Method for determining settling rates of Bacillus thuringiensis serotype H-14 formulations.

سطح حساسیت لارو Anopheles stephensi به ( Bacillus thuringiensis (serotype H-14

Field evaluation of the microbial insecticide Bacillus thuringiensis serotype H-14 against floodwater mosquitoes.

Four experimental formulations of the microbial insecticide Bacillus thuringiensis var. israelensis (serotype H-14) were evaluated in the field against larvae of the floodwater mosquitoes Aedes nigromaculis and Psorophora columbiae with ground and aerial application methods. The formulations included ABG-6108D (Abbott Laboratories, North Chicago, Ill.), a wettable powder containing about 400 IU...

LOCAL PRODUCTION OF PRIMARY POWDER OF BACILLUS THURINGIENSIS SEROTYPE H-14 IN IRAN AND DETERMINATION OF ITS INSECTICIDAL PROPERTIES AGAINST CULEX PIPIENS AND ANOPHELES STEPHENSI

Three media formulated from molasses and cornsteep liquor and another media based on the basal medium formulation of IPS-82 were assessed for the growth and production of insecticidal properties of B. thuringiensis H-14 .• Bacterial powders prepared from the broth cultures were assayed against the larvae of Culex pipiens and Anopheles stephensi. A standard powder of IPS-82 was included in ...

Efficacy and field evaluation of Bacillus thuringiensis (H-14) and B. sphaericus against floodwater mosquitoes in California.

The microbial control agents Bacillus thuringiensis (H-14) and B. sphaericus were evaluated in laboratory and field against Psorophora columbiae. Bacillus sphaericus strain 2362 was also tested in the field against Aedes melanimon. Psorophora columbiae was slightly more susceptible than Culex quinquefasciatus to active strains of B. sphaericus. The LC90 for active strains ranged from 0.013 to 0...

Evaluation of granular corncob formulations of Bacillus thuringiensis serovar israelensis against mosquito larvae using a semi-field bioassay method.

A semi-field bioassay method using commonly available laundry tubs evaluated efficacy and residual activity of 6 granular corncob formulations of Bacillus thuringiensis serovar israelensis against laboratory-reared late 3rd- and early 4th-instar larvae of Aedes taeniorhynchus introduced to the tubs. These formulations produced appreciable larval mortalities (up to 75%) for 9 days posttreatment,...