Biodynamie appliquée archive

Applied Biodynamics — Issue 009 (Fall 1994)

Issue 009 (Fall 1994) records fall practices from grower interviews, debates biodynamic compost, and gives practical BD 500 inspection criteria.

Published by The Josephine Porter Institute Download PDF
Featured archival image for Applied Biodynamics — Issue 009 (Fall 1994)

Applied Biodynamics Issue 009 (Fall 1994) is organized around fall fieldwork, composting, and the evaluation of horn manure (BD 500). Its largest feature records telephone interviews with biodynamic growers; companion articles explain biodynamics for newcomers, contrast ordinary and biodynamic composting, and discuss how a maker might inspect BD 500 after excavation.

Fall practice reported by growers

For “Fall in the Biodynamic Garden,” Hugh J. Courtney interviewed 11 practitioners by telephone in July and August 1994. Each was asked the same three questions: how the biodynamic preparations were used during fall; how fall composting was handled; and whether anything about the preparations had stood out during the year. Courtney emphasizes that each farm has its own rhythm and conditions. The surviving pages present the responses as shared experience, not as one universal schedule.

The available interviews show wide variation. Growers describe fall applications of BD 500 horn manure, horn silica, Barrel Compost, BD 508 horsetail, and in some cases BD 507 valerian. Some apply sprays to specific crops or before harvest; others connect them to cover crops, orchard residues, frost, drought, excessive moisture, or sequential-spray routines. Several accounts also link preparation work to ordinary farm management: manure handling, tillage, compost maturity, cover cropping, irrigation, crop timing, and the condition of the soil.

The survey pairs practical operational detail with growers’ named field observations. One discussion attributes severe flea-beetle pressure partly to manure management rather than expecting preparations alone to solve it. Another considers whether immature compost contributed to cutworms and dying brassicas. Compost descriptions range from smaller garden piles to operations handling dozens or hundreds of tons, with different ratios of manure, straw, hay, weeds, crop residue, and bedding. Jennifer Erickson reports compost temperatures of 140–145°F; others describe pile covering, turning, the insertion of the BD 502–507 compost preparations, and the use of BD 508 on beds or piles.

The available scan prints the eleven-person roster and interview responses through number 10. Printed pp. 7–8, which carried the continuation, are absent; the sections below draw only from the available compost and BD 500 pages.

What biodynamic compost adds

In “Compost or Biodynamic Compost?” (printed pp. 11–12), Hugh J. Courtney contrasts the physical management of a compost pile with the “building-up” process he attributes to the biodynamic compost preparations, BD 502–507. He presents the six preparations as a way to condition organic material for living soil and recommends thoroughly composting manure before field use. The grower interviews show this work at different scales: Ruth Zinniker combines fresh cow manure with garden and kitchen residues (printed p. 5); Claire Hall reports preparing both garden piles and about 400 tons of manure compost with the compost preparations (printed p. 6); and Jennifer Erickson describes an approximately 10-ton pile reaching 140–145°F and continuing to mature over winter (printed p. 6).

Inspecting BD 500 after excavation

In “Further Thoughts on Making BD #500” (printed pp. 9–10, 13), Courtney emphasizes marking the horn pit, lifting the horns carefully to keep soil out, and checking the finished preparation by odor and color. He favors an earthy smell and deep rich black color, with earthy brown next in preference. Horns retaining greenish raw-manure color and odor are set aside; when a spring excavation was too early, he recommended reburying and reports that some growers saw improved material on reinspection about two weeks later. He also stresses attentive packing when making the preparation. These observations describe Courtney’s 1994 preparation-making practice; for current application directions, see JPI’s BD 500 instructions.

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Questions fréquemment posées

What fall biodynamic practices did the interviewed growers share?

Courtney recorded growers adapting BD 500, BD 501, Barrel Compost (now JPI Barrel Compound), BD 508, compost preparations, and cover crops to their farms in 1994. Kerry Sullivan describes a manure-and-straw pile for the following season, Claire Hall describes spraying Barrel Compost on vetch before plowing it in, and Jennifer Erickson reports a compost pile reaching 140–145°F. These are named grower methods and observations from the fall-practice survey.

What questions were growers asked about fall practice?

Each of the 11 interviewees was asked how they used the biodynamic preparations during fall, how they handled fall composting, and whether anything about the preparations had stood out during the year.

What signs did Courtney use to assess excavated BD 500?

In Issue 009, Courtney looks for an earthy smell and deep rich black color, with earthy brown next in preference. He set aside horns that retained greenish raw-manure color and odor. For material excavated too early in spring, he recommended reburying and reported improvement when some horns were checked about two weeks later. He also emphasized marking the pit so every horn can be recovered.

What frost observations did Kerry Sullivan report after BD 507 sprays?

In the Issue 009 interviews, Kerry Sullivan reported spraying BD 507 valerian on paste tomatoes before a late frost that reached 28°F and seeing no tomato damage; beans not sprayed that night were injured. Before a second frost, he sprayed both tomatoes and beans and reported no damage in either crop. This is a named two-event field observation from the 1994 grower interview.