Study Shows Minimal Leaching for ThermoPotash compared to a Loss of 26% of KCl
17 12월 2010 - 5:04AM
Marketwired Canada
Amazon Mining Holding Plc (TSX VENTURE:AMZ) ("Amazon" or the "Company") is
pleased to report the results of the potassium leaching test, which established
that ThermoPotash suffers minimal nutrient loss as a result of leaching, whereas
KCl loses 26% under the same conditions.
Nutrient leaching is a significant factor that decreases the efficiency of
fertilizers for farmers. Potassium is a nutrient that is found in soil solution
in ionic form, possessing high mobility and susceptibility to leaching,
particularly in areas with high rainfall and sandy soils with low cation
exchange capacity (CEC). This is particularly important in the Cerrado region of
Brazil. The highly weathered ancient tropical soils of Cerrado are very well
drained, not retaining water or nutrients, unlike the younger soils in the
world's traditional farmlands located in temperate climates. To compound the
problem, Brazil's Cerrado region receives substantially more rain than other
growing areas.
The experiment was carried-out at the University of Uberlandia under the
direction of Prof. Gaspar Korndorfer in a greenhouse for 18 days, using soil
columns (lysimeters) with two different soil compositions (sandy texture at 15%
clay and a clayey soil at 45% clay) and two sources of potassium (potassium
chloride (KCl) granules and ThermoPotash granules and powder) at a dose
equivalent to 300 kg/ha under irrigation of 300 mm of water.
The results presented in Table 1 show that the amount of potassium leached from
the ThermoPotash was very low compared to that of potassium chloride (KCl) for
both of the soil compositions tested. In each sample, 26% of the potassium
chloride was leached, while only 0.3% of the ThermoPotash was leached. The
superior behavior of ThermoPotash over KCl in the leaching test can be explained
by its low solubility in water, which still effectively delivers nutrients to
plants (see press release August 11, 2010).
Table 1: Amount of potassium in the soil solution (leached) collected in two
soil types (sandy and clay) for granular KCl and powdered and
granulated ThermoPotash applied to the surface at a dose equivalent
to 300 kg/ha K2O, after an irrigation of 300 mm, measured during a
period of 18 days.
----------------------------------------------------------------------------
Soil type Source of K - Doses of 300 kg/ha
-----------------------------------------------------------
KCl ThermoPotash ThermoPotash Control
(granular) (powdered) (granular) (without K)
----------------------------------------------------------------------------
--------------------- K leached, grams per column ---------
Sandy (15% loamy) 2.31 (26.2%) 0.28 (0.3%) 0.26 (0.0%) 0.26
Clay (40% loamy) 2.09 (26.0%) 0.08 (0.3%) 0.07 (0.1%) 0.06
----------------------------------------------------------------------------
Note: Figures in parentheses represent the percentage of K from the fertilizer
applied that was lost through leaching and calculated using the following
equation: % K lost by leaching = ((K leached from the source (g) - K leached
from the control (g)) / total K applied in fertilizer (g)) x 100.
About Amazon
Amazon Mining is a mineral exploration and development company founded by
Brazilians in 2005. The company is focused on the development of the Cerrado
Verde project. Cerrado Verde is a source of a potash rich rock from which Amazon
plans to produce a slow-release, non-chloride, multi-nutrient, fertilizer
product. Amazon Mining is a UK public company with shares listed on the Toronto
Stock Exchange since November 2007.
On behalf of the Board of Directors of Amazon Mining Holding Plc, Jed
Richardson, Vice President of Corporate Development.
Cautionary Language and Forward Looking Statements
THIS PRESS RELEASE CONTAINS CERTAIN "FORWARD LOOKING STATEMENTS", WHICH INCLUDE
BUT IS NOT LIMITED TO, STATEMENTS WITH RESPECT TO THE FUTURE FINANCIAL OR
OPERATING PERFORMANCE OF THE COMPANY, ITS SUBSIDIARIES AND ITS PROJECTS,
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EXPECTED", "ANTICIPATES" OR "DOES NOT ANTICIPATE", OR "BELIEVES", "INTENDS",
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TO BE MATERIALLY DIFFERENT FROM ANY FUTURE RESULTS, PERFORMANCE OR ACHIEVEMENTS
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FORWARD-LOOKING STATEMENTS WILL PROVE TO BE ACCURATE, AS ACTUAL RESULTS AND
FUTURE EVENTS COULD DIFFER MATERIALLY FROM THOSE ANTICIPATED IN SAID STATEMENTS.
ACCORDINGLY, READERS SHOULD NOT PLACE UNDUE RELIANCE ON FORWARD-LOOKING
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Readers are cautioned not to rely solely on the summary of such information
contained in this release and are directed to the complete set of drill results
posted on Amazon's website (www.amazonplc.com) and filed on SEDAR
(www.sedar.com) and any future amendments to such. Readers are also directed to
the cautionary notices and disclaimers contained herein.
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