Rimsulfuron in Soil: Effects on Microbiological Properties under Varying Soil Conditions
Rimsulfuron u zemljištu: uticaj na mikrobiološke parametre u različitim tipovima zemljišta
Author
Radivojevic, Ljiljana
Santric, Ljiljana
Jelena, Gajic Umiljendic
Keywords
RimsulfuronClay soil
Sandy soil
Dehydrogenase activity
Microbial biomass carbon
Fungi
Bacteria
glinovito zemljište
peskovito zemljište
dehidrogenaza
mikrobiološka biomasa ugljenika
gljive
bakterije
Metadata
Show full item recordAbstract
The effects of rimsulfuron a sulfonylurea herbicide on the growth and activity of soil
microorganisms under laboratory conditions was investigated in two soils.
The application rates were: 0.2, 2.0 and 20.0 mg a.i kg-1 soil. The lowest concentration
tested was the label rate (0.2 mg a.i kg-1), and the other two were ten and hundred times
higher. No adverse effects on microbiological processes were observed for the label rate.
Decrease in microbial biomass carbon, dehydrogenase activity, fungi and bacteria in comparison
with untreated control, were found at higher rates. The magnitude of these effects
were generally slight and transitory. Na dva tipa zemljišta, u laboratorijskim uslovima, ispitivan je uticaj herbicida rimsulfurona
iz grupe sulfonilurea na brojnost i aktivnost zemljišnih mikroorganizama.
Rimsulfuron je primenjen u koncentracijama 0,2, 2,0 i 20,0 mg a.s. na kilogram zemljišta.
Najmanja ispitivana koncentracija (0,2 mg) odgovarala je količini koja se preporučuje za primenu,
a druge dve su deset i sto puta veće od preporučene.
Kada je primenjen u preporučenoj količini, rimsulfuron nije imao uticaja na ispitivane
mikrobiološke parametre. Smanjenje mikrobiološke biomase ugljenika, dehidrogenazne
aktivnosti, brojnosti gljiva i bakterija utvrđene su kod većih koncentracija rimsulfurona. Intenzitet
ovih promena je, uglavnom, bio slab i prolaznog karaktera.