Abstract
Thiamethoxam and dimethoate are two insecticides used to control hoppers and inflorescence midges in mango. Thiamethoxam (0.008 and 0.016 %) and dimethoate (0.06 and 0.12 %) were sprayed on Dashehari mango trees during the pre-mature stage of fruit (first week of May) to study their dissipation kinetics and risk assessment in mango fruit. Thiamethoxam dissipated in fruit from 1.93 and 3.71 mg kg−1 after 2 h of spraying to 0.08 and 0.13 mg kg−1 after 20 days of spraying at single and double doses, respectively. Its residue did not persist beyond 20 days in fruit. Dimethoate dissipated in fruit from 2.81 and 5.34 mg kg−1 after 2 h of application to 0.12 and 0.19 mg kg−1 after 10 days of application at single and double doses, respectively. No residue was detected in fruit beyond 10 days after its application. Both ready-to-harvest mature mango fruit and pulp (after 40 days of spraying) were free from any residues of these insecticides at both the concentration levels. The rate of dissipation of these insecticides followed first-order kinetics in fruit with residual half-lives of 4.0 to 4.5 days for thiamethoxam and 2 days for dimethoate. Based on their MRL values of 0.5 and 2.0 mg kg−1 in mango, pre-harvest intervals of 7 and 11 days, and 6 and 7 days were suggested for thiamethoxam and dimethoate, respectively, after spraying at single and double doses. The theoretical maximum residue contribution (TMRC) values for both the insecticides, calculated for residues corresponding to each sampling date, were found to be below the maximum permissible intake (MPI) values on mango fruit (except for dimethoate double dose up to 3 days); hence, both thiamethoxam and dimethoate could be considered non-hazardous to consumers at the above doses and time intervals.
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References
Ahuja, A. K., Mohapatra, S., & Awasthi, M. D. (2005). Persistence and dissipation of dimethoate and dicofol residues in/on papaya. Pest Management in Horticultural Ecosystem, 2, 39–43.
Anonymous. (1998). Residues of pesticides in mango and guava fruits. Compiled data of All India Coordinated Research Project on Pesticide Residues. IARI, New Delhi: Division of Agricultural Chemicals.
Anonymous (2010). http://www.cishlko.org/Technologies/MangoHopper_advisory.pdf. Accessed 10 August 2011.
Awasthi, M. D. (1993). Decontamination of insecticide residues on mango by washing and peeling. Journal of Food Science and Technology, 30, 132–133.
Awasthi, M. D. (2004). Contamination of fruits, vegetables and orchard soils with pesticide residues. In P. Dureja, D. B. Saxena, J. Kumar, M. Gopal, S. B. Singh, & R. S. Tanwar (Eds.), Pesticide: environment and food security (pp. 134–139). New Delhi: Society of Pesticide Science, India.
Awasthi, M. D., & Ahuja, A. K. (1991). Evaluation of the persistence and dissipation pattern of dimethoate and fenthion residues on mango fruits for their safe waiting periods. Indian Journal of Horticulture, 48, 243–246.
Bagyalakshmi, J., Kavitha, G., & Ravi, T. K. (2011). Residue determination of dimethoate in leafy vegetables (spinach) using RP-HPLC. International Journal of Pharma Science and Research, 2, 62–64.
Barik, S. R., Ganguly, P., Kunda, S. K., Kole, R. K., & Bhattacharyya, A. (2010). Persistence behaviour of thiamethoxam and lambda cyhalothrin in transplanted paddy. Bulletin of Environmental Contamination and Toxicology, 85, 419–422.
Chauhan, R., Kumari, B., & Sharma, S. S. (2013). Persistence of thiamethoxam on okra fruits. Pesticide Research Journal, 25, 163–165.
Heather, N. W., Hargreaves, P. A., & Corcoran, R. J. (1987). Dimethoate and fenthion for postharvest disinfestation treatments of fruits and vegetables against Dacus tryoni (Diptera, Tephritidae) Dec 9–10. Plant Quarantine and Phytosanitary Barriers to Trade in the ASEAN, 1986, 165–171.
