The effect of nicosulfuron on some physiological groups of microorganisms | Uticaj nikosulfurona na neke fiziološke grupe mikroorganizama u zemljištu
2011
Radivojević, Lj., Institut za pesticide i zaštitu životne sredine, Beograd (Serbia) | Šantrić, Lj., Institut za pesticide i zaštitu životne sredine, Beograd (Serbia) | Gajić-Umiljendić, J., Institut za pesticide i zaštitu životne sredine, Beograd (Serbia) | Jovanović-Radovanov, K., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Đurović, R., Institut za pesticide i zaštitu životne sredine, Beograd (Serbia) | Marisavljević, D., Institut za zaštitu bilja i životnu sredinu, Beograd (Serbia)
The effect of nicosulfuron on abundance of amino-autotrophs, amino-heterotrophs, Azotobacter sp., phospho-mobilizers and phospho-mineralizers was examined. A trial was set up in laboratory conditions on chernozem soil type. Nicosulfuron was applied in concentrations 0.3, 1.5 and 3 mg/kg soil. Sampling for analysis was done 1, 7, 14, 21, 30 and 60 days after atrazine application. The results showed that the effect of nicosulfuron depended on rates of application, duration of activity and group of microorganisms. Nicosulfuron had an inhibiting effect on Azotobacter sp., amino-heterotrophs, and phospho-mobilizers. Nicosulfuron inhibited amino-autotrophs initially, and stimulated them after the population recovered, while nicosulfuron had stimulating effect on phospho-mineralizers. However, the changes detected were found to be transient, and therefore there is no real risk of the compound disrupting the balance of biochemical processes in chernozem soil.
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