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  • Title: Persistence behaviour of thiamethoxam and lambda cyhalothrin in transplanted paddy.
    Author: Barik SR, Ganguly P, Kunda SK, Kole RK, Bhattacharyya A.
    Journal: Bull Environ Contam Toxicol; 2010 Oct; 85(4):419-22. PubMed ID: 20703448.
    Abstract:
    A field study was conducted in Pre-Kharif season 2007 on paddy to determine the persistence of thiamethoxam (12.6%) and lambda cyhalothrin (9.4%) [in a 'Readymix' formulation Alika 247 ZC], following the application of 33 g. a.i. ha⁻¹ (T₁) and 66 g. a.i. ha⁻¹ (T₂). Spraying of insecticide was done during milking stage of the crop (63 days after transplantation). Thiamethoxam and lambda cyhalothrin residues were estimated by HPLC and GLC respectively. The half-life values were 5.2-5.8 and 4.8 days for thiamethoxam and lambda cyhalothrin respectively. No residue was detected in the harvested paddy, straw, grain, and soil samples.
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