Published field comparisons report encouraging biodynamic-program results for root growth, soil microbial biomass, and particulate organic-matter carbon. Explore the measured treatments and observe how your own farm responds.
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Biodynamic farming joins compost, crop rotations, biodynamic preparations, and close observation in a whole-farm practice. Field research has measured encouraging results. In a 2019 Washington and Wisconsin comparison, Goldstein, Koepf, and Koopmans reported 12–39% greater root dry matter and 10–37% greater root length in preparation-inclusive biodynamic treatments than in organic comparisons, depending on crop, year, and application.
Selected Washington biodynamic rotations measured 7% more soil microbial biomass than organic rotations. In Wisconsin, a biodynamic program that included a distinct nettle-and-manure field spray measured 4,664 versus 4,289 kilograms of particulate organic-matter carbon per hectare, a 9% difference (p = 0.05). These are results for the studied management programs and treatments, not a measured effect of one JPI retail preparation or Barrel Compound alone.
Weather, crop choice, soil, and rotation all shape a growing season. Record when preparations are applied and track roots, soil observations, and crop conditions across seasons; that makes the research useful for learning from a particular farm. Explore JPI's research resources and preparation information alongside the published study.
Does published field research report benefits from biodynamic preparation programs?
Yes. Goldstein and colleagues (2019) measured 12–39% more root dry matter and 10–37% more root length in biodynamic preparation programs than organic treatments, depending on crop, year, and application.
What soil result did the Washington biodynamic trial measure?
The Washington field comparison found greater wheat root growth, soil microbial biomass, and soil organic matter with biodynamic prepared compost and field sprays. Selected biodynamic rotations had 7% more microbial biomass than organic rotations.
What did the Wisconsin biodynamic trial observe?
A biodynamic program that included a nettle-and-manure field spray measured greater maize root growth and root health, plus 9% more particulate organic-matter carbon than the organic treatment.
Why does the article call for attention to farm conditions?
Weather, crop, and rotation influence field outcomes. Recording each season and treatment helps growers see how a biodynamic program performs under their own farm conditions.
