Residual dynamics of Sportak in storage mango.
Lu ZhiXin, Huang HuiYe, Lin MingZhen
Author Affiliation: Applied Pesticide Research Center, Guangxi Academy of Agriculture Sciences, Guangxi Nanning 530007, China.
Southwest China Journal of Agricultural Sciences 18 : 80-83
Abstract : Residues of Sportak [prochloraz] in stored mango fruits were analysed by GC [gas chromatography] with ECDNi63. The average recovery of Sportak was 90.6-95.3%. The level of degradation reached 4.1126-4.8267 mg/kg in Guangxi province and 3.8218-4.4563 mg/kg in Guangdong province, China. The half lives were 13.0-13.5 days in Guangxi and 14 days in Guangdong, respectively. Sportak degraded by more than 92.68% at 30 days after application. The last residue in fruit flesh was less than 0.0563 mg/kg in Guangxi and less than 0.0623 mg/kg in Guangdong; the corresponding residue levels in whole fruits (flesh and skin) were 0.0699-0.6414 mg/kg in Guangxi and 0.5847-0.5858 mg/kg in Guangdong. Based on the minimum residue limit (2 mg/kg) established by FAO/WHO, the safety period for Sportak was 10 days after spraying.