As part of our continuing research on isoquinoline acaricidal drugs, this paper reports the preparation of a series of the 2-aryl-1-cyano-1,2,3,4-tetrahydroisoquinolines with various substituents on the N-phenyl ring, their in vitro acaricidal activities against Psoroptes cuniculi, a mange mite, and discusses their SAR as well. The structures of all compounds, including 12 new ones, were elucid...

The virulence of two products of the fungus Beauveria bassiana (LCPP and Bassianil) on adult Anastrepha ludens (Loew) (Diptera: Tephritidae) and their effect on the mating performance of infected males was evaluated in laboratory and field cage tests. The horizontal transmission capacity of the fungus during copulation or attempted copulation also was quantified using inoculated males as well a...

The laboratory experiments were carriedout at the Institute of Organic Farming (IOF), UAS, Dharwad, during 2014-2015 to study bioefficacy different formulations Metarhizium anisopliae against coconut rhinoceros grubs, Oryctus (Linnaeus). Among oil based formulation, rice bran (60%) + corn (40%) formulation found least LC50 value (1.99 x 106 cfu/ml) 432 h. In granular and wettable powder recorde...

Two freshwater fishes, Rasbora sumatrana (Cyprinidae) and Poecilia reticulata (guppy) (Poeciliidae) were exposed for a four-day period in the laboratory condition to a range of copper (Cu) and cadmium (Cd) concentrations. Mortality was assessed and median lethal concentrations (LC50) were calculated. LC50 increased with decrease in mean exposure times for both metals. For R. sumatrana, LC50s fo...

The susceptibility of Culex quinquefasciatus to chemical insecticides in two field sites in Kuala Lumpur was evaluated using the WHO standard susceptibility test. Less then 7days old female mosquitos, reared from wild caught females were exposed to discriminating dosages of insecticides at recommended exposure periods. The larval bioassay were conducted using the multiple concentrations and the...

In this paper, tests and standards on assessing smoke toxicity of materials will be reviewed first. Toxic potency data such as EC50, LC50, IC50, LT50 and IT50 are briefly introduced and criticized for suitability to use. Whether LC50 is a good toxic potency parameter will be discussed. Preliminary tests on some of these toxic data for selected building materials commonly used will be assessed. ...

b a ckground: development of insecticide resistance occurred due to the continuous and misuse of synthetic insecti- cides therefore, the recent study was conducted to explore eco-friendly plant extracts that have some potential to sup- press mosquito larval population. m e t hods: who recommended mosquito larval bioassay method for insecticide was used while for the analysis of cit- rus oils fo...

Beta-cyfluthrin (OMS 3051), a new synthetic pyrethroid and one of the stereoisomers of cyfluthrin, was studied for insecticidal activity against eight mosquito species. Its larvicidal activity with LC50 values of 5.62 x 10(-5) and 1.19 x 10(-4) mg/l respectively for Culex quinquefasciatus and Aedes aegypti was comparable with that of deltamethrin. This pyrethroid was more effective against the ...

The efficacy of neem oil on the mortality, growth and feeding responses of epilachna beetle showed that all the larval instars were susceptible to this oil. The LC50 values were higher at 3 instar and it was lowest on 1 instar. The LT50 values of oil increases proportionately with increasing larval age and with decreasing oil concentration. Neem oil significantly prolonged larval and pupal peri...

Streptomyces sp. and Trichoderma are soil microorganisms isolated from shallot fields that can act as biological agents increase crop production. Nezara viridula, the southern green stink bug, is leading pest of soybean during generative period, which cause damage up to 80%. This study aimed determine efficacy a liquid biopesticide formula using mixture coconut water potato extract containing u...