Module 2: “Environmental Needs and Sustainable Wine Production” provides an exploration of the pivotal role that environmental stewardship plays in the modern wine industry. This module aims to enhance understanding of the complex interplay between viticulture and environmental factors, with a particular focus on sustainable practices that can lead to more resilient and eco-friendly wine production methods. Participants will delve into the latest strategies and technologies in sustainable viticulture, learn about crucial resource management techniques, and gain practical knowledge on implementing these practices in their operations. This comprehensive approach not only prepares learners to effectively manage environmental challenges but also equips them to contribute positively to the global push for environmental sustainability in wine production.

Climate change is increasingly impacting several aspects of viticulture, including vine phenology, grape composition and growing suitability.

Budding, flowering, fruit-set, veraison, and harvest are all taking place, on average ten days to two weeks sooner than they used to. Hotter growing-season temperatures are making it harder for growers to achieve balance in the fruit compounds (sugar, acids, tannins)—and, therefore, in the finished wine.

Images: Veselin Rashev, Bulgarian Winemaker

Winters are significantly milder, vines are often coming out of dormancy far earlier than they used to, making them more vulnerable to frost. Some regions have had a pattern of mild winters, followed by sudden cold snaps in early spring, which kill off vulnerable young growth.

Image: Jérome Genée

Wildfires are devastating to vineyards, people, and property. But the rolling clouds of smoke can cover vineyards and ruin wines produced from vines that were never in physical danger from the flames. Australia, South Africa, and the US have all seen wines affected by smoke taint over the last ten years.

Image Wine Spectator: The Kincade fire threatens a vineyard in the hills above Geyserville, Calif. (JOSH EDELSON/AFP/Getty Images)

Wildfires are devastating to vineyards, people, and property. But the rolling clouds of smoke can cover vineyards and ruin wines produced from vines that were never in physical danger from the flames. Australia, South Africa, and the US have all seen wines affected by smoke taint over the last ten years.

Some regions have seen more rainstorms in the past few years, but less water in recent years, and multiple heat waves. Grapevines may be more tolerant of water shortages than other plants, but too much stress can interfere with photosynthesis, delay or inhibit bud ripening, reduce winter hardiness, or cause the vine to cease production altogether.

Europe is more affected by hailstorms, which can be devastating to crops. Hail damage to vineyards also affects the next harvest.

Image (David Bokuchava/stock.adobe.com)

The National Academy of Sciences suggests that the general shift of warmer temperatures poleward will lead to a “huge shake-up in the geographic distribution of wine production” in the next half-century. Cooler regions are becoming more suitable for viticulture, and in some of the warmer regions, viticulture may be lost. Some appellations AOC may lose prestige and price, their land too, while others will become more interesting to investors.

Over centuries, European vintners have developed a profound knowledge about grapes, environment, and techniques that yield the most distinguishable wines. In many regions, this knowledge is reflected in the system of wine geographical indications (GI), but climate change is challenging this historical union. The legal rigidity of the GI system can impair the ability of wine regions to adapt and to preserve traditional wine production in the context of climate changing.

Image: Maps show areas in red will have extreme heat and drought stress in 2015. Maps created by Conservation International

(Activity 1: Read a booklet detailing the environmental challenges facing the wine industry)

All agricultural crops, including vine and grape growing, are dependent on and inextricably linked to climate and weather. Climate change is increasingly affecting several aspects of viticulture, including vine phenology, grape composition and suitability for cultivation. Heat waves, forest fires, heavy and prolonged rainfall and hail are already affecting yields and the quality of grapes, as well as their alcohol, acid and sugar content. Although grapes are grown all over the world, the production of premium wines takes place within very narrow climatic limits. A report by the European Environment Agency (EEA) on adaptation to climate change in the agricultural sector in Europe predicts that by the middle of this century climate change will have a negative impact on the development of grapes and the quality of wine in the traditional wine-growing regions of southern Europe.

Climate change has direct and indirect impacts on grape cultivation, harvests and the agroecosystems on which they depend. The direct impacts relate to changes in phenology and acceleration of ripening, changes in water supply and direct effects of increased CO2 levels on growth. Indirect impacts are the result of direct effects that negatively affect agricultural production, e.g. increases in the number and type of pests, diseases, and extreme events such as very strong winds, hail, intense heat, and frosts.

Global warming is defined as the increase of the average temperature on the Earth. This includes both atmospheric and oceanic temperatures. Since the beginning of the twentieth century, the average global temperature has risen about 1 C, with about two thirds of that rise occurring since 1960.

Grape growing regions are often classified into so-called ‘Winkler regions’ according to heat summation measured in cumulative growing degree days (GDD), a scheme originally proposed by Amerine and Winkler (1944). This method sums up the mean daily temperatures above a threshold typically set at 10°C over a 7-month ‘standard’ growing season (April–October in the northern hemisphere and October–April in the southern hemisphere). Each 1°C increment in mean temperature adds 214 GDD to the standard growing season. Therefore, if one assumes an average increase from the present of 1.5°C by 2020, cumulative heat units would increase by 321 GDD. A 2.5°C increase by 2050 would add 535 GDD to the current heat units. In addition, the predicted increase in spring and autumn temperatures will also lead to longer actual growing seasons, which are determined by the frost-free period (days between the last spring and first autumn frosts).

