Reasons to Use Archipelago Bat Guano
to use: over-usage will not cause nitrogen burn
ABG phosphate is sold as a fine powder. Although the fineness of
the material makes it dusty, this is necessary to get a high surface area
on the material so that it releases its nutrients most effectively.
For this reason, countries that
regulate fineness of rock phosphate and similar materials generally
require the material to be about as fine as it is sold here. So when you apply ABG Phosphate directly
to the soil, scratch it into the ground and water it in so that it does
not blow away.
We also have made
test-run pellets that are less dusty.
These will break down in water so that the phosphate is
Let us know if you have
an interest in this and we will produce it if there is enough
ABG Phosphate can also be
used to create a liquid tea for a foliar spray or hydroponic
usage. There is a lot of science involved in this and you should do
some research if you want to get serious about it. But in general,
to create a tea, put about ¼ cup of guano in 2 gallons of water and
simmer for several hours. The guano is basic so citric acid should
be used to try to keep the pH between 6 and 7. Use natural citric
acid if you want the material to remain truly organic.
If you add the acid to the guano before
adding the water, be careful not to seal the mixture in a container
because gasses will be formed by the reaction. A sealed container
could explode during this stage of the process.
Also, be sure to do it in a well-ventilated
area. There are many other safety issues to consider when dealing
Please inform yourself
on these safety issues before you proceed.
Nevertheless, if you do proceed, do not
let the pH vary too much from 6-7, the phosphorous and the calcium will
not remain in solution. Also, much of the guano will not dissolve
during this process and this sludge will still be rich in
nutrients. Place the sludge directly on soil around your
In general, phosphate should be applied directly to the plant root
system. It does not do your plants much good to fertilize the
surrounding soil that is devoid of plant roots. Also,
over-fertilization is a major contributor to phosphate pollution in the
nation’s waterways. To apply to the root system, spread the guano
under the drip-line of a tree or near the base of a smaller plant,
scratch it into the ground, and water it in. When transplanting,
place the guano in the hole that the plant is being placed. This
will aid in root growth.
The guano should be used whenever phosphate is needed. Seasonally,
this is typically when the plant is ready to bloom and during
bloom. Be sure to stop using nitrogen during these times as it can
inhibit fruit and flower development. ABG phosphate has very little
nitrogen and thus it will not cause such problems. Also, because it
has very little nitrogen, it will not burn your plants.
documents and further information can be found at the following web
Why Don’t Schrubs Flower
(or fruit)?, D. Bir,
2002. (Most common reason for lack of flowers in the soils at
issue is lack of phosphate. Care must be given not to apply too
much nitrogen because this can inhibit flowering.)
The Green Lane, Roses and other flowers, 2002.
(In fall, stop nitrogen fertilization but add phosphate to the soil
around your rose bush. They recommend bone meal as a phosphate, but
you might read about that first. Too much nitrogen can promote
Robson, Area Extension Agent, Answering your
frequently asked questions about Darden Flowers, Gardening in Western
Washington, WSU Extension. (Reason that cosmos plants are not
flowering may be too much nitrogen in the fertilizer. Advice
includes using a bloom fertilizer rich in phosphate to stimulate flower
asked perennial questions, University of Nebraska. (Add a
phosphate fertilizer when transplanting to develop root growth.
“Fertilizers high in nitrogen should not be used as nitrogen promotes
excess foliage at the expense of flowers and roots, causes floppy stems,
and can increase disease susceptibility.”)
Roses with care. (Recommends applying phosphate (bone meal)
around the root ball of a transplanted rose.)
Nutrient solutions for greenhouse vegetable
culture, Texas A & M.