Joint International Conference on Long-term Experiments ...

with microelements Sr, Co and Ni. According to our analysis, the used powdered
limestone had 0.3% Mg, 70 mg/kg Mn, 158 mg/kg Sr, 1.3 mg/kg Ni and 0.2 mg/kg Co.
The used dolomit powder contained around 24% Ca, 12% Mg, 6-7 mg/kg Mn, 75 mg/kg
Sr and 0.4-0.5 mg/kg Ni. The content of Co was under detection limit of 0.08 mg/kg.
The Fe made out 730 mg/kg in limestone and 150 mg/kg in dolomite, while Al was 410
mg/kg in limestone and 140 mg/kg in dolomite powder. In spite of the Fe and Al input,
the NH4-acetate+EDTA soluble Fe and Al content in the ploughed layer diminished. So,
the solubility of these elements lessened, assessed with this method. The Sr is usually
moving in line with Ca both in rocks and soils which can be followed here. The same
time, the very low pool of Mn, Sr, Co and Ni in the extremely acid N3 soil might be a
consequence of leaching of these elements.
Table 4: Effect of fertilization and liming on the yield of triticale in the 41 st – 44 th
years of the experiment. (The 12 th – 16 th years of the triticale monoculture)
Treatments 2003 2004 2005 2006
code Grain Straw Grain Straw Grain Straw Grain Straw
Control 1.2 1.8 1.8 1.8 0.3 2.3 0.6 0.7
N1 1.2 1.8 3.6 3.9 0.3 2.7 0.4 0.6
N2 1.1 1.6 3.0 3.5 0.4 2.9 0.3 0.3
N3 0.6 1.0 1.1 1.5 0.1 1.2 0.1 0.2
N2P1 1.1 1.7 4.0 4.7 0.5 4.3 0.3 0.4
N2P2 1.8 2.5 4.6 5.3 0.4 3.2 0.3 0.2
N2P3 1.7 2.1 5.0 5.3 0.3 3.2 0.3 0.4
N2K1 1.1 1.5 2.2 3.0 0.2 2.1 0.2 0.2
N2K2 1.7 2.9 3.2 4.1 0.3 3.0 0.3 0.4
N2K3 1.0 1.6 2.3 2.6 0.3 3.0 0.4 0.3
N2P2K2 1.7 2.4 4.2 4.5 0.5 4.8 0.4 0.6
N2P2K2Ca3 1.8 2.7 5.6 5.8 0.9 9.1 2.1 1.8
N2P2K2Mg2 2.2 2.7 5.7 6.1 0.8 7.0 1.3 2.1
N2P2K2Ca2Mg2 2.1 3.3 6.7 6.7 0.9 8.1 1.9 2.5
LSD5% 0.6 0.8 1.5 1.4 0.2 1.8 0.7 0.6
Mean 1.5 2.1 3.8 4.2 0.4 4.1 0.6 0.8
The yield of triticale was depressed on the acidified soil. Fertilizer responses were time
dependent (Table 4). In the 1 st decade of the experiment N alone increased the potato
and rye yields. In the 2 nd decade, the yield on N-plots declined near to control. In the
studied last few years, the yields on N-plots were negligible, the soil lost its fertility,
became leached and very acid. To maintain or increase the yields of crops NPKCaMg
fertilization was needed. Fertile plots have a pH (KCl) 5.5-6.0, 120-150 mg/kg
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