A new Australian research project is aiming to replace chemical fungicides with ultraviolet light in the fight against powdery mildew - a disease that can wipe out up to 30 per cent of strawberry crops each year.  

The four-year initiative, co-invested in by Hort Innovation Frontiers and led by the Queensland Department of Primary Industries (QDPI), will test UV-C light technology across strawberries, capsicums, cucurbits and table grapes, with the goal of helping growers reduce costs and improve sustainability. The project will validate the effectiveness of UV-C light treatment under varying conditions and will evaluate dosage requirements and biological mechanisms of UV-C tolerance in powdery mildew populations to determine optimal dosage levels. 

Overuse of fungicides can lead to resistant fungal strains, not to mention the high cost of frequent applications. UV-C light offers a non-chemical approach, promoting sustainable agricultural practices, increased productivity, and minimisation of harm to beneficial insects and the environment. 

Eduardo Barbosa, Research and Development Manager at Hort Innovation, said: “As prices increase, growers continue to look for ways to reduce costs and get more benefits for less inputs. This technology could save growers money in a time when costs are at their highest.  

“It will also help to reduce losses for growers. According to the Australian Horticulture Statistics Handbook for FY23/24, the Australian strawberry industry produced 80,741 tonnes of strawberries last year, meaning more than 24,000 tonnes (30 per cent of yield) could be lost annually to this disease if it is not prevented. We’re proud to support initiatives that bring together expertise and innovation to solve issues like this for the benefit of Australian growers.” 

Two international technology partners will be involved in the project bringing their cutting-edge equipment to the trial, including robotic and tractor-mounted UV systems. 

Aligning to the automation and mechanisation driver identified in the Factors Driving Horticulture Productivity report, this project is an example of how advanced tools can boost productivity and reduce input costs.  

To further support industry knowledge and engagement around projects just like this one, Hort Innovation is launching a three-part webinar series linked to the Factors Driving Horticulture Productivity report. The series will showcase key elements influencing productivity and highlight projects like the UV-C initiative. Details are as follows: 

To register for these webinars, follow the linked webinar names above.