Precipitation patterns are also changing. In recent years, rising temperatures have resulted in winter precipitation falling as rain instead of snow, and the average snow line will shift to higher elevations. This leads to a change in river flows that rely on snowmelt. Peak flows will shift from late spring/early summer to late winter/early spring, and flows will decrease in summer, leading to dry weather. Such changes in river flows increase the risk of flooding in early spring, and there will be less water available for irrigation during the critical season. With earlier snowmelt, rainfall is projected to increase less than evaporation, so droughts will increase significantly in regions and seasons that are already relatively dry.

Тhe reduced river flows in summer in dry regions are compounded by drier soils and higher evaporation from irrigated farmlands, which will greatly increase the demand, and therefore the competition, for water. Furthermore, the greater increase in evaporation than precipitation can also be expected to accelerate salinisation in dry (and drying) regions.

Hotter temperatures cause grapes to ripen faster, bringing sugar (and alcohol) content up and acidity (which gives the wine its freshness) down, while leaving insufficient time for tannins and other essential compounds to develop.

The increase in seasonal temperature results in a shift in the growing season, thus changing the normal pattern of grape development towards an earlier onset of flowering, veraison, and ripening. Earlier vegetation means that the critical ripening period shifts to the warmer part of the season, resulting in a change in the chemical composition of the grapes: increased sugar in the fruit, lower concentrations of acids (especially malic acid) and lower levels of anthocyanins and methoxypyrazine. The higher sugar content leads to a higher alcohol content in the wine, which changes the taste and mouthfeel. The lower malic acid content, especially in white wines that do not undergo malolactic fermentation, may necessitate an adjustment of the acidity with other acids. This disturbs the natural balance in the wine. The lower anthocyanin content will adversely affect the colour of red wines.

Creating a deep and lasting bond with wine enthusiasts goes far beyond offering an excellent glass of wine. The goal is to provide an authentic experience that connects the consumer to the land, history, and culture of wine.

The consequences of global warming are causing the Vitis vinifera grapevine to adapt to grow and be grown in more polar regions than it is now. Some areas now ideal for developing a particular variety will soon no longer be so. Global warming is not uniform: there is greater warming over land, with greater warming at higher latitudes, especially in the Northern Hemisphere.

Wine regions have not all been impacted equally by climate change. Even within the same country, the effects can vary. Europe—particularly the cooler areas of Europe—seem to be seeing the biggest changes.

Region by region, climate change would shift wine production, especially in terms of grape selection. In Europe, the impact of global warming on wine growing regions would be large. The loss of the Gulf Stream would chill Bordeaux and parts of Spain, forcing a replanting toward cooler climate grapes. Even the planting of Pinot noir in Burgundy may wane as the finicky grape begins to lose viability. However, other regions would become warmer. Alsace, for example, has been experiencing a shortening of the growing season and a shift of harvest from October to September in the last three decades.

Rising temperatures inland in Spain could challenge vines to survive. The Chianti region in Tuscany is working to replant varieties that can withstand high temperatures as current ones are starting to regrow too early. Large swathes of Europe’s Mediterranean coast, particularly Italy, Greece and France, could become fully suitable for grape production by 2050, while southern England is becoming increasingly hospitable to sparkling varieties and has already had several notable vintages.

Thirty years ago it was unthinkable to have vineyards in England. Now wine consumers enjoy excellent English sparkling wines from Kent and Sussex. Denmark, Norway and Sweden are also joining the wine map, mainly producing wine from hybrid grape varieties adapted to cooler weather, but the latest good wines come from Vitis Vinifera grapes such as Riesling from Norway, planted in 2008. Belgium, popular for its beer culture, has increased its vineyard area almost 5-fold in the last 20 years.

In California, warming temperatures and a reduction in fresh water in the next half century may deliver an enormous loss of land suitable for premium grape production, especially in Napa and Santa Barbara Counties where land loss could be near 50% of current acreage. Another study suggests that these regions would be lost completely finding only the narrow coastal bands and the Sierra Nevada left suitable for production.

Where grape production is not lost altogether, more heat-tolerant grapes of lesser quality could be planted. In western North American vineyard regions located in cooler climates, such as Oregon, Washington and British Columbia, the lift in temperatures could dictate that same shift to warmer grape varieties, as well. This could prove to be a boon to those regions׳ wine production. Strangely, some forecasts include new regions׳ suitability, including Yellowstone and even the Yukon.
A study by the University of Adelaide predicts significant drought and warming in Australia, concluding that by 2060, South Australia is set to experience a 2°C rise in temperature and a 30% reduction in available fresh water. New Zealand is moving towards heat-loving varieties. South Africa, like New Zealand, is also experiencing changes in climate patterns and will need to replant vineyards with varieties that can cope with increased temperatures. China could see the largest expansion of native vines yet, as new regions open up to vine capacity.

According to Tate (2001), a five-meter rise in sea level would inundate some of the planet׳s greatest vineyards and wine-producing regions with flooding. These could include portions of Bordeaux, Portugal, New Zealand, Australia׳s Swan district, and California׳s Carneros appellation. Added to the coastal flooding, more inland vineyards could face heightening levels of salinity in ground water which could affect vine growth. Earthquake is another threat, triggered by rising sea levels. Wine regions that are at risk for this are Oregon, Washington, British Columbia, Chile, Argentina, and New Zealand.

