rotations
16
Crop productivity is
low
•
Ensure proper irrigation
•
Ensure proper management of other inputs (like balance
fertilizer)
•
Ensure other cultural management (proper population,
weeding, pesticide, and insecticide application, if
needed)
17
Water productivity is
below the normal
range
•
Schedule irrigation properly
•
Reduce tailwater runoff
•
Minimize on-farm water loss
•
Maximize utilization of stored soil moisture
•
Ensure other crop management aspects
•
18
Irrigation water
productivity is
below the desired
limit
Schedule irrigation properly
•
Reduce tailwater runoff
•
Minimize on-farm water loss
•
Maximize utilization of stored soil moisture
•
Ensure other crop management aspects
19
Irrigation
benefit-cost ratio
(B-C ratio) is low
•
Minimize irrigation cost by proper scheduling and
reducing all sorts of water loss
•
Maximize production by proper management of other
inputs and selecting appropriate crop type and variety
•
Maximize utilization of stored soil water and rainwater, if
available
20
Cost per unit
production is high
Similar to that of B-C ratio
21
Irrigation cost per
unit area is high
Similar to that of B-C ratio
22
Farmers income
ratio is not
satisfactory
Similar to that of B-C ratio
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