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SURFACE IRRIGATION
IN
MONTANA
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MOST SYSTEMS IN PLACE
FOR MANY YEARS
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SURFACE IRRIGATION TYPES
• WILD FLOODING• CONTOUR DITCH
• BORDERS• FURROWS
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CONTOUR DITCH
PERMANENT CROPS STEEP SLOPES, LITTLE SMOOTHING
SOMETIMES REPLACED WITH GATED PIPE
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BORDER IRRIGATION
• ALMOST ALWAYS GRADED BORDERS
• ALFALFA, GRAINS• MAY BE USED IN
SHORT ROTATIONS WITH FURROW
CROPS
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FURROW IRRIGATION
MOSTLY IN THE YELLOWSTONE RIVER BASIN
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Gated Pipe Systems
Great increase in use since cost share began in late 1980’s.
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PROBLEM
AREAS
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WATER QUALITY
• Late season (>July) water quality/volume declines.• Leaching component must be applied in the spring.• Conversion to center pivots may not be feasible.
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LACK OF WATER MEASUREMENT
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LEADS TO OTHER PROBLEMS
OVER IRRIGATION AND EROSION
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ENCOURAGE USE OF PAM
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EQIP CONVERSION TO SPRINKLERS
LABOR SAVINGS + MANAGEMENT
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FINALLY, THE BOTTOM LINE:
PROFITABLE CONSERVATION