sdu faculty of forestry journal special edition 2009 - Orman Fakültesi

SDÜ Faculty of Forestry Journal
organic matter and nutrient contents were low considering that the coarse fraction (up
to 3 cm) was as high as 62 %, and fraction larger than 3 cm in size estimated to be
more than 50 % in some plots.
3.3. Needle samples
Similarly, foliar nutrient levels also showed poor site quality (Table 2). Overall,
needle N concentration was lower than 1 per cent. Usually, less than 1.2 % N indicates
some deficiency and N concentration is usually between 1.4-1.6 % in first quality sites.
There was no significant difference between healthy and unhealthy needles in terms of
nutrient concentrations (Figure 2), however fascicle weight of health needles were
significantly greater (Figure 3).
Table 1. Soil characteristics of the infected stands.
Parameters Mean Std. Error
Sand (%) 50.11 1.958
Silt (%) 27.32 1.297
Clay (%) 22.57 1.570
Coarse faction (%) 34.63 5.664
EC 188.53 8.909
pH 7.72 0.044
Lime (%) 16.08 1.899
Organic matter (%) 3.84 0.116
N (ppm) 1360.33 71.736
P (ppm) 16.38 1.425
K (ppm) 256.17 14.053
Ca (ppm) 8130.92 361.213
Mg (ppm) 248.08 13.118
Na (ppm) 16.47 0.925
Table 2. Foliar characteristics of the infected stands.
Parameters Mean Std. Error
N (%) 0.97 0.024
P (%) 0.13 0.003
K (%) 0.33 0.010
Ca (%) 0.83 0.030
Mg (%) 0.21 0.007
Fe (ppm) 37.24 1.069
Cu (ppm) 3.13 0.197
Mn (ppm) 32.60 3.640
Zn (ppm) 15.00 0.414
B (ppm) 19.07 1.418
Fascicle weight (g) 6.53 0.204
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