Pesticide residue analysis of “Pinakbet type” vegetables in the municipality of Lal-Lo, Cagayan

Paper Details

Research Paper 01/02/2022
Views (784) Download (110)

Pesticide residue analysis of “Pinakbet type” vegetables in the municipality of Lal-Lo, Cagayan

Roldan D. Sawadan
J. Bio. Env. Sci.20( 2), 12-23, February 2022.
Certificate: JBES 2022 [Generate Certificate]


The study was conducted among the pre-identified major vegetable producing barangays in the Municipality of Lal-lo. It aims to determine the management practices of vegetable producers, the most common pesticides used, the level of pesticide residue, conformity of pesticide residue to ASEAN’s MRL, conformity of farmers practices to the pre-harvest interval (PHI) practices and to Geo-tag vegetable farms producing vegetables with positive detection to pesticide residue. Data were gathered through interview with questionnaire to the farmers. The information gathered includes production techniques, crop management practices, and marketing strategy. Vegetable sampling was done on-farm and on commercial market for the pesticide residue analysis. Analysis was conducted at Cagayan Valley Integrated Agricultural Laboratory (CVIAL) and Cagayan State University at Lal-lo using Rapid Test Kit. Lastly, Geo-tagging was done using Global Positioning System (GPS) application. Based on the results, most farmers practice mono-cropping in vegetable production with pesticide chemicals being used in managing pest infestation. Application of the chemical was done early in the morning and late in the afternoon with a frequency of twice a week and every after harvest. The most commonly used pesticide were malathion, lannate and magnum. Furthermore, results of pesticide residue analysis showed that most vegetable samples taken from public market and on-farm had positive detection both in carbamates and organophosphate test. The concentration level of pesticide residue is higher than the Association of South East Asian Nation on Maximum Residue Level/Limit (ASEAN MRL).


Chiu. 1991. Taiwan Agricultural Research Institute Method Development and Application for Rapid Detection of Pesticide, rapid screening of fruits and vegetables for pesticide residues.

Chiu Y, Afeiche M, Gaskins A, Williams P, Petrozza J, Tanrikut C, Hauser R, Chavarro J. 2019.Fruit and vegetable intake and their pesticide residues in relation to semen quality among men from a fertility clinic.

Davalos E. 2011. Pest and Pesticide Use in eggplant Production in Central Luzon’,Technical Bulletin, vol 1., no 2, Department of Agriculture Philippine Center for Post-harvest Development and Mechanization

Davalos E. 2011. Pesticide Use in the Philippines, Feed the Future South Asia Eggplant Improvement Partnership

Del Prado-Lu J. 2015. Insecticide Residue in Soil, Water, and Eggplant Fruits and Farmers’ Health Effects Due to Exposure to Pesticides’, Environmental Health and preventive Medicine 20(1), 53-62

Francisco Sr. 2014. Socioeconomic Impacts of Bt Eggplant: Evidence from Multi-location Field Trials In: Gerpacio RV Aquino Ap, editors, Socioeconomic Impactof Bt Eggplant: Exante Case Studies in the Philippines. Ithaca, NY and Los Banos, Laguna: International Services for the Acquisition of agri-Biotech Applications and the Southest Asian Minister of Education Organizatio-Southeast Asia Regional Center for Graduate Study and Research in Agriculture. Pp 205-232

Lu J. 2010. Trends of Pesticide Exposure and Related Cases in the Philippines’, Journal of Rural Medicine 5(2), 153-164

NCPC, CPC, UPLB. Monitoring of Residue using Rapid Detection Kits.

Shibata Y. 1994. Actual Circumstances of Pesticide Residue Monitoring in the Philippines. Journal of Pesticide Science 19(4), S177-S181.

Tahil M. 2017. An Analysis of Pesticide Residue in Vegetables Sold In Zamboanga City, Philippines. JPAIR Multidisciplinary Research 29(1).