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GK Jagadish
SK Jayalakshmi
K Sreeramulu

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GK Jagadish
SK Jayalakshmi
K Sreeramulu

Issues in Biological Sciences and Pharmaceutical Research
Vol.3(9),pp. 94-99, September 2015
ISSN 2350-1588
Article ID/15/BSPR023/06 pages
Available online at https://www.journalissues.org/IBSPR/
DOI:http://dx.doi.org/10.15739/ibspr.018
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

Tel.: +91-8472-263289,
Fax : +91-8472-245632



date Received: August 6, 2015     date Accepted: August 28, 2015     date Published: September 11, 2015


 Abstract

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.


Jagadish et al