SYNERGISTIC EFFECT OF NEEM AND Pongamia OILS ON THE BIOEFFICACY OF DELTAMETHRIN AGAINST DIAMONDBACK MOTH, Plutella xylostella (L.) (LEPIDOPTERA: YPONOMEUTIDAE) ON CABBAGE

V SRIDHAR, B JHANSI RANI

Abstract


Laboratory and field studies were conducted to assess the synergistic effect of two plant oils viz., neem and Pongamia on the bioefficacy of  deltamethrin 2.5 EC against diamondback moth, Plutella xylostella (L.) on cabbage during 2007-2009 at Indian Institute of Horticultural Research, Bangalore. Under laboratory conditions, the combination of deltamethrin @ 0.5 mL/L and pongamia oil (0.2 %) resulted in  highest efficacy (86.67 %) followed by deltamethrin (0.5 mL/L) and Pongamia oil (0.1 %). Under field conditions also,   Pongamia oil (0.2 %) with deltamethrin (1mL/L) showed good synergism both in terms of reducing   P. xylostella and in realizing higher marketable yield of cabbage. The findings indicate the potential of plant oils as synergists of synthetic pyrethroids.

Keywords


Diamondback moth; neem oil; Plutella xylostella; Pongamia oil; synergists

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