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

27th April 2017

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

Testing Irrigation Efficiency – what’s really going on on-farm

12th April 2017

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

Would you like a tax with your water?

12th April 2017

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

April 2017 e-newsletter

12th April 2017

Have a read at the e-newsletter that we’ve just sent out: click here.

Let’s talk about the Selwyn River

24th March 2017

The concern being expressed over the state of the Selwyn River shows just how far we’ve come as a community. It wasn’t that long ago when New Zealand’s fresh water resources were pillaged and plundered, used as waste chutes for….. Read more

EVENTS

IOD Governance Essentials – Ashburton

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.

Irrigation Operator and Manager Training – Cromwell

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

Irrigation Accreditation

Smart Irrigation