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The Environmental Fate Study hydrolysis half-life of imidacloprid in water of a pH 7 can range from 33–44 days at and 77ºF. The aqueous photolysis half-life of imidacloprid is less than 3 hours.
Environmental Fate Study of Imidacloprid Revealed
Half-lives of Imidacloprid ranged from 40 days with no organic fertilizers used to 124 days when cow manure was added.
The hydrolysis half-life of imidacloprid in water of a pH 7 can range from 33–44 days at and 77ºF. The aqueous photolysis half-life of imidacloprid is less than 3 hours.
The Effect of temperature on decay
Imidacloprid degradation Half-lives decreased from 547 to 153 days and to 85 days at incubation temperatures of 41, 59, and 77 °F,.
How Does The Active Ingredient Behave In The Whole Environment
Volatility (air)
Sorption to soil particles (soil)
Solubility (water)
Effect of temperature on decay
Hydrolysis half-life
Aqueous photolysis half-life
Anaerobic half-life
Aerobic half-life
Soil photolysis half-life
Field dissipation half-life
http://www.cdpr.ca.gov/docs/emon/pubs/fatememo/Imidclprdfate2.pdf
Imidacloprid Technical Fact Sheet
http://npic.orst.edu/factsheets/archive/imidacloprid.html
Environmental fate and exposure; neonicotinoids and fipronil
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4284396/
Evidence for the microbial degradation of imidacloprid in soils of Cameron Highlands
https://www.sciencedirect.com/science/article/pii/S1658077X14000253
