|
|
vol. 11, nr. 1 (2008)
|
Greenhouse gas dynamics in soils contaminated with fonofos pesticide
|
|
|
Zofia Stępniewska, Agnieszka Wolińska, Anna Szafranek, Renata Lipińska
|
|
| (get PDF )
|
|
|
Department of Biochemistry and Environmental Chemistry, John Paul II Catholic University of Lublin, Al. Kraśnicka 102, 20-718 Lublin |
|
|
vol. 11 (2008), nr. 1,
pp. 253-262
|
|
|
abstract:
The aim of the study was to provide information about the influence of the fonofos pesticide on the process of greenhouse gas formation in two selected soils. In the model experiment soil samples (Eutric Histosol, Mollic Gleysol) were amended with pesticide as follows: with a dose of 1µg of fonofos/1g of soil and with one ten times higher (10 µg of fonofos/1g of soil) in relation to the control samples, prepared without fonofos addition. The laboratory experiment lasted 42 days. The gas samples (3 cm3) taken from head space during incubation of soils (6 times after every 7 days of incuba-tion, till the 42nd day) were analysed by gas chromatography (Varian CP-3800 equipped with TCD, FID and ECD detectors) for CH4, N2O, CO2 contents. It was shown that respiration activity was strongly reduced up to 35th day of incubation in each of the soil investigated. The value of P was lower than 0.05, which testified to statistically significant differences between average greenhouse gases emission and the fonofos dose at 95% confidence level. Generally, respiration activity returned to the optimum value after 6 weeks from introducing the pesticide into the soil.
|
|
keywords:
fonofos, soil, CO2 , N2O, CH4
|
|
original in:
English
|
|
|
|
|
|