Hem, L., Park, J. H., & Shim, J. H. (2010). Residual analysis of insecticides (lambda-cyhalothrin, lufenuron, thiamethoxam and clothianidin) in pomegranate using GC-μECD or HPLC-UVD. Korean Journal of Environmental Agriculture, 29, 257–265.
Hoskins, M. L. (1961). Mathematical treatment of loss of pesticide residues. FAO Plant Protection Bulletin, 9, 163–169.
Database, I. H. (2014). Indian horticulture database 2014. Gurgaon, India: National Horticulture Board.
Karmakar, R., & Kulshrestha, G. (2009). Persistence, metabolism and safety evaluation of thiamethoxam in tomato crop. Pest Management Science, 65, 931–937.
Karmakar, R., Singh, S. B., & Kulshrestha, G. (2012). Water based microwave assisted extraction of thiamethoxam residues from vegetables and soil for determination by HPLC. Bulletin of Environmental Contamination and Toxicology, 88, 119–123.
Khan, B. A., Farid, A., Asi, M. R., Shah, H., & Badshah, A. K. (2009). Determination of residues of trichlorfon and dimethoate on guava using HPLC. Food Chemistry, 114, 286–288.
Liu, S., Zheng, Z., Wei, F., Ren, Y., Gui, W., Wu, H., & Zhu, G. (2010). Simultaneous determination of seven neonicotinoid pesticide residues in food by ultraperformance liquid chromatography tandem mass spectrometry. Journal of Agricultural and Food Chemistry, 58, 3271–3278.
Le Lagadec, M. D., Louw, C. E., & Labuschagne, C. L. (2009). The control of scale insects and mealy bugs on mangoes in South Africa using neo-nicotinoids. A review of the experimental work from 2001 to 2005. Acta Horticulturae, 820, 549–558.
Louw, C. E., Le Lagadec, M. D., Labuschagne, C. L., & Erasmus, A. A. (2009). Efficacy of Actara 240 SC (thiamethoxam), applied as a drench against mango seed weevil (Sternochetus mangiferae) on mangoes in South Africa. Acta Horticulturae, 820, 559–566.
Nobel, A., Walsh, J. J., & Outhwaite, R. J. (1990). A field unit for determining dimethoate in fruit and vegetables dips. Pesticide Science, 29, 387–395.
Singh, S. B., & Kulshrestha, G. (2005). Residues of thiamethoxam and acetamaprid, two neonicotinoid insecticides, in/on okra fruits (Abelmoschus esculentus L.). Bulletin of Environmental Contamination and Toxicology, 75, 945–951.
Singh, S. B., Mukherjee, I., Maisnam, J., Kumar, P., Gopal, M., & Kulshrestha, G. (2009). Determination of pesticide residues in integrated pest management and nonintegrated pest management samples of apple (Malus pumila Mill.). Journal of Agricultural and Food Chemistry, 57, 11277–11283.
Varghese, T. S., Mathew, T. B., George, T., Beevi, S. N., & Xavier, G. (2011). Dissipation study of dimethoate, ethion and oxydemeton methyl in chilli. Pesticide Research Journal, 23, 68–73.
Venkateswarlu, P., Rama Mohan, K., Ravi Kumar, C., & Seshaiah, K. (2007). Monitoring of multi-class pesticide residues in fresh grape samples using liquid chromatography with electrospray tandem mass spectrometry. Food Chemistry, 105, 1760–1766.
Waghulde, P. N., Khatik, M. K., Patil, V. T., & Patil, P. R. (2011). Persistence and dissipation of pesticides in chilly and okra at north Maharashtra region. Pesticide Research Journal, 23, 23–26.
Ying, G., & Kookana, R. S. (2004). Simultaneous determination of imidacloprid, thiacloprid and thiamethoxam in soil and water by high-performance liquid chromatography with diode-array detection. Journal of Environmental Science and Health. Part. B, 39, 737–746.
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Bhattacherjee, A.K., Dikshit, A. Dissipation kinetics and risk assessment of thiamethoxam and dimethoate in mango. Environ Monit Assess 188, 165 (2016). https://doi.org/10.1007/s10661-016-5160-3
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DOI: https://doi.org/10.1007/s10661-016-5160-3