TITLE

Residue Dynamics of Spirotetramat and Imidacloprid in/on Mango and Soil

AUTHOR(S)
Mohapatra, Soudamini; Deepa, M.; Lekha, S.; Nethravathi, B.; Radhika, B.; Gourishanker, S.
PUB. DATE
October 2012
SOURCE
Bulletin of Environmental Contamination & Toxicology;Oct2012, Vol. 89 Issue 4, p862
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Spirotetramat is a unique insecticide having both phloem and xylem mobility and imidacloprid, a neonicotinoid insecticide, is one of the most widely used in the world. The combination formulation is very effective against sucking pests of mango. Residue dynamics of spirotetramat and imidacloprid in/on mango and soil was studied following application of the combination formulation, spirotetramat 12 % + imidacloprid 12 % (240 SC) at 90 and 180 g a.i. ha. Spirotetramat residues in/on mango fruits were 0.327 and 0.483 mg kg after giving 3 applications at 90 and 180 g a.i. ha, respectively. The residues remained on mango fruits for 7 days and dissipated with the half-life of 3.3 and 5.2 days, respectively. Residues of spirotetramat-enol, the major metabolite of spirotetramat in plant, were not detected in mango fruits. Initial residues of imidacloprid on mango fruits from the two treatments were 0.329 and 0.536 mg kg, respectively. Imidacloprid residues remained on mango fruits beyond 15 days and dissipated with the half-life of 5.2 and 8.2 days. The residues of spirotetramat, spirotetramat-enol and imidacloprid were found below quantifiable limit of 0.05 mg kg in mature mango fruits and field soil at harvest.
ACCESSION #
79823974

 

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