Authors : Sherif H. Abd-Alrahman, Manal E.A. Elhalwagy, Mounir M. Salem-Bekhit and Wael M. Abdel-Mageed
Abstract: The degradation kinetics and residual levels of abamectin (Abalone 1.8% EC) were estimated in potatoes under field conditions by employing a validated Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS) Method followed by High Performance Liquid Chromatography with Diode Array Detector (HPLC-DAD) for quantification. At fortification levels of 0.05, 0.1, 0.25 and 0.5 mg kg-1, it was shown recovery was 89%, with Coefficient Variation (CV%) was <9% in potato tubers. The LOQ for potatoes was found to be 0.03 μg kg-1. After one single application of abamectin the average residues levelin potatoes was observed to be 0.65 mg kg-1 after 1 day of application. The terminal residues of abamectin were below the maximum residue limit (MRL 0.01 mg kg-1) after 10 days at a single dosage. Half-life of abamectin was observed to be 3.5 days at the recommended dosage which considered to be safe for human beings. These data could provide guidance for the proper and safe use of this pesticide on vegetable-field ecosystems.
Sherif H. Abd-Alrahman, Manal E.A. Elhalwagy, Mounir M. Salem-Bekhit and Wael M. Abdel-Mageed, 2014. Evaluation of Degradation Kinetics for Abamectin in Potatoes. Journal of Animal and Veterinary Advances, 13: 608-611.