Efficient water management plays an important role in irrigated agricultural systems.
Under conventional irrigation (Uniform Rate Irrigation or URI), parts of
an irrigated paddock are over or under-irrigated due to spatial variability in soil water-holding capacity, infiltration rates and topography. Under-irrigated areas are subject to water stress, resulting in production loss, while over-irrigated areas suffer from poor plant health and nutrient leaching.
Variable Rate Irrigation (VRI) systems are designed to address the need to better achieve
irrigation efficiency, aiming for the best conversion of each millimetre of irrigation water
to plant growth. Irrigation efficiency is commonly referred to as application efficiency and
depends on three main factors:
Application efficiency is the percentage of applied water that is retained in the root zone
(or target area) after an irrigation event. VRI allows for maximum application efficiency
of centre-pivot or lateral-move irrigators. VRI systems achieve this by utilising nozzle and
speed control, soil mapping technology, site-specific soil moisture monitoring, and other
decision support tools.
INZ has produced a Precision Irrigation Resource Book to aid irrigators in their understanding of VRI systems.
The release of ‘Our fresh water 2017’ is a call to action for all New Zealanders, says IrrigationNZ CEO, Andrew Curtis. The report measures fresh water quality, quantity and flows, biodiversity and cultural health. “This report highlights the impact we….. Read more
IrrigationNZ has spent the summer gathering data on farms around Canterbury to get a better, more accurate understanding of irrigation efficiency. The results, say INZ Project Manager, Steve Breneger, will provide a benchmark for progress. “We’ve been on-farm for the….. Read more
If there’s one thing every election has in common it’s tax. Usually one party promising to lower them; the others threatening to raise them. This year however, tax is being talked about in the context of water. I’ve spent time….. Read more
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June 8 @ 8:30 am - 5:30 pm
Potential and new directors and managers who interact with boards and wish to increase their understanding of the governance environment. A refresh course for existing directors and managers.
September 26 @ 10:00 am - 4:30 pm
Proudly supported by our Training Partners TRAINING FOR IRRIGATION OPERATORS AND MANAGERS – IMPROVE YOUR IRRIGATION SKILLS AND KNOWLEDGE CROMWELL Where: CROMWELL, venue tba When: 10am- 4pm Tuesday 26th September 2017 Cost: IrrigationNZ Members $350 +GST and Non-members $550 +GST Closing….. Read more
Urban water dirtiest, but rural decline greatest: report | Otago Daily Times Online News t.co/57mhkUOosb