Degradation of nicosulfuron in soil
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Nicosulfuron (2-[[[[(4.6-dimethoxy-2-pyrimidinyl]amino] carbonylJamino]|sulfony!]-N,Ndimethyl-3-pyridinecarboxamide) is a sulfonylurea herbicide (SU) used for selective postemergence control of annual and perennial grasses in corn. In contrast to traditional herbicides used in corn that are applied at rates >1 kg ha’', nicosulfuron is typically applied at rates <100 g ha’', Because of the low application rates, it has been thought to have a lower potential for contamination of surface and ground waters than other traditional corn herbicides [1]. Degradation of the herbicide nicosulfuron in three samples of soil was investigated under laboratory conditions. Degradation of nicosulfuron in soils was pH-dependent; calculated half-life (t;2) values ranged from 0.37 to 9.11 days. Nicosulfuron was more persistent in neutral or weakly basic soil than in acidic soil. The degradation pathways included the cleavage of the sulfonylurea bridge to form the pyridine sulfonamide and pyrimidine amine, ...and hydrosylation on the pyrimidine ring were the main metabolic pathways.
Ključne reči:
nicosulfuron / degradation / soils / herbicidesIzvor:
Proceedings, 16th International Symposium on Analytical and Environmental Problems, 28 September 2009, Szeged, 2009, 219-222Izdavač:
- Szeged : University of Szeged, Department of Inorganic and Analytical Chemistry
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FiVeRTY - CONF AU - Ostojić, Nada AU - Zeremski-Škorić, Tijana AU - Sekulić, Petar AU - Đurić, Simonida AU - Jakšić, Snežana PY - 2009 UR - http://fiver.ifvcns.rs/handle/123456789/3297 AB - Nicosulfuron (2-[[[[(4.6-dimethoxy-2-pyrimidinyl]amino] carbonylJamino]|sulfony!]-N,Ndimethyl-3-pyridinecarboxamide) is a sulfonylurea herbicide (SU) used for selective postemergence control of annual and perennial grasses in corn. In contrast to traditional herbicides used in corn that are applied at rates >1 kg ha’', nicosulfuron is typically applied at rates <100 g ha’', Because of the low application rates, it has been thought to have a lower potential for contamination of surface and ground waters than other traditional corn herbicides [1]. Degradation of the herbicide nicosulfuron in three samples of soil was investigated under laboratory conditions. Degradation of nicosulfuron in soils was pH-dependent; calculated half-life (t;2) values ranged from 0.37 to 9.11 days. Nicosulfuron was more persistent in neutral or weakly basic soil than in acidic soil. The degradation pathways included the cleavage of the sulfonylurea bridge to form the pyridine sulfonamide and pyrimidine amine, and hydrosylation on the pyrimidine ring were the main metabolic pathways. PB - Szeged : University of Szeged, Department of Inorganic and Analytical Chemistry C3 - Proceedings, 16th International Symposium on Analytical and Environmental Problems, 28 September 2009, Szeged T1 - Degradation of nicosulfuron in soil EP - 222 SP - 219 UR - https://hdl.handle.net/21.15107/rcub_fiver_3297 ER -
@conference{ author = "Ostojić, Nada and Zeremski-Škorić, Tijana and Sekulić, Petar and Đurić, Simonida and Jakšić, Snežana", year = "2009", abstract = "Nicosulfuron (2-[[[[(4.6-dimethoxy-2-pyrimidinyl]amino] carbonylJamino]|sulfony!]-N,Ndimethyl-3-pyridinecarboxamide) is a sulfonylurea herbicide (SU) used for selective postemergence control of annual and perennial grasses in corn. In contrast to traditional herbicides used in corn that are applied at rates >1 kg ha’', nicosulfuron is typically applied at rates <100 g ha’', Because of the low application rates, it has been thought to have a lower potential for contamination of surface and ground waters than other traditional corn herbicides [1]. Degradation of the herbicide nicosulfuron in three samples of soil was investigated under laboratory conditions. Degradation of nicosulfuron in soils was pH-dependent; calculated half-life (t;2) values ranged from 0.37 to 9.11 days. Nicosulfuron was more persistent in neutral or weakly basic soil than in acidic soil. The degradation pathways included the cleavage of the sulfonylurea bridge to form the pyridine sulfonamide and pyrimidine amine, and hydrosylation on the pyrimidine ring were the main metabolic pathways.", publisher = "Szeged : University of Szeged, Department of Inorganic and Analytical Chemistry", journal = "Proceedings, 16th International Symposium on Analytical and Environmental Problems, 28 September 2009, Szeged", title = "Degradation of nicosulfuron in soil", pages = "222-219", url = "https://hdl.handle.net/21.15107/rcub_fiver_3297" }
Ostojić, N., Zeremski-Škorić, T., Sekulić, P., Đurić, S.,& Jakšić, S.. (2009). Degradation of nicosulfuron in soil. in Proceedings, 16th International Symposium on Analytical and Environmental Problems, 28 September 2009, Szeged Szeged : University of Szeged, Department of Inorganic and Analytical Chemistry., 219-222. https://hdl.handle.net/21.15107/rcub_fiver_3297
Ostojić N, Zeremski-Škorić T, Sekulić P, Đurić S, Jakšić S. Degradation of nicosulfuron in soil. in Proceedings, 16th International Symposium on Analytical and Environmental Problems, 28 September 2009, Szeged. 2009;:219-222. https://hdl.handle.net/21.15107/rcub_fiver_3297 .
Ostojić, Nada, Zeremski-Škorić, Tijana, Sekulić, Petar, Đurić, Simonida, Jakšić, Snežana, "Degradation of nicosulfuron in soil" in Proceedings, 16th International Symposium on Analytical and Environmental Problems, 28 September 2009, Szeged (2009):219-222, https://hdl.handle.net/21.15107/rcub_fiver_3297 .