Spring brings Psa symptoms
08 September 2016
As spring sap begins to flow and vines come out of winter dormancy, Psa symptoms are being reported. Spring is a high-risk season for Psa, and growers are recommended to start monitoring vines to understand how Psa is unfolding on their orchards this spring. To date, some reports from around the regions include:
- Edgecumbe: exudate is being seen on some leader cankers and suckers retained as graft options.
- Waikato: sites previously affected by Psa are showing exudate in male and female buds.
- Hawkes Bay: some Psa positive sites are seeing symptoms on more plants – mainly younger vines in more stressed areas. Some Hayward and G3 symptoms are appearing worse than the same time last year.
- Waihi and Whanganui: both regions are showing spring symptoms.