1. Vineyard architecture. The vineyard blocks were designed in short rows  that limit soil erosion. The direction of the rows is defined to decrease the risk of accidents for agricultural workers.
2. An increase in biodiversity for reestablishing endangered native species. At the start of the Calcu project, an agreement was signed with Conaf (Chilean National Forestry Corporation) to plant more than 4,500 native plants in ravines close to the vineyards. In this way many endangered native species were reintroduced into the area, including chaguales, huinganes and algarrobo trees. This helps to control erosion and to recover the habitat for endangered fauna such as hummingbirds, grisons, and the tucúquere owl.
3. Minimal application of agrochemicals. In the management of the Calcu vineyards at Marchigüe there is a strong preference for products permitted by organic viticulture, even though Calcu is not certified as organic. Applications of sulphur to combat powdery mildew are carried out only twice or three times a year (70% less than normal for organic vineyards), thanks to a monitoring method that indicates when conditions are conducive to the growth of fungi.
4. Use of sheep for controlling weeds and increasing productivity in weak areas.
5. Preference for the hiring of local workers and suppliers.

See Sustainability Policy (PDF)