Typhlodromus ndibu Pritchard and Baker (Acari: Phytoseiidae), collected from citrus orchards in the southern region of Vietnam, has been identified as a natural enemy red mite Panonychus citri (McGregor) Tetranychidae). It holds potential laboratory-reared predator for biological control purposes. However, research on T. remains limited. This study focuses investigating effects fenpyroximate, a...

Systematic fractionation of a fruit extract from Argentine Melia azedarach L., which was monitored by an insect antifeedant bioassay, led to the isolation of meliartenin, a limonoid antifeedant, which existed as a mixture of two interchangeable isomers. At 4 microg/cm2 and 1 microg/cm2, the isomeric mixture was as active as azadirachtin in strongly inhibiting the larval feeding of Epilachna pae...

Abstract Background Synthetic insecticides employed in seed treatment are often phytotoxic, especially at slightest misapplications. Cowpea is mainly attacked by Callosobruchus maculatus . It established that azadirachtin, myristicin and α-humulene based (botanical insecticides) eco-friendly have activity against C. thus considered ideal candidates research efforts targeted developing plant opt...

The alfalfa weevil, Hypera postica (Coleoptera: Curculionidae), is a major pest of alfalfa Medicago sativa L. (Fabaceae). While H. postica usually causes the most damage before the first cutting, in summer of 2015 damaging levels of the pest persisted in Montana well after the first harvest of alfalfa. Although conventional insecticides can control H. postica, these chemicals have adverse effec...

The health, sustainability, and commercial viability of eastern black walnut (Juglans nigra) are currently under threat from thousand cankers disease. The disease is caused by an invasive bark beetle species, the walnut twig beetle (Pityophthorus juglandis), and its associated fungal pathogen (Geosmithia morbida). Range expansion of the beetle and pathogen has likely been facilitated by transpo...

In female adults of Gryllus bimaculatus, ovaries as well as the abdominal integument pro­ duce free and conjugated ecdysteroids in vitro (Hoffmann et al., 1992). The aim of the current study was to determine the influence of various potential ecdysteroid biosynthesis effectors (RH 5849, KK 42, diflubenzuron, ketoconazole, azadirachtin, acetylenic and allenic cholesteryl derivatives B l, B6, AL2...

In this study, Metarhizium rileyi isolates (M. NIPHM, M. MTCC 4254 and 10395) were evaluated for their compatibility with other entomopathogenic fungi viz. anisopliae NBAIR (Ma-35), commercial formulation of anisopliae, (Local), Beauveria bassiana ITCC 7126, B. (Local) Verticillium lecanii neem based formulations- (azadirachtin 0.03%EC) 0.15%EC) along synthetic insecticide spinetoram 11.7%SC. N...