WINETECH Technical Yearbook 2019

applied per ha per year. Note the unwanted ponding of municipal wastewater which was observed at the site (Photo 8D). Shannon The municipal wastewater dam at Shannon has a sophisticated control system that can turn irrigation on and off. The system will also stop irrigating when the permitted amount of N per year has been applied to a particular area.

wastewaters is N. Limits for elements in wastewater are not given in absolute values, but in amount of element applied per ha. ACKNOWLEDGEMENTS The South African Society for Enology and Viticulture (SASEV) for awarding the prize for the best article in 2014. Winetech for funding of the prize for best article in the SAJEV journal. Funding for the technical

tour was also provided by the Local IWA Organising Committee. The ARC Infruitec- Nietvoorbij for the opportunity to undertake the technical tour. All my hosts in New Zealand who showed exceptional hospitality and showed such an interest in the South African wine industry.

CLOSING REMARKS In South Africa and New Zealand, there is some level of legislation regarding irrigation with wastewater. Information pertaining to dairy effluent is readily available online for the New Zealand dairy industry. In New Zealand, beneficial irrigation with dairy and municipal wastewater is strived for. The element of concern in dairy and municipal

– For more information, contact Carolyn Howell at howellc@arc.agric.za.