SA winemakers adopt more holistic approach
South African winemakers and viticulturists are increasingly committed to a holistic wine growing approach: nurturing the soil, respecting the ecosystem and working with nature to reduce effects on the Cape Floral Kingdom, the smallest yet richest plant kingdom on earth which boasts an astounding biodiversity of plant and animal life.
According to Wines of South Africa (Wosa), producers are extremely conservation conscious. In just over a decade, they have set aside nearly 144 000 hectares as conservation land, and committed to restoring it back to its original pristine nature.
Guidelines on sustainability were introduced as early as 1998 with over 95% of the growers and cellars stick to the guidelines. Since 1974, the Wine of Origin scheme guarantees the information on the label that states where the grapes came from, the vintage year and the variety or varieties.
Stephan Joubert, viticulturist at Boschendal believes the making of award-winning wine begins with sustainable farming in the vineyards.
“Our winemaking team applies a sustainable approach to each aspect of the winemaking process, from the attentive use of cover crops to protect the vineyards to increased energy efficiency in the cellar using solar power. These measures ensure that the unique influence of natural terroir can be tasted in each glass of premium wine,” he said.
Boschendal was recently awarded the WWF Conservation Champion status, presented to South African wine farms that are committed to addressing environmental concerns and meet a set of rigorous conservation criteria. These include demonstration of exceptional environmental commitment and leadership, and a comprehensive eco-friendly management plan with detailed targets to encourage continuous improvement.
“In the vineyards we are currently experimenting with various cover crops which capture moisture from the air, serving not only to increase organic material matter in the soil but also to inhibit weed growth, manage erosion and help with the control of pests,” added Joubert.
“Computerised soil probes measure soil moisture and vine stress, allowing us to apply selected irrigation at minimal intervals using harvested rain water when possible.”
The clearing of more than 500 hectares of alien vegetation at Boschendal has had a significant and positive impact on the birdlife, the free movement of wildlife and most noticeably on the flow of the small rivers that are fed by the mountains.
"Four big streams now flow all year round. Before we cleared the alien vegetation they were dry for most of the summer months," said Andre Lambrechts, who has been the driving force behind the successful clearing operations at Boschendal. Minimal integrated pest management also encourages natural control.
“We are committed to preserving South Africa’s diversity of soils, climate and geography which creates a treasure trove of winemaking possibilities. It is enlightening to see that there is an increasing trend among South African wine producers to preserve the fynbos and renosterveld (indigenous vegetation) of the Cape Floral Kingdom, and minimise the further loss of the threatened natural habitat,” he concluded.