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A range of antitranspirants has been tested under glasshouse conditions for their effectiveness in reducing the water consumption of grapevines.

The substances tested included three that form plastic films and the inhibitor phenylmercuric acetate which is known to be elective at suppressing transpiration in cotton.

The only substance found to be an effective transpiration suppressant was Acropol.

Repeated applications at 12-day intervals were necessary and the substance had a morphogenetic erect, bringing about a significant increase in the leaf area but a decrease in dry matter production. In short-term experiments both Acropol and Polycote S720 reduced carbon dioxide uptake in the light and carbon dioxide output in the dark.

When Acropol was applied to plants in the field it did not affect the rate of sugar accumulation in grapes.

Studies with Antitranspirants on Grapevines (Vitis vinifera var. Sultana)

1968, Australian Journal of Agricultural Research, vol 20, pages 57 – 64

csiro 118

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