Persistence of Chlorpyriphos and Deltamethrin Residues in Cabbage

Authors

  • C. Narendra Reddy All India Network Project on Pesticide Residues, ANGRAU, College of Agriculture, Rajendranagar, Hyderabad, Andhra Pradesh (500 030), India
  • D. Jagdishwar Reddy All India Network Project on Pesticide Residues, ANGRAU, College of Agriculture, Rajendranagar, Hyderabad, Andhra Pradesh (500 030), India

Keywords:

Cabbage, dissipation, chlorpyriphos, delta­methrin, residue limit, waiting period

Abstract

The experiment was conducted during kharif -2007 with cabbage variety Varun. Three sprays of chlorpyriphos @ 0.05% and deltamethrin @ 0.01% was sprayed at head formation stage. The dissipation pattern of chlorpyriphos revealed that initial deposit of chlorpyriphos (2.75 mg kg-1) was dissipated below detectable residues at 15 days after third spray. While, in case of deltamethrin, that the initial deposit of cypermethrin (1.21 mg kg-1) was dissipated below detectable level at 7 days after third spray. The maximum residue limit for chlorpyriphos and deltamethrin was found to be 0.5 and 0.2 mg kg-1, respectively. The waiting period for safe harvest of cabbage heads after three sprays of chlorpyriphos (0.05%) and deltamethrin (0.01%) at head formation stage was 6.53 and 1.39 days, respectively. The half life values for chlorpyriphos and deltamethrin was 1.76 and 1.34 days, respectively.   

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Published

2011-09-07

How to Cite

1.
Reddy CN, Reddy DJ. Persistence of Chlorpyriphos and Deltamethrin Residues in Cabbage. IJBSM [Internet]. 2011 Sep. 7 [cited 2025 Sep. 21];2(Sep, 3):338-40. Available from: https://ojs.pphouse.org/index.php/IJBSM/article/view/167

Issue

Vol. 2 No. Sep, 3 (2011)

Section

Articles

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