Transitioning from the direct impacts of environmental challenges on vine health and wine production, it is essential to consider the broader regulatory and market frameworks that govern these practices. This segment delves into the various environmental regulations and market demands shaping sustainable practices within the wine industry. Understanding these requirements is crucial not only for compliance but also for positioning a winery competitively in an increasingly eco-conscious market. Here, we explore how legislation and consumer expectations drive wineries to adopt and innovate sustainable practices, ultimately influencing the entire viticulture landscape.

1. List and explain three ways climate change can affect grape production.
2. Research and list three adaptation strategies used by vineyards.
3. Read the case study on Emiliana Organic Vineyards. Answer the following questions:
            • How does climate change affect Emiliana’s operations?
            • What specific challenges does the vineyard face?
            • How does Emiliana adapt to these challenges?

● The impact of climate change on the global wine industry: Challenges & solutions: https://www.sciencedirect.com/science/article/pii/S2212977414000222#bib36

● Managing grapevines to optimise fruit development in a challenging environment: a climate changeprimer for viticulturists: https://onlinelibrary.wiley.com/doi/10.1111/j.1755-0238.2009.00077.x#b9

● Adapting viticulture to climate change: https://www.vineas.net/medias/da877124-f141-46d9-a75f-abe1eacdb8c7.pdf

● The EU Wine sector Briefing: https://www.europarl.europa.eu/RegData/etudes/BRIE/2023/751399/EPRS_BRI(2023)751399_EN.pdf

● Managing grapevines to optimise fruit development in a challenging environment: a climate change primer for viticulturists – M.M Keller
● https://www.fossanalytics.com/en/news-articles/wine/keeping-a-cool-head-in-a-warming-climate
● https://www.fossanalytics.com/en/news-articles/wine/keeping-a-cool-head-in-a-warming-climate
● https://www.three-choirs-vineyards.co.uk/is-climate-change-affecting-vineyards
● https://www.pnas.org/doi/10.1073/pnas.1210127110
● https://www.sciencedirect.com/science/article/pii/S2212977414000222
● https://www.meiningers-international.com/wine/hailstones-are-getting-bigger
● https://ives-technicalreviews.eu/article/view/7514https://climate.axa/publications/will-spring-frost-become-the-new-norm-in-france/
● https://silvabalcanica.pensoft.net/articles.php?id=132176

In Learning Unit 2.1, we explored viticulture’s significant environmental challenges, including climate change impacts, resource depletion, and ecological pressures. These challenges underline the need for innovative, sustainable farming practices that help mitigate environmental stress while ensuring vineyard productivity. Learning Unit 2.2 will explore practical and sustainable agricultural techniques, providing insights into methods such as crop rotation, integrated pest management, and organic farming. Implementing sustainable practices allows vineyard managers to actively tackle environmental challenges, improve vineyard resilience, and ensure the long-term health of their land and crops.

Sustainable viticulture commonly can be described as ecological agriculture. Instead of thinking only about the economic value of the crops, it also focuses on the efficient use of non-renewable resources, on growing better food products and on improving the lives of the vine growers themselves.

One of the less known aspects of sustainable viticulture is the fact that it allows farmers to transform their vineyards into giant recycling centers. Plants and animals waste turn into fertilizer, inter-row crop rotation enriches the soil, and rainwater diversion improves irrigation systems. Than not only saves money but also natural resources.
More than that, sustainable agriculture reduces the need for chemicals and pesticides and is a step forward in the transition to organic farming practices.

Vine is a drought-resistant crop. Thanks to the deeply located root system and a number of features for adaptation, it can be spread on poor and dry soils, obtaining satisfactory harvest without watering. But this does not mean that we can grow it anywhere and not caring to improve watering and food regime. Overestimating its drought resistance, we often plant it on hills, on shallow soils or arid regions.

How can we determine timing of watering? Plants’ appearance will help us. Of course, this is not an exact guide. But in the absence of an opportunity to determine soil moisture, it will be useful to us. If in the beginning of the growing season the tops of the shoots stand up, and the top leaves are not so strongly curled, it means that the vine has a great need for water. Later on the change in the color of the leaves can serve as a signal for watering. They become darker than normal, the edges of those at the bottom turn yellow and burn.

The depth on which the soil should be moistened by vegetation watering systems, is about 1 m. The main mass of roots is concentrated in this layer, vine obtains almost all its water on that depth. Vines can be watered via the surface, subsoil, by drip irrigation or using the rain. When it comes to water vineyards usually suffer from two main problems: ineffective irrigation systems and resources waste. The best way to successfully manage water is to use native vines with suitable rootstock, adapted to the different weather changes.

Next step is to create efficient watering systems to avoid negative consequences for the soil and wildlife. An option is to direct the rainwater to the irrigation system. Some farmers even build small sewage treatment plants to use the waste water.

Crop rotation is probably the oldest and simpliest method of soil protection. While the process may seem chaotic, it actually follows a strict logical order so that the crops growing today provide nutrients for the future crops. In most cases, the idea is not that complicated. Alternate planting of cereals after legumes, trench crops after cereals, to maintain soil fertility and limit erosion. According to experts, one of the most significant advantages of crop rotation is that it prevents the spread of diseases, such as bacterial infections and decay. It is also easy to solve the problem of some pests, such as scab on the vine.

