ADAS plant pathologist Dr Erika Wedgwood said: "This survey is designed to advise the nursery stock panel on how best to invest the levy.
"It will gather 'baseline' information on current approaches to crop protection along with pest, disease and weed control concerns. This will help us to promote economically viable 'better practice' methods and to identify future research priorities."
The survey has been posted to growers and can be downloaded via the HDC website. The deadline for responses, which can be submitted anonymously, is 4 May.