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Labour savings: the continuous movement of the system reduces the labour requirement of
irrigation and increases the number of irrigated area which can be
covered at a given pumping rate. Pivots eliminate the cost of: laying
pipes/tubes, moving pipes/tubes, checking gates/tubes, walking rows,
ditching/damming, land levelling and multiple tillage operations. Once the
pivot is set up, there is no physical labour required. One person
can operate the whole system. |
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Crop water use efficiency increased by
50%-75%. Water savings compared to any surface irrigation up to 45-70%.
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Increased yields compared to surface irrigation up to 5%-25%.
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Double cropping it is possible. Planting into the crop residue
following harvest allows a second autumn/winter crop. The practice shows
3 crop/2 year rotation, i.e. corn - wheat - soybean.
|
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Reduces water logging because
a wide selection of nozzle types are available, so the system can match
the infiltration rate of the soil. |
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The system is a
low pressure system, therefore low
pumping energy is required. |
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Can apply different
application rates, during a revolution
(having different crops or various soil types) during one revolution with
improved water application uniformity. |
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Centre pivots are suitable
for chemigation/fertigation. |
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Pivots have a
relatively low
capital cost per hectare. |