Good old weeding!

This method may not be practical for large farms, but you can safely take care of smaller plantations avoiding the help of chemicals. Hand weeding is very labour intensive, it is usually used where the crops are very gentle or there is no access to agricultural machinery. Mowing and grazing are especially effective before plants produce seeds.

Crop rotation is an effective and sustainable vineyard practice aimed at enhancing soil fertility, improving soil structure, and managing pests and diseases naturally. By alternating crops or employing cover crops with varying nutrient requirements and root structures, vineyards can optimise nutrient availability, protect soil from erosion, and reduce pest prevalence without chemical interventions. Particularly in organic and biodynamic vineyards, leguminous crops that fix nitrogen are often rotated with grasses and other beneficial cover plants to maintain balanced soil nutrition and health. The inclusion of cover crops can also contribute significantly to biodiversity, creating habitats for beneficial insects and organisms that further sustain vineyard ecosystems.

Weeding techniques in sustainable vineyards often avoid chemical herbicides, instead favouring mechanical, manual, or biological methods. Practices such as mechanical cultivation, mowing, grazing with livestock, or manual weeding help manage weeds without harming the soil’s biological activity or structure. For example, small-scale organic and biodynamic vineyards across Europe regularly utilise grazing animals like sheep or chickens to control vegetation growth naturally, reducing machinery use and simultaneously fertilising the soil. Integrating these practices creates a resilient agricultural environment that supports long-term productivity and ecological balance in the vineyard.

Implementing sustainable agriculture practices in vineyards not only protects the environment but also enhances vine health and productivity.

Directive 91/414 of the EU, which regulates the implementation of plant protection products, requires that the rules of Good Plant Protection Practice and the principles of Integrated Plant Protection (IPM – Integrated Pest Management) are applied when using them. According to this directive, IPM is a rational application of a combination from biological, biotechnological, chemical, physical, agrotechnical and selection measures, by which the use of chemical pesticides is limited to the minimum necessary to maintain the population of the pest below the threshold of economic harm. It is a combination of rational measures to achieve acceptable effectiveness in the fight against pests and includes their long-term prevention. The main goal is to limit the use of chemical (PP) to a certain minimum.

IPM is an acronym for Integrated Pest Management, a philosophy and approach that includes biological, chemical and organizational control strategies. IPM is the intelligent use of pest control actions that will lead to beneficial economic, environmental, and sociological results. It is applicable to agricultural pest management, environmental protection and public health. Pests on vegetable plants often occur as a result of complex interactions between a lot of circumstances, such as host, growing area, nutrition, production practices, outbreaks, environment, and others. To have successful control, must be applied interdisciplinary approach, which depends on the problem.

In connection with the development of IPM, the concept of Economic Injury Level (EIL). This is such an amount of a certain type of enemy, disease-causing agent or weed on a leaf, fruit, plant, m2, etc., where the damage from it, expressed in value, is more than double the costs necessary to carry out chemical control.

1. Select an organic or biodynamic vineyard of your choice (from the case studies or online research).Identify and list at least five specific sustainable farming techniques used by the vineyard. Explainbriefly how each method positively impacts the vineyard’s ecosystem and wine production.
2. Create a hypothetical cover crop rotation plan suitable for a small-scale organic vineyard (5 hectares)over a three-year cycle. Include at least three different crops/plants and justify your choices basedon their benefits to soil fertility, pest management, and biodiversity.
3. Watch the virtual vineyard tour provided by the U.S. Sustainable Winegrowing Summit, available on YouTube. As you watch, carefully note at least three sustainable practices aimed specifically atsupporting biodiversity within the vineyards (such as cover crops, insectary gardens, animalintegration, or water conservation methods). Write a brief reflection (around 200 words)summarising the biodiversity practices you observed. Explain their ecological significance, and reflecton how these practices may positively influence grapevine health, soil quality, and overall vineyardsustainability. Additionally, suggest one or two improvements or variations that could be adapted todifferent climate or vineyard conditions.

Principles of Sustainable viticulture and the benefits of sustainable practices:

● https://www.oiv.int/node/3207 – OIV General principles of sustainable vitiviniculture-Environmental- Social- Economic and Cultural aspects
● https://link.springer.com/chapter/10.1007/978-3-319-18857-7_16 – Wine Tourism Moving Towards Sustainable Viticulture? Challenges, Opportunities and Tools to Internalize Sustainable Principles in the Wine Sector
● https://www.tandfonline.com/doi/pdf/10.2147/IJWR.S68003 – Sustainable winegrowing: current perspectives Angela Mariani & Antonella Vastola
● https://agriculture.ec.europa.eu/farming/organic-farming/organics-glance
● https://agriculture.ec.europa.eu/sustainability/environmental-sustainability/sustainable-agricultural-practices-and-methods_en
● https://agriculture.ec.europa.eu/sustainability/environmental-sustainability
● https://www-vineyardteam-org.translate.goog/podcast/

Techniques for water management and soil conservation in vineyards:

