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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:

  1. with SILVAMIX® MG (9,13,6,17) - 5 tablets per seedling, growth in height increased by an average of 33% (27-40%)

  2. 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%)

  3. 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
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:

  • 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%

  • 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