Maximum residue limits: compliance issues and problems in Philippine mango exports.
Bajet C. M., Bodnaruk K. P.
Author Affiliation: National Crop Protection Center, Crop Protection Cluster, University of the Philippines Los Baņos, College, Laguna 4031, Philippines.
ACIAR Proceedings Series : 89-97
Abstract : Mango is one of the major export products of the Philippines and ensuring mangoes conform to maximum residue limits (MRLs) in importing countries can be problematic for exporters. Difficulties arise because of limited information on how to prevent MRL violations. This study explored aspects of pesticide use, with the aim of identifying sustainable strategies to aid in achieving MRL compliance and thus to improve export competitiveness and profitability. The decline of the concentration of residues of three of the most commonly used pesticides in Philippine mango production, i.e. cypermethrin, lambda-cyhalothrin and tebuconazole, was studied. Mango crops in Samal, Davao del Norte; Bansalan, Davao del Sur; General Santos City, South Cotobato (Mindanao); Cebu (Visayas); and Cavite and Batangas (Luzon) were sprayed with the pesticides and samples collected and analysed at regular time intervals post-application. The analysis of the harvested samples found that, for the three pesticides, residues above the MRLs of key export destinations, such as Japan, could occur when current label directions were followed. On that basis, it is recommended that the concept of 'export harvest intervals', in which the harvest interval is extended, be considered for mango exports. Several recommendations, such as increasing analytical capacity for pesticide residues, are proposed with respect to mitigating residue violation risks. The communication of market requirements in terms of residues is important through the provision of targeted training to farmers and spraying contractors. Lastly, the implementation of a traceback regime in the mango supply chain, underpinned by the introduction of a farmer's notebook containing a detailed history of pesticide application, is proposed.