TEST RESULTS OF SILVAMIX®MG , SILVAMIX®W AND SILVAMIX®R FERTILIZING EFFECTS ON SPRUCE AND BEECH SEEDLINGS IN FORESTRY
After carrying out tests on the fertilizing of spruce seedlings in the Sudeten (Szklarska Poręba) and in a forest nursery with various forms of SILVAMIX® the Department of Soil Science and Fertilization of the Forestry Research Institute in Warsaw (Poland) hereby submits the following test results.
Following the fertilizing of 3-year spruce seedlings in Szklarska Poręba:
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with SILVAMIX® MG (9,13,6,17) - 5 tablets per seedling, growth in height increased by an average of 33% (27-40%)
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with SILVAMIX® MG (9,13,6,17) - 50 g of powder around the seedling, growth in height increased by an average of 36% (30-44%)
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with SILVAMIX? W (10,13,16,18) - 5 tablets per seedling, growth in height increased by an average of 38% (31-46%)
The seedlings took up nutrients (according to the results of the analysis of needles from the last year) at a mass percentage of dry mass:
% N | % P | % K | % Ca | % Mg | |
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Control | 1.35 | 0.16 | 0.39 | 0.30 | 0.09 |
SILVAMIX® MG, tablets | 1.67 | 0.19 | 0.45 | 0.44 | 0.11 |
SILVAMIX® MG, powder | 1.81 | 0.19 | 0.47 | 0.42 | 0.11 |
SILVAMIX® W, tablets | 1.70 | 0.18 | 0.41 | 0.39 | 0.10 |
The results obtained after fertilizing 1-year beech and spruce in the nursery:
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with SILVAMIX® R (10,6,16,7) at a quantity of 5 kg of powder/ar, displays an average growth in height of beech of 35% and of dry seedling mass of 56%
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with SILVAMIX? R (10,6,16,7) at a quantity of 5 kg of powder/ar, displays an average growth in height of spruce of 32% and of dry seedling mass of 52%
The results of the analysis of assimilation organs are as follows:
% N | % P | % K | % Ca | % Mg | |
---|---|---|---|---|---|
Beech Control | 2.02 | 0.14 | 0.54 | 0.64 | 0.13 |
SILVAMIX® R | 2.16 | 0.16 | 0.65 | 0.68 | 0.15 |
Spruce Control | 1.62 | 0.22 | 0.43 | 0.38 | 0.10 |
SILVAMIX® R | 1.98 | 0.28 | 0.72 | 0.48 | 0.13 |
Sękocin, 24.2.1997
For the attention of:
Director General Lasów Państwowych (State Forests)
Department of Forest Management
09-922 Warsaw, ul. Wawelska 52/54
Poland