Wind can desiccate young vines, reducing their rate of growth and delaying establishment. This is especially important in Carnarvon, because well managed, one year old bench grafted vines planted in July or August can produce a crop 16 months later and reach full production the following season. On mature vines, wind displaces foliage. This exposes bunches to the sun, resulting in sunburn. Wind generates dust that settles on to berries - grapes cannot be washed before sending to market.
Dust also encourages mites that attack the foliage and can affect the berries.
Wind causes leaves to rub on the berries and bunches to rub against canes, resulting in the unsightly scarring of berries. Birds Several types of bird affect table grapes in Carnarvon. They attack the berries after they have started to colour but before sugar levels are high enough to allow harvesting. Two species of crows, Little Crow and Australian Crow, eat the whole berry leaving the stalks. Several local species of honey eater, including the Grey Breasted White Eye, damage many berries.