VOLUM OMAGIAL - Facultatea de Ştiinţe ale Naturii şi Ştiinţe Agricole

Data on the dinamics of some microbial groups... / Ovidius University Annals, Biology-Ecology Series 14: 181-184 (2010)
2 V2 2.95 0.14
3 V3 3.21 0.15
4 V4 3.07 0.15
5 V5 2.83 0.13
6 V6 3.09 0.15
7 M1 3.16 0.15
Table 2. Agrochemical analysis conducted after 6
months (May 2010)
Nr.
Crt.
Variant % mg/Kg
Humus Indice N2
1 V1 3.07 0.15
2 V2 3.09 0.15
3 V3 3.36 0.17
4 V4 3.12 0.15
5 V5 3.07 0.15
6 V6 3.12 0.15
7 M1 3.24 0.16
Further information relative determination of
humus were not noted substantial increases for the
period under review (Table 1, Table 2), which is
understandable due to the short observation time
insufficient to identify significant changes in the
humus content.
4. Conclusions
Dynamics of the total number of heterotrophic
bacteria presented significant changes after
application of amendments. The most significant
increase occurred in the variant enriched with
manure, trend was also observed in the case of
variant VI in which soil was treated with Biovin.
The total number of nitrogen fixing bacteria
showed a spectacular increase after six months of
amendments application, effect that can be attributed
only in part as a result of fertilizer.
Results of soil chemical and microbiological
analysis reveal a low contribution of microorganisms
to the improvement of the soil fertility and microbial
biodiversity. To improve the biological quality of soil
it is necessary to increase the biomass of
microorganisms in the soil by adding bacteria, and
184
their activities by introducing large amounts of
organic matter.
5. References
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Baltimore, USA, 4087: 1075-1079
[3] CLARK F, 1965 - Agar plate method for total
microbial count. Method for Soil Analysis, vol.2:
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Madison, WL.
[4] FLORENZANO G, 1983 - Fondamenti di
microbiologia del rerreno, Reda Ed, Firenze, 630:
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[5] PAPACOSTEA P, 1976 - Biologia solului, Ed.
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[7] TSUNEO WATANABE, 2001 - Pictorial Atlas of
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[8] DUMITRU M, TOTI M, VOICULESCU A-R,
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