677-7510. http://www.timberleafsoiltesting.com. Based on our experience,
Ecology Action recommends modifcation of Timberleaf’s soil test
results in the following areas: If gypsum is recommended, use two-
thirds of the amount recommended. Compost built using Ecology
Action’s guidelines contains about 50% soil when cured. The
Timberleaf compost recommendation assumes no soil. We
recommend that the maximum sustainable amount of compost that
should be applied is 4 cubic feet (including 50% soil). For nitrogen
and phosphorus fertilizer recommendations, remember that in a
GROW BIOINTENSIVE garden, fertilizers are used for the soil, not for
particular crops; we recommend using the maximum amount of
nitrogen and phosphorus fertilizer recommended by the Timberleaf
test for all beds.2 LaMotte Chemical Products, Box 329, Chestertown, MD 21620: Model
STH. http://www.lamotte.com.
3 Ecology Action no longer uses nor recommends the use of many
organic fertilizers because of potential problems with disease,
pesticide residue, or heavy metal toxicity.
4 Rateaver, Bargyla and Gylver, Organic Method Primer (Pauma Valley,
CA: Rateavers, 1973).
5 Pfeiffer, Ehrenfried, Weeds and What They Tell (Biodynamic Farming
& Gardening Association, 1981).
6 Addition of nutrients at these levels is optional.
7 Wood ash application should be used with care for soils with a pH
above 6.5. A maximum of 1.5 lbs should be used. 1.5 lbs contains .75
lbs potassium.
8 Finely ground.