The impact of winery wastewater for irrigation of vineyards on soils, crop growth and wine quality

Project Number
WW 19-14

Project title
The impact of winery wastewater for irrigation of vineyards on soils, crop growth and wine quality

Project leader
Myburgh, P A

Team members
Myburgh, P A
Hunter, J J
Fourie, J C
Du Plessis, K
Volschenk, C G
Meyer, A
Shange, P
Lategan, E L
Fouche, G W
Ochse, C H
Van Huyssteen, I
Freitag, K
De Voss, R
Cwala, Y

Project description
International requirements, as well as national legislation, are putting pressure on wine producers regarding the responsible management of winery wastewater, which may have large-scale detrimental impact on the environment. This already led to technological innovation with regard to the treatment of winery wastewater. This is not necessarily a sustainable solution, as wastewater treatment may result in high energy use and emission of greenhouse gases, contributing to global warming. With our current electricity shortage in South Africa, further difficulties may arise due to the high energy demand required for treatment. The wine industry has co-funded various projects in the past to develop technology that will contribute to responsible management of wastewater, and more particular, use of winery wastewater by means of crop irrigation. Currently, the Department of Water Affairs and Forestry is drafting new legislation aimed at wineries, to allow beneficial crop irrigation as a General Authorization. In the Western Cape wine industry, most vineyards need irrigation and the ideal situation would be to implement a sustainable use of winery wastewater for wine grape irrigation by adding winery wastewater to existing irrigation water resources. This practice has already been performed by various wineries for decades and it is believed that there is little or no impact on wine quality and character as a result of this. Until now, the impact of this practice has, however, not been studied comprehensively. Adding winery wastewater to our current irrigation water (augmentation) may well become a necessity in the future with current water shortages becoming more and more an alarming reality. However, the pollution of underground water is strictly monitored and should be prevented at all cost. Thus, to know the impact of irrigating with winery wastewater on the chemical composition and physical structure of the soil, grapevine performance, and wine quality, is indispensable. It is envisaged that irrigating vineyards with irrigation water with added winery wastewater may alter the wine character and overall quality, compared to vineyards irrigated with clean irrigation water. The project will be a multidisciplinary study to evaluate the impact of augmented winery wastewater on vineyard soils, vineyard performance and determining wine quality differences, if any, due to varying irrigation water quality as the main objective.

Poster(s)
Mulidzi, R A and Myburgh, P A. 2012. Soil depth and temporal variation in microbial enzyme activity in a vineyard soil irrigated with winery wastewater. Poster. 34th National Congress of the South African Society for Enology and Viticulture. 14-16 November, Somerset West, South Africa.

Schoeman, C, Hunter, J J, Myburgh, P A, Strever, A E and Du Toit, M A. 2012. Grapevine response to irrigation with winery wastewater: yield, grape and wine composition and sensory quality. Poster. 34th National Congress of the South African Society for Enology and Viticulture. 14-16 November, Somerset West, South Africa.

Osche, C H, Fourie, J C, Theron, H and Myburgh, P A. 2012. Effect of irrigation with augmented winery wastewater on the performance of Avena sativa L. and Pennisetum glaucum used as interception crops in a vineyard near Rawsonville. Poster. 34th National Congress of the South African Society for Enology and Viticulture. 14-16 November, Somerset West, South Africa.

Howell, C L, Myburgh, P A and Lategan, E L. 2013. Assessing the feasibility of recycling winery wastewater for vineyard irrigation – soil, grapevine and wine responses. Poster presented at 15th AWITC Conference. 13-18 July 2013, Sydney, Australia.

Presentation(s)
Myburgh, P A. 2011. Progress regarding the project to determine the effect of winery wastewater irrigation on soil conditions and grapevine responses. Presentation to the Goudini Winery Co-operative. 25 May, Rawsonville, South Africa.

Mulidzi, R A, Clarke, C, Myburgh, P A and Roychoudhury, A. 2012. The effects of winery wastewater irrigation on the chemical properties of four different soils. Paper presented at the 34th National Congress of the South African Society for Enology and Viticulture. 14-16 November, Somerset West, South Africa.

Myburgh, P A, Howell, C L and Lategan, E L. 2012. Preliminary results on the response of soil and grapevines to irrigation using recycled winery wastewater. Paper presented at the 7th CIGR International Technical Symposium. 28 November, Stellenbosch, South Africa.

Mulidzi, R A, Clarke, C, Myburgh, P A and Roy Choudhury, A. 2013. The effects of winery wastewater irrigation on the chemical properties of four different soils. Paper presented at the 6th IWA Specialized Conference. Winery 2013: Viticulture and Winery Wastes. 26-30 May, Narbonne, France.

Howell, C L, Myburgh, P A and Lategan, E L. 2013. A study to assess the feasibility of recycling winery wastewater for vineyard irrigation – soil and grapevine responses. Paper presented at 6th IWA Specialized Conference, Winery 2013: Viticulture and Winery Wastes. 26-30 May, Narbonne, France.

Myburgh, P A and Howell, C L. 2013. Recycling winery wastewater for vineyard irrigation – experiment layout, evapotranspiration and grapevine water status. Paper presented at 35th South African Society for Enology and Viticulture Conference. 13-15 November, Somerset West, South Africa.

Howell, C L and Myburgh, P A. 2013. Recycling winery wastewater for vineyard irrigation – soil chemistry, plant nutrient status and grapevine responses. Paper presented at 35th South African Society for Enology and Viticulture Conference. 13-15 November, Somerset West, South Africa.

Mulidzi, R A. 2013. Feedback on the 6th IWA International Specialized Conference on Sustainable Viticulture – Winery 2013. Paper presented at 35th South African Society for Enology and Viticulture Conference. 13-15 November, Somerset West, South Africa.

Myburgh, P A. 2014. Recycling winery wastewater for vineyard irrigation – Experiment layout, irrigation and evapotranspiration. Presentation at the WRC Information Day. 28 January, Rawsonville, South Africa.

Howell, C L. 2014. Effect of winery wastewater on the soil chemical status. Presentation at the WRC Information Day. 28 January, Rawsonville, South Africa.

Fourie, J. 2014. Using cover crops to restrict accumulation of elements such as K and Na in the soil. Presentation at the WRC Information Day. 28 January, Rawsonville, South Africa.

Meyer, A. 2014. Effect of winery wastewater on the soil microbial status. Presentation at the WRC Information Day. 28 January, Rawsonville, South Africa.

Howell, C L. 2014. What was the effect of winery wastewater on grapevine growth, yield and quality? Presentation at the WRC Information Day, 28 January, Rawsonville, South Africa.

Article
Posthumus, D. 2014. Recycling winery wastewater for vineyard irrigation. What are the soil and grapevine responses? SABI Magazine, v. 6 (2) (p. 8-9)

Dissertation
Schoeman, C S. 2012. Grape and wine quality of Vitis vinifera L. cv. Cabernet Sauvignon/99R in response to irrigation using winery wastewater, University of Stellenbosch, Stellenbosch.

FinalReport.pdf

Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors