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Zoning in on Psa risk and winter chill
13 June 2019

The Psa Risk Model shows current and forecast daily assessments of Psa infection risk based on weather. This gives growers a heads up of upcoming high-risk periods to assist planning of pruning and spray rounds.

Through the leaf-fall period, application of winter rate copper to protect new leaf scars is recommended, and after pruning rounds copper should be applied to protect pruning wounds.

Weather forecasts are also available via the model, as are chill unit calculators showing seasonal and historical chill unit data. Chill unit comparisons are available across years and between locations.

A reminder that when logged in you can also click the ‘Station Locations’ link to the right of the options box to see exactly where the weather stations are in your area.

Kiwifruit Vine Health

25 Miro St
Mount Maunganui
Tauranga 3116

Tel:  0800 665 825
Fax: 07 574 7591