How soil science keeps going during the virus lockdown

While New Zealand’ has been in COVID-19 lockdown, scientists at Manaaki Whenua – Landcare Research have developed some ingenious home-based workarounds, to ensure  their research can keep going even if they aren’t allowed to go into the field to do their fieldwork.

Jagath Ekanayake, a scientist in the CRI’s Soils & Landscapes team, is working on an MBIE Endeavour-funded project called “Hill Country Futures” run by Beef + Lamb New Zealand Ltd.

One objective of this wide-ranging work is to show whether variations in soil moisture and soil temperature can be mapped at the farm scale, to model the expected performance of different types of legume pasture.

In collaboration with AgResearch and Lincoln University, the team at Landcare Research plans to install a sensor network on six farms in the North and South Islands to record soil moisture and temperature, and then to model the whole farm in detail from that data.

Jagath’s job is to build the six sensor networks on which this work will rely.

The sensors are clever pieces of kit – they don’t just record the data for someone to come and get it later, but each sensor also communicates with a gateway base site up to 15km away. The gateway, which has cell phone connectivity, sends the data to a cloud storage site where it can be viewed and used in near real-time.

Each network has 20 dual sensors that record both moisture and temperature.

But with the lockdown in place, the fieldwork can’t begin on farm – yet.

To make up for lost time, Jagath has been building all 120 sensors on his living room table. To test the first 20-sensor network ahead of the lockdown being lifted, he has installed the directional antennae and logger for each sensor on his garden fence, while the sensors are stuck into his lawn.

Jagath says particular thanks are due to his wife, Chitra, both for allowing the living room to be taken over for the project during lockdown, and for help in assembling the sensor nodes.

Source:  Manaaki Whenua – Landcare Research

Author: Bob Edlin

Editor of AgScience Magazine and Editor of the AgScience Blog

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