Joint International Conference on Long-term Experiments ...

Seeds were sown on 5th may 2006. Pots were irrigated daily with deionized water
during the experiment, according to 60 % of maximum water capacity of soils. Plants
were harvested 20 th of July and soil samples were taken.
Beside plant biomass, the C, N and S content of plant also were measured by a dry
combustion method. The 0.01 M CaCl2 soluble N and P content of soil (HOUBA et al.,
1994) was determined by a continues flow equipment.
RESULTS AND DISCUSSIONS
We would like to get results with this experiment that how the N and biofertilization
affect dry matter of parsley, and N content of plant. Treatment effects on 0.01 M CaCl2soluble
total N and NO3-N concentration at the end of growing period were also
examined. The experiment was set up on a chernozem soil with good N supply, high
organic carbon content, around neutral pH, which gives good circumstances for
microbes; and on an another one, which have opposite properties, with poor N supply,
low content of organic C, and with very acidic character. The experimental design
opens the door to compare plant parameters on two soils.
As you can see from data of Table 2, in which dry matter weight of parsley was
presented, the N fertilization significantly increased the yield of plant. Although there
was no significant biofertilizer effect, but it can be concluded that bio-treatments
enhanced the dry matter.
Table 2: Dry matter content of parsley on chernozem
Leaf dry matter (g pot -1 )
Phylazonit doses (cm 3 pot -1 N (g pot
)
-1 )
70 35 0
Mean LSD5% (N)
0.2 17.7 17.5 17.5 17.6
0,1 15.6 15.1 15.1 15.3
0,05 14.6 14.4 14.3 14.4 1.4
0 15.6 15.6 14.7 15.3
Mean 15.9 15.7 15.4 15.7
LSD5% (phylazonit): 1.2
According to data presented in Table 3, the dry matter of plants increased with
increasing N doses comparing to control on sandy soil. However, there were no
significant differences among N treatments.
No correlation has been found between biofertilizer and dry matter weight on sandy
soil. It is also true that biofertilization increased dry matter of parsley at high N doses,
while at lower ones or at control the application of biofertilization decreased.
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