Dissipation of Quinaiphos in Kinnow Mandarin Fruits under Subtropical Conditions of Punjab, India

Dissipation of quinaiphos in kinnow mandarin fruits under subtropical conditions of Punjab, India, was studied. Residues of quinalphos were detected separately both in the rind and the pulp of kinnow mandarin fruits after its second application at 2.0 and 4.0 mL/L, respectively. The average initial deposits of quinalphos at single and double the dosages were observed to be 0.65 and 1.64 mg/kg, respectively, in the rind. The corresponding average initial deposit of quinalphos in the pulp was found to be 0.05 and 0.16 mg/kg, respectively, at both the dosages which were found to be less than its maximum residue limit (MRL) of 0.25 mg kg super(-1). Quinalphos residues in the pulp were below determination limit of 0.01 mg/kg after third day of application of the insecticide.