Syngenta is launching a new mobile phone app to help growers plan when to spray for aphids potentially carrying barley yellow dwarf virus (BYDV).
BYDV Assist will determine when cereals crops are most at risk of transmission of the virus using the TemSum model from AHDB.
Growers will be able to enter their location, drilling date, emergence date and variety, and using this data the app will calculate when the 170-day degree threshold for emergence of potentially virus-carrying aphids has been reached, and alert the grower.
The app will also offer a spray forecast to aid with spray timing decisions and is set to be released for both Apple and Android devices at the end of July.
In a Syngenta survey, 98 per cent of growers saw BYDV as a risk to their crop going forward this autumn, following the loss of Redigo Deter (prothioconazole + clothianidin).