Kōrero: Viticulture

Grapevine leafroll symptoms

Grapevine leafroll symptoms

Grape viruses cause a general decline in the health of infected plants. Viruses are easily transmitted from infected to healthy plants during grafting, or via sap-sucking insects. Vines infected with leafroll virus have poor health, and poor-quality, low-yielding fruit. Some infected white varieties of grape do not show any obvious symptoms, but in red varieties the leaves roll downwards and often turn an intense red long before autumn.

Te whakamahi i tēnei tūemi

Private collection
Photograph by Roderick Bonfiglioli

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Te tuhi tohutoro mō tēnei whārangi:

Maggy Wassilieff, 'Viticulture - Pests and diseases', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/photograph/18322/grapevine-leafroll-symptoms (accessed 2 December 2022)

He kōrero nā Maggy Wassilieff, i tāngia i te 24 Nov 2008