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.
IrrigationNZ will be back on farms this summer testing irrigation systems and helping farmers improve the efficiency of their irrigation. Last summer, IrrigationNZ in partnership with Environment Canterbury, developed a new testing programme which saw 131 Ashburton farms have their….. Read more
IrrigationNZ says that the petition presented by Greenpeace at Parliament today misrepresents how irrigation has been funded and used and ignores the wide range of benefits to New Zealand from irrigation, as well as the efforts being made to address….. Read more
With irrigation season underway Environment Canterbury is reminding irrigators to be aware of where their water is going and irrigate the grass-not the road. Environment Canterbury principal resource management advisor Richard Purdon said several complaints have already been received so….. Read more
Registrations for IrrigationNZ’s 2018 national Conference are now open. Unlocking a Golden Future through SMART irrigation is the theme of the conference to be hosted at Alexandra from 17-19 April 2018. “With so much public focus on irrigation and water issues….. Read more
A Labour and Green commitment to wind down Government loan funding for irrigation ignores irrigation’s vital role in regional growth and in climate change adaptation, says nonprofit membership body IrrigationNZ. “We note the Labour-New Zealand First coalition agreement has a….. Read more
November 7, 2017 - February 28, 2018
Is your irrigation equipment operating as it should? What improvements could be made? These are questions that can be technically challenging and costly. To help irrigating farmers navigate to Good Management….. Read more
November 29 @ 10:00 am - 4:30 pm
Proudly supported by our Training Partners TRAINING FOR IRRIGATION OPERATORS AND MANAGERS – IMPROVE YOUR IRRIGATION SKILLS AND KNOWLEDGE DARFIELD Where: Darfield Rec Centre When: 10am- 4pm Wednesday 29th November 2017 Cost: IrrigationNZ Members $350 +GST and Non-members $550….. Read more