Microbiological activity of soil treated with nicosulfuron
2004
Santric, Lj.(Institut za istrazivanja u poljoprivredi Srbija, Beograd - Zemun (Serbia and Montenegro). Centar za pesticide i zastitu zivotne sredine) | Radivojevic, Lj. | Stankovic-Kalezic, R. | Djordjevic, S.
Effects of the herbicide nicosulfuron on the activity of soil microorganisms were investigated. Trials were set up on a chernozem soil. Nicosulfuron (preparation Motivell) was applied at 0.5 l/ha, 1 l/ha and 2 l/ha. The abundance of total microflora, actinomycetes, fungi, aminoheterotrophs, aerobic nitrogen fixing bacteria (Azotobacter) and dehydrogenase activity in soil were recorded. Soil samples were collected 3, 7, 14, 30 and 45 days after nicosulfuron treatment for microbiological analyses. The results showed that the intensity of nicosulfuron effect on soil microorganisms depended on treatment rate, length of activity and group of microorganisms. Nicosulfuron had stimulative effect on the number of fungi and actinomycetes. Herbicide treatment reduced the abundance of total microorganisms, aminoheterotrophs and aerobic nitrogen fixing bacteria. Dehydrogenase activity in the examined samples decreased, compared to control.
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