Dissipation of nicosulfuron and oxasulfuron in soil under field condition
Autori
Grahovac, NadaSuturović, Z
Kondić-Špika, Ankica
Sekulić, P.
Lazić, S.
Šunjka, D.
Jakšić, Snežana
Konferencijski prilog (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Sulfonylureas represent a major advancement in global crop protection technology
and they have revolutionized weed control by introducing a unique mode of action.
These herbicides have low toxicity to mammals while they are highly toxic to plants.
The fate of sulfonylurea herbicides is directly related to their chemical structure and
mainly to the ionisation of the sulfonylurea bridge. The dissipation behavior of
nicosulfuron and oxasulfuron in soil were investigated. Soil was cored on
experimental site Rimski Sanéevi in Serbia four times (0-30 days after the spray).
The residue levels and dissipation rates of nicosulfuron and oxasulfuron in soil were
determined by liquid chromatography with diode array detection. The pesticide
formulations were applied in two different rates for nicosulfuron (50 g ai ha-1 and
100 g ai ha Nicogan 40SC) and oxasulfuron (80 g ai ha’' and 160 g ai ha’' Dynox).
The fortified recoveries were in the following range for nicosulfuron from 85.90% to
...
98.71% with relative standard deviations (RSDs) of 0.16—4.80% and for oxasulfuron
from 88.09% to 99.01% with relative standard deviations (RSDs) of 1.6-5.66%. The
limit of detections (LODs) for nicosulfuron and oxasulfuron in soil were 0.002 mg/kg
and 0.003 mg/kg, respectively. The dissipation of nicosulfuron and oxasulfuron
residues over the time in soil was described by the Mittag-Leffler function a*Ea,B (-
bt). Coefficients a, b, a, 8 were obtained from the experimental data, by using fitting
procedure. We got a=0.8, B=3.71, a=159.11, b=12.79 for nicosulfuron and a=0.8,
B=4.11, a=82.53, b=7.0 for oxasulfuron. The field dissipation half-life time for
nicosulfuron at the topsoil (0-30cm soil depth) was 5.2 days while for oxasulfuron
was 9.67days after application. These results could be utilized for the environmental
risks assessment and minimizing risk for contamination of natural water resources
and damage to following crops.
Ključne reči:
Sulfonylurea / HPLC-DAD / SoilIzvor:
8th International Symposium of Pesticides in Food and the Environment in Mediterranean Countries, Cappadocia (Urgup)/Nevsehir, Turkey, 2013, 105-105Finansiranje / projekti:
- Stanje, tendencije i mogućnosti povećanja plodnosti poljoprivrednog zemljišta u Vojvodini (RS-MESTD-Technological Development (TD or TR)-31072)
Kolekcije
Institucija/grupa
FiVeRTY - CONF AU - Grahovac, Nada AU - Suturović, Z AU - Kondić-Špika, Ankica AU - Sekulić, P. AU - Lazić, S. AU - Šunjka, D. AU - Jakšić, Snežana PY - 2013 UR - http://fiver.ifvcns.rs/handle/123456789/3731 AB - Sulfonylureas represent a major advancement in global crop protection technology and they have revolutionized weed control by introducing a unique mode of action. These herbicides have low toxicity to mammals while they are highly toxic to plants. The fate of sulfonylurea herbicides is directly related to their chemical structure and mainly to the ionisation of the sulfonylurea bridge. The dissipation behavior of nicosulfuron and oxasulfuron in soil were investigated. Soil was cored on experimental site Rimski Sanéevi in Serbia four times (0-30 days after the spray). The residue levels and dissipation rates of nicosulfuron and oxasulfuron in soil were determined by liquid chromatography with diode array detection. The pesticide formulations were applied in two different rates for nicosulfuron (50 g ai ha-1 and 100 g ai ha Nicogan 40SC) and oxasulfuron (80 g ai ha’' and 160 g ai ha’' Dynox). The fortified recoveries were in the following range for nicosulfuron from 85.90% to 98.71% with relative standard deviations (RSDs) of 0.16—4.80% and for oxasulfuron from 88.09% to 99.01% with relative standard deviations (RSDs) of 1.6-5.66%. The limit of detections (LODs) for nicosulfuron and oxasulfuron in soil were 0.002 mg/kg and 0.003 mg/kg, respectively. The dissipation of nicosulfuron and oxasulfuron residues over the time in soil was described by the Mittag-Leffler function a*Ea,B (- bt). Coefficients a, b, a, 8 were obtained from the experimental data, by