Biochemical Stimulation of Plant Growth
Besides the Biodynamic Formulas,
there exist several other methods of stimulating seed
germination and plant growth with non-toxic substances. Several
other methods are in general use by farmers:
(1) Nutrient Presoaking ~ Presoak seeds in a solution of
nutrients that will add to the vigor of the seeds. Pure water
tends to dissolve out substances contained in the seeds’ shells
that are needed for the germination and growth. One easy method
of stimulating the germination of seeds is to soak them in an
aqueous extract of the full-grown plant from the preceding crop.
Low-voltage direct electrical current can facilitate the
electrophoresis of nutrients into the seeds, as described in the
review of ElectroCulture.
(2) Acid Scarification ~ This technique is recommended
for thick-shell seeds. Place dry seeds in a glass container and
cover them with concentrated sulfuric acid (sp. gr 1.84) for 5
minutes. Pour off the acid and wash the seeds very thoroughly
with fresh water to remove any residual acid. Never add water to
the acid; it will spatter violently. Always add acid to the
water. The seeds should be planted immediately while wet.
(3) Moist-Chilling ~ Also known as Vermiculization or
Stratification, this technique of preconditioning seeds
accelerates the after-ripening of seeds by exposing them to low
temperature (0-10 degrees), moisture, and air for a period of
time. Moist chilling is most effective when applied after hot
water presoaking. Seeds are mixed with two volumes of sand and
are kept in plastic bags in a refrigerator or outdoors. At the
end of the after-ripening period some of the seeds may begin to
germinate while in storage. The seeds can be separated from
their medium by shaking the mixture on a screen. The seeds
should be planted immediately before they dry out.
(4) Thiourea ~ Aqueous solutions (0.5-3%) stimulate
germination, but inhibit later growth. Therefore seeds should be
soaked no longer than 12 hours, and must be thoroughly rinsed
with fresh water.
(5) Potassium Nitrate ~ Seeds will germinate faster when
placed in sand moistened with 0.2% aqueous potassium nitrate.
Rewater with pure water rather than additional nitrate solution.
(6) Hydrogen Peroxide ~ 30% hydrogen peroxide also is
effective as a stimulant of germination. Very dilute hydrogen
peroxide also accelerates later growth if used only
(7) Gibberillin ~ When seeds absorb water, the hormone
gibberillin appears in the embryo and is translocated to the
aleurone layer, where it activates the metabolism to initiate
sprouting. Gibberillin causes the rapid growth of beans and
bamboo, which contain large amounts of the hormone.
Gibberillin is not, however, appropriate for application to all
plants. In most cases, gibberillin increases the thickness and
internodal length of the stalk. Sometimes the terminal nodes are
weak branching is suppressed, and the roots develop poorly. The
number of flowers increase, and they are larger. Germination and
flowering are stimulated, but leaf growth and chlorophyll
production are reduced proportionately.
Gibberillin is extracted from cucumber seeds, fresh cantelope
seeds, dried corn kernels, and from pencil rod, lupine, and
pinto beans. Soak 200 gr of powdered seeds for one week in 110
ml of a mixture of acetone (10 parts), isopropyl alcohol (5
parts) ethanol (2 parts) and water (5 parts). Filter the mush
and rinse it with 20 ml acetone and 20 ml isopropyl alcohol.
Combine the rinse and mother liquor, evaporate the solvent, and
dissolve the residual gum in alkaline water for experimental
(8) Auxin ~ Auxin is the general name of a group of
plant hormones that includes indole-acetic-, -propionic-, and
-butyric-acids. Auxins are active in many platn functions, such
as stem growth, root development, and flowering.
The sexual expression of plants is strongly influenced by the
amount of auxin present during the flowering phase. Other
factors being equal, females develop with higher levels of
Combine auxin (1:5000 water) with vitamin B-1 (1 ppm) to
increase the effect of both nutrients, which are available in
(9) Triacontanol ~ This fatty acid is found in many
plants. It increases growth rates and yields up to 25%, and
increases the protein content, even in darkness, when most
plants are dormant. It seems to enhance the growth of plants
without increasing their consumption of nitrogen.
Triacontanol is non-toxic, and incredibly potent. The applied
dosage is one part in 10 million of water, applied as a foliar
spray. The simplest way to use triacontanol is to plow under a
crop of alfalfa, which contains relatively large amounts of the
substance. Other common sources include cotton, apples, and
sunflower seeds (which contain up to 8% in the fatty acid
Triacontanol is extracted from dried plants by chloroform,
which is then filtered and evaporated. Extract the residue with
acetone, filter and evaporate the acetone, and extract the
residue with petroleum ether to yield crude triacontanol. It can
be purified by reverse chromatography.
Other stimulants of plant growth include: ascorbic acid
(vitamin C); use one to five parts in 10,000 of water. Dilute
camphor also stimulates plant growth.