● https://www.sciencedirect.com/science/article/pii/S0167198706001358
● https://www.sciencedirect.com/science/article/pii/S0167198709001019
● https://stswatertreatment.com/winery-water-footprint/
● https://www.youtube.com/watch?v=Wrck3BZLMnc
● https://sipyours.com/blogs/non-alcoholic-wine-beer-and-cocktails/12-innovative-water-conservation-techniques-in-non-alcoholic-wine-production
● https://www.regenerativeviticulture.org/toolkit/water-use/
● https://www.sciencedirect.com/science/article/pii/S1161030108000464

Crop rotation in the inter-row of the vineyards:

● https://www.youtube.com/watch?v=AyWmZQD3Ci8 – Crop Rotation for Weed Suppression – Organic Weed Control
● https://www.organic-crop-production.com/organic_crop_production/crop_rotation_organic_farms/management_weeds_crop_rotation.htm
● https://www.dpi.nsw.gov.au/__data/assets/pdf_file/0006/1158315/Alternative-weed-control-measures-for-vineyards.pdf

Use of organic and biodynamic practices in grape growing:

● https://www.youtube.com/watch?v=EWLFLdhhNks – An Introduction to Biodynamic Viticulture
● https://www.youtube.com/watch?v=nm4L83J64XQ – What is BIODYNAMIC WINE – Understanding the Biodynamic Vineyard and Winemaking practices
● https://agriculture.ec.europa.eu/farming/organic-farming/organics-glance_
● https://oeno-one.eu/article/view/2470 – Conversion to organic and biodynamic viticultural practices: impact on soil, grapevine development and grape quality

● Atanasov N., M. Vitanov, E. Loginova, E. Ilieva, 2005. Integrated protection of greenhouse crops from diseases and pests. Sofia–Publishing House Videnov&son and PantaNeo, 159.

● Bahariev D., B. Velev, S. Stefanov, E. Loginova, 1992. Diseases, weeds and pests of vegetable crops. Zemizdat – Sofia, 339.

● Bogatsevska N., Y. Stancheva, Hr. Boteva, St. Masheva, E. Loginova, V. Harizanova, X. Samaliev, D. Hristova, D. Karadzhova, V. Nikolova, V. Aleksandrov, T.Toshkova, D. Grozdanova, 2008. Guide to integrated management of pests in vegetable crops. National Institute of Plant Protection. Ministry of Agriculture and Forestry. Sofia. 238.

● Karov S., R. Andreev, 2000. Plant protection of a courtyard biological and integrated garden. Bio-organic gardening №2, 151.

● Stefanova G., 2012. Essence and importance of Plant Protection in the contemporary conditions of development of the European Union and Bulgaria. http://nauka.bg.6. ARfD – Acute Reference Dose is the amount of a chemical that can be consumed in a single meal without causing harm. In the UK, it is usually set 100 times lower than the acute No Observed Effect Level (NOEL) established from laboratory tests.

● Ekman, J. 2007. Risky business – managing on-farm assurance. Proc. Moraitis Hydroponics 2007 Australian Hydroponic and Greenhouse Industry National Conference, pp.101 – 103.

● Gillespie, D. 2002. Biological and integrated control in vegetables in British Columbia: The challenge of success. Bull. IOBC/WPRS 25(1): 73 – 76.

● GLOBALGAP (formerly known as EUREPGAP formed in 1997), announced in September 2007, is the key reference for GAP in the global market place. It is a pre-farm gate standard that translates consumer requirements into agricultural production practices.

● Good Agricultural Practices are “practices that address environmental, economic and social sustainability for on-farm processes, and result in safe and quality food and nonfood agricultural products” (FAO COAG 2003 GAP paper). The scope of these four pillars varies widely.

● Jørgensen L.N. & Kudsk P. (2006) Twenty years’ experience with reduced agrochemical inputs: effects on farm economics, water quality, biodiversity and environment. Proceedings of the HGCA conference – Arable crop protection in the balance: Profit and the environment. 25-26 January 2006. 16.1-16.10.

● MRL – Maximum Residue Limit is the maximum concentration of pesticide residue legally permitted in or on food commodities. MRLs are established for specific pesticide/crop combinations.

● Practical Hydroponics & Greenhouses, Issue 45, 1999: Greenhouse IPM – Around the World, pp. 58-63.

● Pretty J. (2005) Sustainability in agriculture: recent progress and emergent challenges. Issues in Environmental Science and Technology, 21, 1-15

Viticulture and winemaking are deeply intertwined with the natural environment. The success of a vineyard and the quality of its wines depend heavily on the management and sustainable use of natural resources. Among these, water, soil, and biodiversity stand out as pivotal elements. Let’s explore the role of the critical natural resources in viticulture and wine making in depth, focusing on their importance, management, and impact on viticulture and wine production.

Viticulture, the cultivation of grapevines, relies on several critical natural resources to ensure healthy vine growth and high-quality grape production. The key resources are:

Water is one of the most critical resources in viticulture and wine production. Its availability and management significantly influence grapevine health, yield, and the overall quality of the grapes. In wine production, water is also essential for various operational processes. Here are the key aspects of water use:

The interactions between water use in viticulture and winemaking and climate change are complex and multifaceted, involving changes in water availability, irrigation demands, grape quality, and sustainability practices.

Soil is the foundation of any vineyard, influencing vine health, grape quality, and the unique characteristics of wine. Soil is a key component of the concept of “terroir.” The physical, chemical, and biological properties of soil all play critical roles in viticulture.

