Abstract
The role of soil moisture, light and pH on imidacloprid dissipation was investigated. A high performance liquid chromatography (HPLC) based method was developed to quantify imidacloprid present in soil with a recovery of more than 82%. Rate of dissipation of imidacloprid from soil was faster in submerged condition compared to field capacity and air dried condition. Imidacloprid dissipated non-significantly between sterile and non-sterile soils, but at field capacity, the dissipation was faster in non-sterile soil compared to sterile soil after 60 days of incubation. Similarly, under submergence, the dissipation of imidacloprid was 66.2% and 79.8% of the initial in sterile and non-sterile soils, respectively. Imidacloprid was rather stable in acidic and neutral water but was prone to photo-degradation. Therefore, imidacloprid degradation will be faster under direct sunlight and at higher soil moisture.



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Authors sincerely thank Director, ICAR-National Rice Research Institute, Cuttack, India for constant support in formulating the project, funding as well as providing all the facilities required. Authors duly acknowledge Dr. N N Jambhulkar, Scientist, ICAR-NRRI for his guidance in statistical analysis.
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Mahapatra, B., Adak, T., Patil, N.K.B. et al. Effect of Abiotic Factors on Degradation of Imidacloprid. Bull Environ Contam Toxicol 99, 475–480 (2017). https://doi.org/10.1007/s00128-017-2159-6
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DOI: https://doi.org/10.1007/s00128-017-2159-6


