Real-time, accurate test kits that will allow farmers to better monitor fertiliser use on their land, with test results sent instantly to their computer or phone, are in the planning stage. Photo / RNZ / Rebekah Parsons-King
Real-time, accurate test kits that will allow farmers to better monitor fertiliser use on their land, with test results sent instantly to their computer or phone, are in the planning stage. Photo / RNZ / Rebekah Parsons-King
Associate Professor of physical and chemical sciences Deborah Crittenden said at the moment it was hard to detect phosphate in waterways as it was colourless and odourless.
“Currently there isn’t a simple, chemical-free way of monitoring phosphate levels , but we’ve already developed very sophisticated ways of sensing phosphate in our bodies so we are going to learn from nature to develop novel light-sensitive biosensors.”
Associate Professor of physical and chemical sciences Deborah Crittenden says there isn't a simple, chemical-free way of monitoring phosphate levels at present. Photo / Supplied / University of Canterbury
With the preliminary science done, proving that they could identify phosphates and capture them in waterways, the team wanted to create a useable device for farmers, she said.
“We want to provide farmers with real-time, accurate test kits that will allow them to better monitor and control fertiliser use on their land, with test results sent instantly to their computer or phone.
“Recent nutrient management laws introduced by the government require them to pay if they are predicted to breach certain levels of fertiliser run-off in waterways, and the advice we’ve received from farmers is that there is strong demand for a tool that accurately measures actual phosphate levels in waterways.
“That’s exactly what we’re planning to deliver.”
If farmers knew how much phosphate was running off into waterways they could either reduce the amount of fertiliser they used or do more to prevent run-off, Crittenden said.