Biodiversity refers to the variety of life in and around the vineyard ecosystem. A biodiverse environment supports sustainable viticulture by enhancing resilience to pests and diseases, improving soil health, and promoting a balanced ecosystem.

The interactions between water use in viticulture and winemaking and climate change are complex and multifaceted, involving changes in water availability, irrigation demands, grape quality, and sustainability practices.

By fostering biodiversity, viticulture can build resilience to climate change, reduce reliance on external inputs, and enhance the sustainability of winemaking. This approach benefits the environment and supports longterm productivity and quality in the wine industry. Some case studies on enhancing biodiversity from the wine industry are presented below.

Sustainable viticulture requires an integrated approach to managing water, soil, and biodiversity. Natural resource management could be aided by:

1. Sustainable Certifications

• Certifications like Organic, Biodynamic, and Sustainable Winegrowing ensure adherence to best practices.

2. Embracing Technology and Innovation

• Precision agriculture, remote sensing, and data analytics optimize resource use.

3. Academia and Community Engagement

• Collaboration with local academia, as well as communities ensures up-to-date scientific knowledge and solutions, long-term resource availability and environmental stewardship.

Energy use in the wine industry has significant implications for both climate change and sustainability, influencing greenhouse gas (GHG) emissions, production costs, and the overall environmental footprint of winemaking. Understanding and addressing these implications is key to creating a more sustainable wine industry.

By reducing energy use and transitioning to sustainable practices, the wine industry can mitigate its impact on climate change while enhancing its long-term economic and environmental viability.

Waste is in essence an unused resource. Waste management in the wine industry plays a critical role in addressing climate change and promoting sustainability. The byproducts and waste generated during viticulture and winemaking can have significant environmental impacts if not managed properly, but sustainable waste practices can also create opportunities for resource recovery, energy production, and reduced carbon emissions.

Sustainable waste management in the wine industry is essential for reducing GHG emissions, conserving resources, and ensuring long-term economic and environmental viability. By embracing circular economy principles and innovative waste practices, the industry can transform waste challenges into opportunities for climate action and sustainability leadership.

Water, soil, and biodiversity are the lifeblood of viticulture and wine making. Each resource plays a unique and interconnected role in determining vineyard health and wine quality. At the same time, viticulture and wine making require energy and generate waste. By adopting sustainable practices and leveraging technology, the wine industry can ensure the availability of critical resources is preserved for future generations and mitigate the impact of wine production on sustainability while producing exceptional wines that reflect the essence of the specific terroir.

The amount of water needed to produce a bottle of wine can vary depending on factors such as location, vineyard practices, and the type of wine. On average, it takes about 632.2 liters of water to produce a 0.75-liter bottle of wine.

This includes:

• Green water: Rainwater that infiltrates the soil and is available to plants during their growth cycle.
• Blue water: Fresh surface and groundwater used for irrigation.
• Grey water: Water needed to dilute pollutants and manage wastewater.

It’s important to note that these values can differ significantly based on specific vineyard practices and regional conditions.

Effective water management and soil conservation techniques are critical for sustainable viticulture. These practices enhance water use efficiency, prevent soil degradation, and ensure long-term productivity in vineyards. Here are some commonly used techniques:

Strategies for Mitigation and Adaptation

• Water-Saving Irrigation Techniques: Drip irrigation and regulated deficit irrigation can optimize water use while maintaining grape quality.
• Improved Vineyard Design: Designing vineyards to maximize natural water retention, such as through terracing or soil amendments.
• Use of Drought-Resistant Varieties: Planting grape varieties that require less water or are more resilient to drought conditions, especially in the context of a warming climate.

https://www.agrisource.org/en/7_114/5df0fb1a4cdcbe0b1739f27a/Planting%20droughttolerant% 20varieties.html?form=MG0AV3

• Recycling and Reusing Water: Utilizing treated wastewater for irrigation and other winery processes. Water recycling systems can save up to 70% of water used in winery operations.

• Collaboration and Research: Industry-wide efforts to develop best practices for water management and share resources among producers.

By addressing these challenges proactively, the wine industry can mitigate the impacts of climate change on water use and ensure long-term sustainability.

There are several industry-wide efforts aimed at developing best practices for water management and sharing resources among wine producers:

Soil health is essential for cultivating high-quality grapes and for ensuring sustainable viticulture, especially in the context of a changing climate. This module explores key soil conservation techniques and strategies for resilient soil management in a changing climate.

• Environmental: Reduced water wastage, improved soil health, and enhanced biodiversity.
• Economic: Lower costs for water, fertilizers, and erosion repairs over the long term.
• Climate Resilience: Increased ability to withstand droughts, floods, and other extreme weather events.

Implementing these techniques helps ensure the sustainability and productivity of vineyards while reducing environmental impacts.

By prioritizing resilient soil management, the viticulture industry can adapt to climate change while maintaining productivity and sustainability.

