Biodynamics detail, Part 3 of 3
Part 1 of this article gave some context regarding the condition of modern agriculture. Part 2 provided an overview about Biodynamics. Now it’s time to describe the Biodynamics detail. How is BD used?
How is Biodynamics practised?
The origin of Biodynamics is rooted in eight lectures delivered in 1924 by Austrian philosopher Rudolf Steiner, called The Spiritual Foundations for the Renewal of Agriculture. He was the creator of the “spiritual science” of Anthroposophy. It seeks to link science with spiritualism in education, health, the arts, and agriculture.
In these lectures, he set out the precepts of a healthier and sustainable agriculture. It’s about revitalising the soil to produce better quality food. A convinced teetotaller, he had no interest or involvement in wine at all!
Steiner wasn’t an agriculturalist either, so modern BD practices have gradually evolved under his guiding principles.
Firstly, Biodynamics uses a range of unique natural homoeopathic preparations. These are in very dilute form. They promote the microbial life of the soil and boost plant health to combat diseases. See the table* below.
Spray on the vines to harden the plant and reinforce root development and photosynthesis, 2-4 times per yearPlace inside the compost pile as enrichment, helps take up of trace elementsPlace inside the compost pile as enrichment, aids flowering, and fruiting
|BD 500||Cow manure. Fermented in a Cow horn by burying in the soil for six months during autumn and winter.||Spray on the soil 2-4 times per year to increase microbial activity and soil health.|
Basis of the compost pile along with plant waste
|BD 501||Ground silica (quartz). Mixed with water in a Cow’s horn, then buried in soil for six months during spring and summer.|
|BD 502||Yarrow flowers. First buried in a Stag’s bladder.|
|BD 503||Camomile flowers, First buried in a Cow intestine||Place inside the compost pile as enrichment, fixes nitrogen in soil|
|BD 504||Stinging Nettle (whole plant)||Place inside the compost pile as enrichment, provides nutrition|
|BD 505||Oak bark. First buried in a Cow, Sheep, Pig or Horse skull.||Place inside the compost pile as enrichment, raises pH of soil|
|BD 506||Dandelion flowers. First buried in Cow mesentery.|
|BD 507||Valerian flower juice||Spray liquid over the compost pile as enrichment, encourages earthworms|
|BD 508||Horsetail Tea||Spray soil and vines as a fungicide|
*based on articles by André Ostertag, Maria Thun, Jamie Goode and DemeterUSA
BD 500 and BD501 are the two essential sprays for the soil and vines. However, composting is also fundamental. The compost is a mixture of cow manure and vegetable waste that is augmented by preparations BD502-BD507. They are said to help break down the compost and make trace elements available to the plant.
Applying the preparations
The preparations are diluted down to homoeopathic levels in rainwater. They are then activated, or “dynamised” by extensive stirring before use. Stirring takes between 20 minutes and an hour, first clockwise, then anti-clockwise, creating a vortex. The preparations are used within 3-4 hours while still fresh.
A “dynamiseur” is used to stir the preparations, essentially a small cask with rotating paddles. Substances become dissolved evenly, and microbial life in the water reproduces rapidly. Hence even very dilute quantities of BD500 contain enormous numbers of microbes.
Cover crops e.g. Chicory, Lupin, and Vetch grow between vine rows. These provide “green manure” to increase humus in the soil and help fix nitrogen. They also promote biodiversity hold water and prevent soil erosion. Weed control is by mulching, ploughing or grazing.
As with organics, copper and sulphur are still allowed, as a barrier to fungal diseases. Bordeaux mixture (copper sulphate and lime) treats downy mildew, and powdered sulphur treats Oïdium (powdery mildew). These are toxic substances. However, BD farmers say the quantities they use are far smaller as their vines are more resistant to fungal diseases.
Pest control, rather than pest elimination, maintains biodiversity and food chains. Natural vineyard predators will keep pest populations at a low level. Some vineyards also employ chickens, geese and ducks to do the job!
Another control method, advocated by Biodynamic extremists such as Nicholas Joly, is known as peppering. He claims that spraying a dynamised liquid containing the ash of the dead pest works. However, I remain unconvinced that revenge is sufficient!
It’s likely that it is the microbial life of the soil that is the most crucial factor. A great deal of scientific research is being undertaken to explore how the soil, microbial life and plants interact. These relationships are highly complex and remain poorly understood.
Bacteria are known to perform a broad range of transformative biochemical functions. These include photosynthesis, carbon and nitrogen fixing and making trace elements available. One of the most complex biological materials on Earth, a handful of healthy soil contains billions of micro-organisms. The beneficial role of BD is the promotion of diversity and abundance of these micro-organisms to help plants thrive.
