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Dairy feedbase stategies to offset rising pumping costs

Dairy feedbase stategies to offset rising pumping costs. Pat Daley, Mark Callow. Presentation Northern Australian Dairy Industry Objective of Study Methodology Results Summary. Northern Australian Dairy Industry Milk production occurs all year round

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Dairy feedbase stategies to offset rising pumping costs

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  1. Dairy feedbase stategies to offset rising pumping costs Pat Daley, Mark Callow

  2. Presentation Northern Australian Dairy Industry Objective of Study Methodology Results Summary

  3. Northern Australian Dairy Industry Milk production occurs all year round Subtropical environment; high evapotranspiration, variable rainfall >60% of farms irrigate pastures and crops Irrigated ryegrass pasture important source of feed during winter Milk price has remained stable but energy costs are rising Installation of new irrigation systems

  4. Objective of study • Analyse energy consumption used for irrigation on dairy and lucerne farms • 2. Evaluate the effect of increasing ryegrass production and water use efficiency on pumping costs

  5. Methodology • Compare calculated pumping costs within irrigation systems; • Low pressure (<35 psi; centre pivots and lateral moves) • Medium pressure (60 psi; solid set, side roll, fixed boom soft hose) • High pressure (>95 psi; big gun soft and hard hose) • WUE increased linearly by 0.25 t DM/ML for every 2 t DM/ha increase • Pumping costs ($/ML) were calculated assuming; • Power cost $/Kwh = $0.20 • Energy consumption to pump 1 ML to 1 m of head (Kwh/ML/m) = 6.7 • Kwh/ML/psi = 6.7/1.42 = 4.71

  6. 5.8L/S @114Mh Acknowledgement to Southern Cross Pumps for this performance chart

  7. Results KWh/ML/M or Units of energy/ Water volume/Pressure The average for the state is 6.7 KWh/ML/M @ $0.20 per KWh this is $1.34/ML/M The top 10% for the state is 4.5 KWh/ML/M @ $0.20 per KWh this is $0.90/ML/M

  8. Results • Analyse energy consumption used for irrigation on dairy and lucerne farms

  9. Results 2. Evaluate the effect of increasing ryegrass production and water use efficiency on pumping costs

  10. Summary Energy costs can be reduced by, Improved irrigation hardware design and installation Improved agronomic management

  11. Thank YouKMSI is the Knowledge Management System for Irrigation, developed by the National Centre for Engineering in Agriculture with funds provided by the Queensland Government

  12. Pumping Energy App 6.74.5 • Centre Pivot 95% $46.90 $27.00 • Lateral Move 90% $67.00 $36.00 • Solid Set 85% $69.00 $36.00 • Side Roll 75% $74.15$40.50 • Hand shift 65% $78.40$49.50 • Boom Soft hose 75% $78.56 $40.50 • Big Gun soft hose 60% $98.50 $58.50 • Big Gun Hard hose 55% $116.58 $81.00 • Flood (Control) 50%$26.80 $18.00 • Micro spray 75%$40.20 $27.00

  13. Fuel/Energy • Electricity 3.6 MJ = 1 Kwh 85 to 95%eff • Diesel 40 MJ = 11.1 Kwh 30 to 33%eff • Bio Diesel 35.1 MJ = 9.75 Kwh 30 to 33%eff • Ngas 39 MJ = 10.8 Kwh 40 to 48%eff • Ethanol 23.5MJ = 6.52Kwh 25 to 35%eff

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