Perspectives

Conversion to Biodynamics

At the heart of it is this: life on earth depends on a constant supply of new energy from the cosmos. If the sun ever turn off, it would get pretty cold here on earth! 

Conversion to Biodynamics - The Josephine Porter Institute
The idea of converting to biodynamics from conventional or biodynamic agriculture can seem intimidating. In part, this is because the language around biodynamics can sometimes seem inaccessible. At the heart of it is this: life on earth depends on a constant supply of new energy from the cosmos. If the sun ever turn off, it would get pretty cold here on earth! Almost everything valuable about nutrition comes from the cosmos. Even when we cultivate soil by increasing organic matter, where did that organic matter come from? It's mostly composed of materials that used to be air, plus the energy captured in photosynthesis. When we remember that humus is more than 50% carbohydrates -- all produced from photosynthesis drawing on sunlight -- it helps us remember that it is not merely a metaphor or poetic image to say that all agriculture depends on the cosmos. At JPI, we are here to help your with this transition. 

We begin with 500 Horn Manure as a foundational biostimulant for soil to help return vitality to tired fields. That's always step number one. It doesn't make sense to put living plants into dead soil, so the first thing to do is bring more life to your soil.

Alternatively, we can use the Pfeiffer™ Field and Garden Spray as a way to bring all the biodynamic preparations to the field in a single pass. The Pfeiffer™ products contain the 500 Horn Manure and the Compost Preparations. This premium product is proprietary to JPI and brings the full force of all the biodynamic preparations to your field in a single pass.

Plan biodynamic soil building across complete rotations

Pfeiffer calls for a clear farm plan extending “over at least two complete crop rotations.” He connects this horizon with renewing disturbed organic soil structure and applying manure a second time to the same parcel. Begin careful manure treatment, gather materials for compost, and use the preparations as the conversion begins; then follow the developing soil and crops through the full rotations. This is a soil-building plan, not a calendar-year or certification timetable.

Source: Ehrenfried Pfeiffer, Soil Fertility, Renewal & Preservation (revised ed., 1947), Chapter Eight, p. 71.

Choose the crops in each rotation for the individual farm

Pfeiffer says every region, soil type, climate, and set of marketing conditions calls for its own crop rotation. He calls for a legume among the crops every four years and describes five-to-seven-year rotations, often used in northern countries, as more beneficial than an intensive three-year sequence. Examples include clover sown with summer grain, beans or peas in place of summer grain, or a fodder legume the farm can use. The two-complete-rotations planning horizon above concerns how long to follow the conversion; this guidance concerns how to choose and sequence crops within each rotation.

Source: Ehrenfried E. Pfeiffer, Soil Fertility, Renewal & Preservation (revised ed., 1947), Chapter Eight, printed pp. 69 and 71.

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Questions fréquemment posées

How far ahead does Pfeiffer suggest planning biodynamic conversion?

Pfeiffer recommends a farm plan spanning at least two complete crop rotations, with manure care, compost preparation, and soil observation beginning as conversion starts.

How does JPI begin soil care during conversion?

JPI begins with BD 500 horn manure as a soil spray, alongside compost-making and living-root cover crops. Use current preparation directions and observe how the soil and crops respond.

When might a grower choose Pfeiffer Field and Garden Spray?

JPI presents Pfeiffer Field and Garden Spray as a single-pass field option containing horn manure and the six compost preparations. It complements the wider conversion plan rather than replacing compost and crop rotation.

How should crops be chosen for a conversion rotation?

Pfeiffer advises tailoring crop sequence to local soil, climate, region, and market, with a legume among the crops at least every four years. The article presents the two-rotation horizon as a soil-building plan.