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Sultana grapevine, either on own root system or else grafted to one of several different rootstocks, was irrigated with solutions of chloride salts under glasshouse conditions for three consecutive growing seasons.

Growth was progressively suppressed by salinity in al! vines, but scions on stocks of Vitis Champini showed linear decreases in growth, whereas self-rooted vines and scions on Harmony and 1613 stocks gave curvilinear responses in which the rate of decline in growth was greater at lower salinities than at higher salinities. Scions on 1613 rootstocks performed poorest.

With the exception of Dogridge, rootstocks growing under glasshouse conditions generally lowered the chloride concentration in leaves of scions below that of self-rooted vines.

Canes on 1613 stock accumulated much higher concentrations of chloride than did the other vines. Rootstocks lowered sodium and raised potassium concentrations in all plant parts.

Salt treatment resulted in greatly elevated phosphorus concentrations within scions. Magnesium showed increases in leaves and canes with increasing external salinity, whereas calcium did not. Nitrogen concentrations did not change with rootstock or salt treatment.

The results have relevance for irrigated horticultural areas along the River Murray, for which the ionic composition of the watering medium was formulated, and for situations where saline wastewater is to be reutilized

Growth and Mineral Composition of the Sultana Grapevine as influenced by Salinity and Rootstock

1985, Australian Journal of Agriculture Research, vol 36, pages 425-434

csiro 729

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