On average, it takes about 0.6 kWh of energy to produce a 750 ml bottle of wine. 0.6 kWh of energy is equivalent to working on a laptop for 10 hours or equivalent to the energy consumption of an energy-efficient refrigerator for a day. Here’s a breakdown of the energy consumption that is needed to produce a 750 ml bottle of wine:

• Agricultural Phase: Energy use occurs in activities like fertilization, soil tillage, pruning, and harvesting. These processes often involve the use of fossil fuels and petrochemicals for operating the machines that assist those activities.
• Manufacturing Phase: This phase includes grape crushing, fermentation, pressing, packaging, and bottling. Over 50% of the total energy consumption occurs during pressing

There are several energy management practices commonly used in viticulture and wine production to save energy:

1. Energy Audits: Conducting regular energy audits helps identify areas where energy is being wasted and opportunities for improvement. This involves a thorough survey of current energy consumption and the development of measures to reduce it.
2. Efficient Cooling Systems: Cooling is one of the most energy-intensive processes in wine production. Using modern, high-efficiency cooling systems and optimizing their operation can significantly reduce energy consumption.
3. Solar Power: Installing solar panels to generate renewable energy can offset a significant portion of the energy used in winery operations.
4. LED Lighting: Replacing traditional lighting with energy-efficient LED lights reduces electricity consumption and lowers energy costs.
5. Energy-Efficient Equipment: Upgrading to modern, energy-efficient equipment for tasks such as bottling, fermentation, and aging can lead to substantial energy savings.
6. Heat Recovery Systems: Implementing heat recovery systems to capture and reuse heat generated during fermentation and other processes can improve energy efficiency.
7. Smart Irrigation: Using smart irrigation systems that optimize water use based on real-time data can reduce the energy needed for pumping and distribution.
8. Electrification of vehicles: Using electric tractors and other vehicles reduces the need for fossil fuel energy.
9. Sustainable Building Design: Designing winery buildings with energy efficiency in mind, such as using proper insulation and natural lighting and ventilation, can help reduce heating and cooling needs.
10. Employee Training: Educating employees about energy-saving practices and encouraging energy-conscious behavior can contribute to overall energy reduction.

Renewable energy sources, such as solar and wind power, are increasingly being integrated into viticulture to promote sustainability and reduce the carbon footprint of wine production. Here are some examples:

• Reduced Carbon Footprint: By using renewable energy sources, wineries can significantly reduce their greenhouse gas emissions.
• Energy Independence: Renewable energy systems, especially when coupled with energy storage capacities, can provide wineries with a degree of energy independence, reducing their vulnerability to energy price fluctuations.
• Cost Savings: Over time, the investment in renewable energy can lead to cost savings on energy bills.
• Sustainability: Integrating renewable energy aligns with the broader goals of sustainable viticulture, promoting environmental stewardship and long-term viability. It also aligns with trends in consumer behavior – favoring sustainable and environmentally conscious products and practices.

The production of wine generates waste, primarily from the grape processing and winemaking stages. Overall, around 30% of the weight of grapes used ends up as waste. Here’s a breakdown of the main types of waste generated:

• Grape Pomace: This includes the skins, seeds, and stems left over after pressing the grapes. Grape pomace can account for 25-45% of the total weight of the grapes used.
• Grape Stems: These are removed during the destemming process and represent 2.5-7.5% of the total weight of the grapes.
• Vine Prunings: The waste generated from pruning the vines, which is around 5 tons per hectare on average.
• Lees: The sediment that forms at the bottom of the fermentation tank, consisting of dead yeast, grape skins, seeds, and stems. This can account for 3.5-8.5% of the total waste in the wine making process.

In addition to waste from the production and fermentation of grapes, there are other types of waste products generated in the winery:

• Maintenance: Maintenance operations such as cleaning, generate waste products such as: plastic, packaging, cleaning cloths, sprays and solvents, personal protective equipment. Maintenance operations such as repair and renovation generate waste products such as: oils, paints, glues, lamps, batteries, metals.
• Production and logistics: Activities such as bottling and preparation for shipping generate waste products such as: cardboard, paper, glass, plastic, inks and glues (for closing boxes), corks, wood (in case of defective pallets).

The waste products generated in the wine making process can be repurposed for various uses, such as composting, animal feed, or even the production of other products like grappa, grape seed oil, and skincare products. In addition, waste reduction, reuse and recycling can be implemented in winery operations.

• Composting Grape Pomace: Grape pomace, which includes skins, seeds, and stems, can be composted to create organic fertilizer. This reduces waste and provides valuable nutrients for the soil.
• Wine Lees for Animal Feed: Wine lees, the sediment left after fermentation, can be processed and used as animal feed. This repurposes waste and provides a sustainable feed source.
• Wastewater Treatment: Wineries can treat wastewater using biological, physiochemical, or advanced oxidation methods. Treated water can be reused for irrigation, reducing the need for fresh water. Another way to treat wastewater is through constructed wetlands. These wetlands act as carbon sinks and help break down organic matter.
• Modular Wastewater Treatment Systems: Prefabricated treatment systems can be installed to treat wastewater more efficiently than traditional pond systems. These systems are cost-effective and have a smaller footprint.
• Anaerobic Digestion: Organic waste, such as grape pomace and pruning waste, can be processed in anaerobic digesters to produce biogas. This renewable energy source can be used to power winery operations.
• Recycling Packaging: Wineries can implement recycling programs for glass bottles, cardboard, and other packaging materials to reduce waste sent to landfills.

In essence, waste represents unutilized resources. Therefore, it is important to identify which part of the production process generates waste, why waste is generated, what volumes and types of waste are generated at each stage. For this identification, generally a waste audit is conducted. After a waste audit is conducted, an action plan is drafted based on the audit’s findings. The process generally follows the Plan-Do-Check-Act (PDCA) management method.

