Laboratory screening of different Bacillus thuringiensis strains against certain lepidopteran pests and subsequent field evaluation on the pod boring pest complex of pigeonpea (Cajanus cajan).
Laboratory evaluation of different Bacillus thuringiensis subspecies revealed that B. thuringiensis subsp. kurstaki (NCIM 2514) at 10(8) spores/ml concentration caused more than 85% mortality to the neonate larvae of the lepidopteran insects Spodoptera litura (F.) and Phthorimaea operculella (Z.). This strain at 10(10) spores/ml concentration was effective against the major lepidopteran pests comprising the pod boring complex of pigeonpea (Cajanus cajan), viz. Helicoverpa armigera (H.) and Exelastia atomosa (W.) under the field trials. Total grain yield from this treatment was least 1.5 times more than the untreated control.
Puntambekar
U S
US
Division of Biochemical Sciences, National Chemical Laboratory, Pune Maharashtra, India.
Mukherjee
S N
SN
Ranjekar
P K
PK
D000818:Animals; D001413:Bacillus thuringiensis / Q000472:pathogenicity*; D001681:Biological Assay; D004726:Endosulfan / Q000494:pharmacology; D007887:Fabaceae / Q000469:parasitology*; D006843:Hydrocarbons, Chlorinated; D007194:India; D007306:Insecticides / Q000032:analysis / Q000494:pharmacology; D007915:Lepidoptera; D010572:Pest Control, Biological; D010935:Plant Diseases; D010946:Plants, Medicinal; D014329:Tropical Climate
D006843:Hydrocarbons, Chlorinated; D007306:Insecticides; D004726:Endosulfan