Vol. 12, Issue 10 (2023)

Author(s):
Pooja, Sushil Ahlawat and Reena Chauhan

Abstract:
This investigation was carried out to study persistence of spiromesifen (Oberon 22.9% SC) in the soil and capsicum after being applied twice at the 50% fruiting stage with interval of 10 days. Gas chromatography-tandem mass spectrometry was used to examine spiromesifen traces in samples extracted using the liquid-liquid partitioning technique. This study presents a novel, precise, and cost-effective gas chromatography method for quantifying spiromesifen levels in capsicum plants and soil samples. The initial deposits of spiromesifen were measured to be 0.86 mg/kg, and their dissipation followed first-order kinetics with a half-life of 1.96 days. Following a treatment period of 10 days, the residual levels were found to have decreased to a point below the detection limit of 0.05 mg/kg. It is advisable to observe a waiting time of 24 hours for the safe use of capsicum.