Environmental problems associated with non-ferrous smelter operations are a problem in many countries around the world. Copper production Armenia has resulted metal contamination of soils and general degradation environmental quality. In this study we attempted to determine thresholds phytotoxicity metals contaminated by copper Armenia. The studied were sampled Alaverdi valley, located ~200 km ...

High Cd concentrations and excess Zn often interfere with mineral nutrients uptake by ion competition as well as affecting membrane permeability (Siedleska, 1995). The induced changes in cell ion homeostasis generally provoke different physiological disorders resulting finally in plant growth inhibition. It has been suggested that Cd and Zn have a similar mode of toxic action (Breckle, 1991; Cl...

A brief overview of biological activity of organotin compounds is given, with emphasis on activity against plant-feeding arthropods. Plictran miticide, containing cyhexatin (tricyclohexylhydroxystannane), the first product to be fully commercialized for control of plant-feeding mites on a broad range of agricultural crops, is used as a model to indicate the chemistry and potential performance, ...