using fitting procedure. We got a=0.8, B=3.71, a=159.11, b=12.79 for nicosulfuron and a=0.8, B=4.11, a=82.53, b=7.0 for oxasulfuron. The field dissipation half-life time for nicosulfuron at the topsoil (0-30cm soil depth) was 5.2 days while for oxasulfuron was 9.67days after application. These results could be utilized for the environmental risks assessment and minimizing risk for contamination of natural water resources and damage to following crops. C3 - 8th International Symposium of Pesticides in Food and the Environment in Mediterranean Countries, Cappadocia (Urgup)/Nevsehir, Turkey T1 - Dissipation of nicosulfuron and oxasulfuron in soil under field condition EP - 105 SP - 105 UR - https://hdl.handle.net/21.15107/rcub_fiver_3731 ER -
@conference{ author = "Grahovac, Nada and Suturović, Z and Kondić-Špika, Ankica and Sekulić, P. and Lazić, S. and Šunjka, D. and Jakšić, Snežana", year = "2013", abstract = "Sulfonylureas represent a major advancement in global crop protection technology and they have revolutionized weed control by introducing a unique mode of action. These herbicides have low toxicity to mammals while they are highly toxic to plants. The fate of sulfonylurea herbicides is directly related to their chemical structure and mainly to the ionisation of the sulfonylurea bridge. The dissipation behavior of nicosulfuron and oxasulfuron in soil were investigated. Soil was cored on experimental site Rimski Sanéevi in Serbia four times (0-30 days after the spray). The residue levels and dissipation rates of nicosulfuron and oxasulfuron in soil were determined by liquid chromatography with diode array detection. The pesticide formulations were applied in two different rates for nicosulfuron (50 g ai ha-1 and 100 g ai ha Nicogan 40SC) and oxasulfuron (80 g ai ha’' and 160 g ai ha’' Dynox). The fortified recoveries were in the following range for nicosulfuron from 85.90% to 98.71% with relative standard deviations (RSDs) of 0.16—4.80% and for oxasulfuron from 88.09% to 99.01% with relative standard deviations (RSDs) of 1.6-5.66%. The limit of detections (LODs) for nicosulfuron and oxasulfuron in soil were 0.002 mg/kg and 0.003 mg/kg, respectively. The dissipation of nicosulfuron and oxasulfuron residues over the time in soil was described by the Mittag-Leffler function a*Ea,B (- bt). Coefficients a, b, a, 8 were obtained from the experimental data, by using fitting procedure. We got a=0.8, B=3.71, a=159.11, b=12.79 for nicosulfuron and a=0.8, B=4.11, a=82.53, b=7.0 for oxasulfuron. The field dissipation half-life time for nicosulfuron at the topsoil (0-30cm soil depth) was 5.2 days while for oxasulfuron was 9.67days after application. These results could be utilized for the environmental risks assessment and minimizing risk for contamination of natural water resources and damage to following crops.", journal = "8th International Symposium of Pesticides in Food and the Environment in Mediterranean Countries, Cappadocia (Urgup)/Nevsehir, Turkey", title = "Dissipation of nicosulfuron and oxasulfuron in soil under field condition", pages = "105-105", url = "https://hdl.handle.net/21.15107/rcub_fiver_3731" }
Grahovac, N., Suturović, Z., Kondić-Špika, A., Sekulić, P., Lazić, S., Šunjka, D.,& Jakšić, S.. (2013). Dissipation of nicosulfuron and oxasulfuron in soil under field condition. in 8th International Symposium of Pesticides in Food and the Environment in Mediterranean Countries, Cappadocia (Urgup)/Nevsehir, Turkey, 105-105. https://hdl.handle.net/21.15107/rcub_fiver_3731
Grahovac N, Suturović Z, Kondić-Špika A, Sekulić P, Lazić S, Šunjka D, Jakšić S. Dissipation of nicosulfuron and oxasulfuron in soil under field condition. in 8th International Symposium of Pesticides in Food and the Environment in Mediterranean Countries, Cappadocia (Urgup)/Nevsehir, Turkey. 2013;:105-105. https://hdl.handle.net/21.15107/rcub_fiver_3731 .
Grahovac, Nada, Suturović, Z, Kondić-Špika, Ankica, Sekulić, P., Lazić, S., Šunjka, D., Jakšić, Snežana, "Dissipation of nicosulfuron and oxasulfuron in soil under field condition" in 8th International Symposium of Pesticides in Food and the Environment in Mediterranean Countries, Cappadocia (Urgup)/Nevsehir, Turkey (2013):105-105, https://hdl.handle.net/21.15107/rcub_fiver_3731 .