Persistence of quinalphos in/on chilli and cropped soil

Raut A N, Patil C S, Saindane Y S, Deore B V, Landge S A


Studies on the dissipation of quinalphos in/on chilli were undertaken by following two applications at an interval
of 10 days starting at fruit initiation stage. Two doses of quinalphos at recommended (250 g a.i ha-1) and double the
recommended dose (500 g a.i ha-1) were evaluated for residues. The results revealed that in case of quinalphos 25 EC@250
and 500g a.i ha-1,the initial residues were 0.96 mg kg-1 and 1.83 mg kg-1 and were found to be below detection limit(BDL) on
7th and 10th day, respectively. The residues of quinalphos were found to be below detection limit (BDL) in soil at harvest. The
residual half life values recorded were1.99 and 2.07 days, respectively. The Pre-Harvest Interval (PHI) of seven days can be
suggested for quinalphos for residue free chilli.


Chilli, persistence, quinalphos

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