Field evaluation of native Bacillus thuringiensis strains against Helicoverpa armigera (Hubner) in field bean (Lablab purpureus)

C LALITHA, T MURALIKRISHNA, V SRINIVASA RAO

Abstract


A field experiment was conducted in a Randomized Block Design to evaluate 28 native isolates of B.t. along with a reference strain HD1 and untreated control against Helicoverpa armigera in Field bean. Solid and liquid formulations of native B.t strains were tested against H. armigera and it was found that larval population and per cent pod damage were significantly less in solid formulation compared to liquid formulation. Field bean pod yield (kg/ha) was more in solid formulation compared to liquid formulation. B.t strain 281 resulted in minimum larval population and pod damage by H. armigera and maximum healthy green pod yield.

Keywords


Bacillus thuringiensis; Field bean; Helicoverpa armigera

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