title: Effect of moisture, organic matter, microbial population and fortification level on dissipation of pyraclostrobin in soils.
abstract: The dissipation of pyraclostrobin, a strobilurin fungicide, in soil was found to be influenced by soil moisture, organic matter content and microbial population. Among the different moisture regimes, dissipation was faster under submerged condition (T1/2 10 days) followed by field capacity (T1/2 28.7 days) and in dry soil (T1/2 41.8 days). Use of sludge at 5 % level to Inceptisol favoured a faster dissipation of pyraclostrobin, whereas a slower rate of dissipation was observed in partial organic matter removed soil as compared to normal soil. Slower rate of dissipation was also observed in sterile soil (T1/2 47 days) compared to normal soil. Pyraclostrobin dissipated faster in Vertisol (T1/2 21.8 days) than in Inceptisol (T1/2 28.7 days). No significant difference in the dissipation rate was observed at 1 and 10 μg g(-1) fortification levels.
authors.affiliation: Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi, 110012, India. navakishore89@gmail.com
authors.forename: S Navakishore
authors.initials: SN
authors.lastname: Reddy
authors.forename: Suman
authors.initials: S
authors.lastname: Gupta
authors.forename: Vijay T
authors.initials: VT
authors.lastname: Gajbhiye
mesh_terms: D002219:Carbamates / Q000378:metabolism*; D005659:Fungicides, Industrial / Q000378:metabolism*; D006207:Half-Life; D007194:India; D007700:Kinetics; D011720:Pyrazoles / Q000378:metabolism*; D012987:Soil / Q000737:chemistry*; D012989:Soil Pollutants / Q000378:metabolism*; D000073739:Strobilurins
chemical_list: D002219:Carbamates; D005659:Fungicides, Industrial; D011720:Pyrazoles; D012987:Soil; D012989:Soil Pollutants; D000073739:Strobilurins; C513428:pyrachlostrobin