NI 43-101 Preliminary Economic Assessment - Verde Potash

Verde Potash Plc 11-5
Cerrado Verde Project
NI 43-101 Preliminary Economic Assessment
When comparing the doses of 200 and 400kg/ha K 2 O, only Thermo-K showed an increase in the
nutrient content in the soil, which further demonstrates the high reactivity of the product even
when analyzed in the short term.
Table 11.1.4.3: Exchangeable Ca in the Soil After 60 Days of Incubation with Different
Sources of Potassium in A Clay Soil
Dose K 2 O
K-Source
kg ha -1 KCl Thermo-K Verdete
Average
0 --- --- --- 0,09
200 0,08 ns b A 1,40 * a B 0,10 ns b A 0,52
400 0,09 ns b A 2,20 * a A 0,10 ns b A 0,80
Average 0,08 1,79 0,10
CV% = 6,70
DMS dose = 0,07 ; DMS source = 0,06 ; DMS Dunnet = 0,08
Averages followed by distinct letters, lowercase on the line and uppercase in the column, differ by Tukey test at 0.05 significance; ns not
significant by the Dunnett test at 0.05 significance, * significant by the Dunnett test at 0 05 significance
Table 11.1.4.4: Exchangeable Ca in the Soil After 60 Days of Incubation with Different
Sources of Potassium in a Sandy Soil
Dose K 2 O
K-Source
kg ha -1 KCl Thermo-K Verdete
Average
0 --- --- --- 0,09
200 0,08 ns b A 1,54 * a B 0,14 ns b A 0,58
400 0,12 ns b A 2,26 * a A 0,11 ns b A 0,83
Average 0,10 1,90 0,12
CV% = 8,84
DMS dose = 0,08 ; DMS source = 0,1 ; DMS Dunnet =0,11
Averages followed by distinct letters, lowercase on the line and uppercase in the column, differ by Tukey test at 0.05 significance; ns not
significant by the Dunnett test at 0.05 significance, * significant by the Dunnett test at 0 05 significance;
Table 11.1.4.5: Exchangeable Mg in the Soil After 60 Days of Incubation with Different
Sources of Potassium in a Clay Soil
Dose K 2 O
K-Source
kg ha -1 KCl Thermo-K Verdete
Average
0 --- --- --- 0,04
200 0,04 ns b A 0,43 * a B 0,05 ns b A 0,17
400 0,05 ns b A 0,69 * a A 0,04 ns b A 0,26
Average 0,04 0,56 0,04
CV% = 5,54
DMS dose = 0,016 ; DMS source = 0,019 ; DMS Dunnet = 0,02
Averages followed by distinct letters, lowercase on the line and uppercase in the column, differ by Tukey test at 0.05 significance; ns not
significant by the Dunnett test at 0.05 significance, * significant by the Dunnett test at 0 05 significance;
SRK Consulting (U.S.), Inc. September 16, 2011
Cerrado Verde_NI 43-101 PEA_343500.020_007_KG