In the case of waste management, the PDCA steps involve:

• Plan: Establish waste management goals and identify the types and volumes of waste generated at each step of the wine making process.
• Do: Design an action plan with measures and interventions to achieve the defined waste management goals.
• Check: Review the implementation of measures and interventions from the action plan and check progress towards meeting the defined waste management goals.
• Act: Prioritize implementation of the best-performing measures and interventions and revise the action plan based on the results of the implementation review.

1. Research and identify at least three specific water conservation methods applicable to vineyards.Develop a concise water conservation plan suitable for a hypothetical small vineyard (around 5hectares), briefly explaining each chosen method’s expected benefits. Write a short paragraphreflecting on how the proposed strategies could positively impact water sustainability and grapequality.
2. Conduct a virtual “field walk” of a sustainably managed vineyard through online tours or videos.Identify and list three biodiversity-enhancing strategies (e.g., insectaries, bird habitats, diverseplantings) observed in the vineyard. Write a brief reflection on how each identified strategycontributes to vineyard sustainability, ecological health, and improved grape quality. Suggest oneadditional practice that could further enhance vineyard biodiversity.
3. Identify common types of waste generated in vineyards and wineries. Research sustainable wastemanagement practices such as composting, recycling, or biomass energy production. Design a simplewaste management strategy outlining how a small vineyard might sustainably handle each identifiedwaste type.

• http://biodiversityadvisor-dev.sanbi.org/wp-content/uploads/2014/11/201411_WWF-SA-Biodiversity-and-Wine-Initiative-Case-Study.pdf
• https://www.digicomply.com/blog/sustainable-wine-production-cultivating-a-greener-future
• https://sustainablewinegrowing.com.au/case-studies/using-technology-to-improve-water-management-penley-estate/
• https://margaretriver.wine/wp-content/uploads/2023/02/MRWA-Sustainability-Case-Study-2_Final.pdf
• https://www.evineyardapp.com/blog/2021/06/10/case-study-evineyard-helping-save-10-30-of-vineyard-irrigation-water-and-improve-grape-quality-in-california-vineyards/

Overview of natural resources critical to viticulture (water, soil, biodiversity)

• https://husfarm.com/article/the-impact-of-sustainable-viticulture-on-biodiversity-conservation-in-europe
• https://www.ciencia-e-vinho.com/2024/05/05/viticulture-and-the-european-unions-common-agricultural-policy-cap-historical-overview-current-situation-and-future-perspective/
• https://www.ajevonline.org/content/ajev/74/2/0740033.full.pdf
• https://www.frontiersin.org/journals/climate/articles/10.3389/fclim.2021.654953/full
• https://worldoffinewine.com/news-features/climate-change-wine-industry
• https://www.researchgate.net/publication/303979811_The_Impact_of_Climate_Change_on_Viticulture_and_Wine_Quality
• https://winefolly.com/deep-dive/climate-change-vs-wine-a-snapshot-of-year-2050/
• https://lup.lub.lu.se/luur/download?func=downloadFile&recordOId=4091904&fileOId=4092108

Techniques for water management and soil conservation in vineyards

• https://stswatertreatment.com/winery-water-footprint/
• https://www.youtube.com/watch?v=Wrck3BZLMnc
• https://sipyours.com/blogs/non-alcoholic-wine-beer-and-cocktails/12-innovative-water-conservation-techniques-in-non-alcoholic-wine-production
• https://www.regenerativeviticulture.org/toolkit/water-use/

Industry-wide initiatives

• https://www.portoprotocol.com/news/the-benefits-of-efficient-water-management-in-the-wine-industry/
• https://www.youtube.com/watch?v=6LMPM2gz-m4
• https://agriculture.ec.europa.eu/news/high-level-group-wine-outlines-policy-recommendations-future-eu-wine-sector-2024-12-17_en
• https://www.awri.com.au/industry_support/viticulture/water-management/
• http://academyofwinebusiness.com/

Soil health management

• https://thegrapevinemagazine.net/2022/09/best-practices-for-soil-protection-in-the-vineyard-auto-draft/
• https://thegrapevinemagazine.net/2023/01/improving-soil-health-in-the-vineyard/

Energy management

• https://large.stanford.edu/courses/2022/ph240/drescher1/
• https://sustentabilidade.vinhosdoalentejo.pt/en/best-practices-in-cellar/energy/reduce-energy-consumption-and-increase-energy-optimisation-in-the-cellar
• https://www.weincampus-neustadt.de/en/forschung/dominik-durner/mitarbeiter-und-team-neu/energiemanagement-und-ressourcenkontrolle-im-weinbau
• https://www.pv-magazine.com/2020/03/31/a-good-year-for-solar-agrivoltaics-in-vineyards/
• https://www.mdpi.com/2071-1050/11/23/6781

Waste management

• https://sustentabilidade.vinhosdoalentejo.pt/en/best-practices-in-cellar/waste/waste-management-reduce-reuse-and-recycle
• https://www.intechopen.com/chapters/1164167
• https://vintnerproject.com/wine/how-winemaking-waste-is-being-put-toward-new-uses/
• https://thegrapevinemagazine.net/2024/04/best-practices-for-wastewater-management-in-the-winery/