PERSISTENCE OF PROPINEB RESIDUES IN PAPAYA

A K AHUJA, SOUDAMINI MOHAPATRA

Abstract


Spray treatment of propineb (Antracol 70 WP) was given to papaya crop (variety Solo) three times at 15 days interval @ 2 and 4 g/litre during June July, 2006 to study the persistence and residues. Initial residue deposit of 3.51 and 7.18 mg/kg of propineb was recovered from whole papaya fruit. Residues dissipated at faster rate and at harvest (30 days after the last spray) the residues were below the detectable level of
0.1 mg/kg. The residues of both the treatments dissipated at the half life of 4.5 days. Pre-harvest interval (PHI) or Waiting Period (WP) recommended were 1 and 4 days respectively for two doses. In the subsequent season of experiment September October, 2006 with total rainfall of 95.8 mm. The initial deposits of propineb (0 day) were 3.55 and
7.73 mg/kg with half life of 6.7 and 5.9 days respectively for recommended and double the recommended doses. The suggested pre-harvest intervals were 1 and 8 days for recommended and double of the recommended dose, respectively.

Keywords


Papaya; propineb; persistence; residues; waiting period

Full Text:

PDF

Refbacks

  • There are currently no refbacks.


=====================================================================

PMHE, Pest Management in Horticultural Ecosystem. 2013 © Association for Advancement of Pest Management in Horticultural Ecosystems, all right reserved.
Use of this website signifies your agreement to the Terms of Use.

Concept Conceived By: Chief Editor and Online Team,AAPMHE
Executed By: Thippeswamy S, Asst. Chief Technical Officer
ICAR-IIHR,Bengaluru-89

Proudly powered by OJS