Thermal Images Give Thirsty Plants a Voice
Story supplied by LU Press Office
Lancaster University is leading moves to develop a state-of-the-art irrigation system, which lets growers know when their plants are thirsty, thanks to a £1.49 million project funded by the Department for Environment Food and Rural Affairs, the Horticultural Development Council and industrial partners.
As plants become too dry they begin to show signs of stress and warm up. This warming shows up as distinct warm spots on a leaf viewed with a thermal imaging camera.
Conventional and thermal camera imaging systems on an irrigation boom would be passed over the crops at regular intervals collecting information about how much water each plant needed. This information would be fed into an automated irrigation system which would then robotically deliver a precise, targeted amount water to each plant, according to demand.
This could have a profound impact on horticulture and some types of agriculture, making more efficient use of limited water supply, reducing crop variability and waste and thereby saving growers money.
Within the next four years, scientists, working with horticulturalists and a consortium of 11 small and medium sized enterprises across the UK, hope to develop an automated high-tech watering device, of a type which has never been used before in the UK
The project also brings together Lancaster University researchers in the Centre of Sustainable Agriculture at the Lancaster Environment Centre with partners at the University of Dundee and industry experts at Pera Innovation and East Malling Research.
Project co-ordinator Professor Bill Davies, Director of the Lancaster Environment Centre, said: "This technology is potentially revolutionary in that it lets the plant tell you when it is thirsty and exactly how much water it needs.
Through this system we are trying to double water use efficiency, which in itself would be impressive and important. If this works well it could have the potential to increase efficiency by ten times or more."
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