The sowing and planting calendar
Furthermore, the application of treatments should coincide with the rhythms of the Earth and various cosmic cycles. Hence, Maria Thun devised the “biodynamic sowing and planting calendar”, based on her experimental plant research over many years. In this timetable, four “forces” are ascribed to the individual parts of the plant as follows:
Earth (and Earth signs) with Roots
Water (and Water signs) with Leaves
Air (and Air signs) with Flowers
Fire (and Fire signs) with Fruits and Seeds
The calendar is complex and divides each year into days (and times of day). These are either favourable or unfavourable for different aspects of work. Timings depend on the movements of the Earth, Moon, and planets against the Zodiac constellations, which change every few days.
BD is a broad church
Many BD winegrowers do not use the cosmic aspects. Some see those ideas as a step too far; others find that the suggested timings are impractical. Instead, many biodynamic growers have developed practices that suit their particular vineyard situation and needs. No wonder there is differing and sometimes conflicting advice given by BD consultants.
As a result, BD is a broader church than it may first appear. All will use the preparations, but the timing aspects remain entirely optional.
BD needs far more time spent on vineyard management and labour. As a result, some BD vineyards are more costly to operate than their chemical counterparts. However, others work out cheaper. The economics largely depend on upon the size of the vineyard and its location. It is one reason why many BD vineyards tend to be relatively small. However, there are large estates, for example, Querciabella in Italy, Chapoutier in France and King Estate in Oregon, USA.
One of the ongoing problems facing most organic and BD vineyards is that they are rarely in isolation. That brings the possibility of contamination from neighbours using chemicals. Where possible, creating natural buffer zones is beneficial.
Some organic and BD growers have even been said to encourage the spread of vine viruses, pests, and diseases. For example, there was a recent case in Burgundy. Emmanuel Giboulot faced six months in prison and a hefty fine for refusing to spray pesticides against flavescence dorée. Thankfully, he won his court case on appeal.
Should BD be certified? Personally, I’m for it. For biodynamic certification, producers must first meet organic production criteria as defined by various organic certifying bodies (e.g. Ecocert, IFOAM, and others). Specific rules therefore vary. However, the certifier has to be an independent third party that has recognition from the country in which it operates. It also requires a conversion process. The vineyard must have adopted BD methods for three or more years before achieving certified status.
Secondly, producers must use the biodynamic preparations BD500-BD508. Any adherence to the cosmic calendars is however entirely optional and is never part of certification.
Demeter is a primary certifying body. Its agricultural standards are not unique to viticulture or concerned with wine quality. Demeter certifies all forms of BD agriculture. Hence, Biodyvin, (the SIVCBD, Syndicat International des Vignerons en Culture Biodynamique) established in 1993. It has a wine quality charter and wine tasting tests.
The merits of certification
As with organics, there are arguments about the merits of certification in the Biodynamic community. On the one hand, it’s a guarantee of adherence to BD practices. Some growers are not certified and won’t mention BD on the label either. One or two others have abandoned certification, saying they derived no tangible benefit from it. Certification still has little consumer relevance, and this represents a significant challenge to recognition and perhaps wider acceptance.
There are several reasons for not being certified:
- Producers are trialling or still in a conversion process which takes several years;
- Producers don’t want increased bureaucracy or are unwilling to pay the certification fees;
- A minority are reluctant as this would limit their ultimate freedom to use chemicals in a crisis;
- Some winemakers don’t want to be defined by their production methods.
Like organic certification, biodynamic certification means “wine made from biodynamic grapes” rather than “biodynamic wine”. It does not cover winemaking.
In my opinion, BD has the potential to make the best-tasting authentic wine because the grapes are the best possible quality. However, clumsy winemaking can still easily ruin all that effort. Some biodynamic (and organic) winegrowers, extend their ideas into the winery, and there has been a rebirth of “Natural wines”.
Postscript: Natural wines
The term “natural wines” has recently become the description for wines made “as naturally as possible”. However, this descriptor is so loose that for me it has little meaning or consensus.
This category may include wines made with organic and biodynamic methods. Or then again not. Natural wine is never a shorthand term for either Biodynamics or organics.
Such natural wine ideas range widely. For example, the shape of fermentation and storage vessels. I have seen egg-shaped and pyramid designs. Others have successfully revived the use of terracotta amphora or try to make no sulphur wines or “Orange wines”. One or two insist on playing classical music to the wine and claim beneficial effects. Others have been experimenting with specific sound frequencies like white noise.
More understandably, the use of wild yeasts, no fining or filtering, and low-sulphur regimes seek to make wine “more natural”. But these are in common practice and so hardly new or revolutionary.
I welcome Natural wines, they are anti-technology, add interest and diversity, and the intentions are often praiseworthy. But this is no Second Coming of the Messiah. Some “natural” wines are brilliant and take immense skill to produce. Some, however, are awful, and no more than the Emperor’s New Clothes. Caveat Emptor.
Biodynamics seeks to grow the best grapes in the best environmental way. What happens next is still reliant on winemaking ability. Wine does not make itself.
I hope that these three articles encourage you to try BD wines. Please join in with the debate and share your views.
Do you want to find Biodynamic wines? Ask me!
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