Conference Proceedings

Physiological, growth, yield and quality responses of 'Shiraz' berries manipulated using PRD and drip irrigation

MJ Collins, EWR Barlow, R Wood, G Kelley, S Fuentes, LE Williams (ed.)

Proceedings of the Seventh International Symposium on Grapevine Physiology and Biotechnology | INTERNATIONAL SOCIETY HORTICULTURAL SCIENCE | Published : 2005

Abstract

A study was conducted to investigate the effect of partial rootzone drying (PRD) in comparison to drip irrigation with two different water levels (0.45 and 0.9 ETc) on the physiological, growth, yield and quality responses of nine-year old 'Shiraz' grapevines in north-eastern Victoria, Australia. The amount of water rather than the application of PRD had a more significant effect on vine response. Average berry weight was unaffected but yield and berry number was reduced through influences that arose the previous season as well as the current season. There was some evidence that the application of PRD resulted in the maintenance of leaf function as measured by photosynthesis, transpiration a..

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