Imazethapyr persistence in sandy loam detected using white mustard bioassay
Abstract
Field experiments were conducted during two years at Srem region to investigate the influence of meteorological conditions, time and rate of application on soil persistence of imazethapyr in sandy loam type of soil. Imazethapyr was applied PRE- and POST-EM and in both cases in three application rates: 80, 120 and 160g a.i./ha. Soil samples were collected from the day of herbicide application in predetermined intervals up to one year after application and residual concentrations were determined with a white mustard root bioassay. Imazetapyr persistence was significantly influenced by meteorological conditions with average half-life being 6days longer in season with lower precipitation level. Time of application induced slower imazethapyr dissipation resulting in higher average t(1/2) (seven and nine days in first and second year of examination, respectively). Application rates had no consistent effect on imazethapyr persistence. Imazethapyr residue level one year after application cause...d no visible injuries on white mustard shoots, while root growth reduction ranged from 4.6 to 27.7%. Obtained residue levels were further compared with known data on crop sensitivity in order to assess possibility of crop injuries one year after imazethapyr application.
Keywords:
Imazethapyr / degradation / soil moisture / time of application / root bioassaySource:
Journal of Environmental Science and Health Part B-Pesticides Food Contaminants and Agricultural Was, 2017, 52, 10, 711-718Publisher:
- Taylor & Francis Inc, Philadelphia
Funding / projects:
- Biološka, hemijska, toksikološka i ekotoksikološka proučavanja herbicida i njihova primena (RS-20041)
DOI: 10.1080/03601234.2017.1356677
ISSN: 0360-1234
PubMed: 28934001
WoS: 000415993300001
Scopus: 2-s2.0-85029685057
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Institution/Community
Poljoprivredni fakultetTY - JOUR AU - Jovanović-Radovanov, Katarina PY - 2017 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/4419 AB - Field experiments were conducted during two years at Srem region to investigate the influence of meteorological conditions, time and rate of application on soil persistence of imazethapyr in sandy loam type of soil. Imazethapyr was applied PRE- and POST-EM and in both cases in three application rates: 80, 120 and 160g a.i./ha. Soil samples were collected from the day of herbicide application in predetermined intervals up to one year after application and residual concentrations were determined with a white mustard root bioassay. Imazetapyr persistence was significantly influenced by meteorological conditions with average half-life being 6days longer in season with lower precipitation level. Time of application induced slower imazethapyr dissipation resulting in higher average t(1/2) (seven and nine days in first and second year of examination, respectively). Application rates had no consistent effect on imazethapyr persistence. Imazethapyr residue level one year after application caused no visible injuries on white mustard shoots, while root growth reduction ranged from 4.6 to 27.7%. Obtained residue levels were further compared with known data on crop sensitivity in order to assess possibility of crop injuries one year after imazethapyr application. PB - Taylor & Francis Inc, Philadelphia T2 - Journal of Environmental Science and Health Part B-Pesticides Food Contaminants and Agricultural Was T1 - Imazethapyr persistence in sandy loam detected using white mustard bioassay EP - 718 IS - 10 SP - 711 VL - 52 DO - 10.1080/03601234.2017.1356677 ER -
@article{ author = "Jovanović-Radovanov, Katarina", year = "2017", abstract = "Field experiments were conducted during two years at Srem region to investigate the influence of meteorological conditions, time and rate of application on soil persistence of imazethapyr in sandy loam type of soil. Imazethapyr was applied PRE- and POST-EM and in both cases in three application rates: 80, 120 and 160g a.i./ha. Soil samples were collected from the day of herbicide application in predetermined intervals up to one year after application and residual concentrations were determined with a white mustard root bioassay. Imazetapyr persistence was significantly influenced by meteorological conditions with average half-life being 6days longer in season with lower precipitation level. Time of application induced slower imazethapyr dissipation resulting in higher average t(1/2) (seven and nine days in first and second year of examination, respectively). Application rates had no consistent effect on imazethapyr persistence. Imazethapyr residue level one year after application caused no visible injuries on white mustard shoots, while root growth reduction ranged from 4.6 to 27.7%. Obtained residue levels were further compared with known data on crop sensitivity in order to assess possibility of crop injuries one year after imazethapyr application.", publisher = "Taylor & Francis Inc, Philadelphia", journal = "Journal of Environmental Science and Health Part B-Pesticides Food Contaminants and Agricultural Was", title = "Imazethapyr persistence in sandy loam detected using white mustard bioassay", pages = "718-711", number = "10", volume = "52", doi = "10.1080/03601234.2017.1356677" }
Jovanović-Radovanov, K.. (2017). Imazethapyr persistence in sandy loam detected using white mustard bioassay. in Journal of Environmental Science and Health Part B-Pesticides Food Contaminants and Agricultural Was Taylor & Francis Inc, Philadelphia., 52(10), 711-718. https://doi.org/10.1080/03601234.2017.1356677
Jovanović-Radovanov K. Imazethapyr persistence in sandy loam detected using white mustard bioassay. in Journal of Environmental Science and Health Part B-Pesticides Food Contaminants and Agricultural Was. 2017;52(10):711-718. doi:10.1080/03601234.2017.1356677 .
Jovanović-Radovanov, Katarina, "Imazethapyr persistence in sandy loam detected using white mustard bioassay" in Journal of Environmental Science and Health Part B-Pesticides Food Contaminants and Agricultural Was, 52, no. 10 (2017):711-718, https://doi.org/10.1080/03601234.2017.1356677 . .