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

June 2017 E-newsletter

9th June 2017

Have a read at the e-newsletter we’ve just sent out.

May 2017 E-newsletter

26th May 2017

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

IrrigationNZ welcomes new government funding for irrigation

18th May 2017

Today’s announcement of an additional $90 million funding for irrigation is great news for New Zealand communities, says IrrigationNZ CEO, Andrew Curtis. “Sustainable irrigated agriculture is New Zealand’s future. It underpins many of the provincial economies on the east coast….. Read more

‘Our fresh water 2017’ highlights the need for collective action

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

EVENTS

Irrigation Fundamentals

August 8 @ 8:30 am - August 9 @ 5:00 pm

Irrigation fundamentals is a 2 day course targeting new entrants to the industry and frontline staff of businesses and organisations that provide services to the irrigation industry. The aim of the 2 days is to give people a comprehensive overview of the….. Read more

New Zealand Certificate in Irrigation System Performance Assessment

September 18 @ 8:30 am - September 20 @ 5:00 pm

Gain the skills and knowledge to carry out assessments of irrigation systems in order to determine how efficiently they are operating. This Level 4 NZQA certificate runs for 7 months and requires some previous knowledge and experience in irrigation. You….. Read more

Irrigation Accreditation

Smart Irrigation