Field evaluation of a formulation of Pseudomonas fluorescens against Culex quinquefasciatus larvae and pupae.
VCRC B426, 0.09% emulsifiable concentrate (EC) formulation developed from a metabolite of Pseudomonas fluorescens was tested for efficacy against Culex quinquefasciatus larvae and pupae. At application rates of 100, 200, 300 ml/m2, the formulation caused 100% elimination of larvae and pupae at day 1 after treatments and >80% reduction in pupal density for periods of 7, 12 and 11 days in cesspits and 5, 9 and 10 days in U-shaped drains. In both the habitats, the efficacy of the formulation against pupae was 1.7 times more at 200 ml/m2 than at 100 ml/m2. An increase in dosage to 300 ml/m2 did not improve the efficacy in cesspits but a marginal increase was observed in drains.
Sadanandane
C
C
Vector Control Research Centre (ICMR), Medical Complex, Indira Nagar, Pondicherry 605 006, India. vcrc@vsnl.com
Reddy
C M R
CM
Prabakaran
G
G
Balaraman
K
K
D000818:Animals; D001426:Bacterial Proteins; D003465:Culex; D007814:Larva; D010572:Pest Control, Biological; D011551:Pseudomonas fluorescens; D011679:Pupa
D001426:Bacterial Proteins