Issues in Biological Sciences and Pharmaceutical Research
Vol.3(9),pp. 94-99, September 2015
Article ID/15/BSPR023/06 pages
Available online at https://www.journalissues.org/IBSPR/
Author(s) agree that this article remain permanently open access under the terms of the Creative Commons Attribution License 4.0 International License.
Original Research Article
Persistence and dissipation of mancozeb residues in/on tomato in Bidar District of Karnataka State, India
1Jagadish G,K, 2Jayalakshmi S.K and 1*Sreeramulu K.
1Department of Biochemistry, gulbarga University, gulbarga-585106,India
2College of Agriculture (University of Agricultural Sciences-Raichur), Aland Road, Gulbarga-585101, India.
*Corresponding Author Email: ksramu(at)rediffmail.com
Fax : +91-8472-245632
An experiment was conducted during 2012-2013 to study the persistence and dissipation of mancozeb residue during fruit growth stage of tomato hybrid indoamericon-Hyb-F1. Treatment spray application of mancozeb75% WP (Crystal M-45) was given two times at 7 days intervals, at the recommended and double the recommended dosage of 1.0 g/ L and 2.0 g/L. Spray application was carried out in Kharif (July to Oct, 2012) and Rabi (Nov 2012 to Mar, 2013) seasons. Initial residue deposits of mancozeb (as CS2) in two different seasons were found in the range of 3.41 to 6.07 mg/kg. Residue dissipated after 3 days of application in Kharif (1.86 mg/kg) and Rabi (1.79 mg/kg) seasons for the recommended dose. At the harvest time (10 days after the last spray) the residue level reached below detectable limit of recommended dose in Kharif (0.1 mg/kg) and Rabi (0.12 mg/kg), at double the recommended dose the residues were 0.24 and 0.32 mg/kg. The half-life of mancozeb residue was found to be 2.12 to 2.29 days. Based on the maximum residue limit value of 3.0 mg/kg (as CS2) as Codex Alimentarius the pre harvest interval for recommended and double recommended dose of mancozeb treatment was 2 and 3 days, respectively.
Key words: CS2, mancozeb, tomato, persistence, pesticide residue analysis.