Irrigation New Zealand

Soil water

Understanding your soil is critical to irrigation scheduling. Below are some resources to help you understand your soil type and how much water it holds.

Soil profile builder

Soil profile builder is a tool that helps you determine how much water your soil holds.

Irrigation scheduling using soil water budgets

Soil water budgets are a simple low cost method to schedule your irrigation. Inputs (rainfall and irrigation) and outputs (plant water use and any drainage from over irrigation) are recorded as a daily water budget in mm. The soils water holding characteristics define the maximum amount of water that can be stored, again in mm.

Soil water budgets work well for pasture irrigation where the daily Potential Evapotranspiration (PET) can be used as the measure of plant water use. For other crops PET needs to be adjusted by a crop factor, this reflects the crop type and/or growth stage.

INZ Irrigation Essentials and Irrigation Management resource books provide detailed information on understanding soil water, climate measurements for irrigation, plant water use, and how to use these to schedule your irrigation. These are available free to INZ members

Soil water budget spreadsheet

Below are a list of commercial water budgeting tools and services available in NZ, note soil water budgets are usually used in conjunction with soil moisture monitoring.

NEWS

Irrigation investment vital for regions and for climate change adaptation

24th October 2017

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

Common sense prevails on water tax

20th October 2017

IrrigationNZ says that a decision by the new government not to introduce a water tax would be a victory for common sense. IrrigationNZ Chief Executive Andrew Curtis has congratulated Prime Minister Jacinda Ardern and the new government. Speaking to media….. Read more

Irrigation Innovation Award – entries now open

26th September 2017

Farms and businesses with new products, technologies, or practices that exemplify innovation in irrigation are being encouraged to enter IrrigationNZ’s ‘Innovation in Irrigation Award’, sponsored by Southern Wide Real Estate. The highly prestigious award promotes innovation in irrigation and has a….. Read more

Call for abstracts to benefit irrigators 

26th September 2017

IrrigationNZ is inviting short abstracts to be submitted on irrigated related topics for its 2018 Conference to be held in Central Otago, New Zealand. The conference has the theme of unlocking a golden future and IrrigationNZ is seeking to highlight new,….. Read more

Water tax ‘not about water bottlers’ – they’ll pay less than 3%

22nd September 2017

Labour leader Jacinda Ardern should not answer questions about the party’s proposed water tax by saying it’s about targeting water bottlers, says IrrigationNZ. When Labour Leader Jacinda Ardern was asked in last night’s TVNZ Leader’s Debate whether rural New Zealand….. Read more

EVENTS

Irrigation Operator and Manager Training – Darfield

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

New Zealand Certificate in Irrigation System Design

January 18, 2018 - January 19, 2018

Acquire the specialist skills required to design technically efficient and environmentally sustainable irrigation systems. This certificate is suitable for people with prior knowledge and experience in irrigation. You will be required to design two different irrigation systems so will need….. Read more

Irrigation Accreditation

Smart Irrigation