Studies on Synthetic Pyrethroids. Part VII.

Synthetic Pyrethroids: Toxicity and Metabolism

Synthetic Pyrethroids are synthetic analogs of naturally occurring pyrethrins, found in extract from Chrysanthemum flowers. They were launched as a replacement of highly toxic class of pesticides like DDT and Organophosphates in 1980s. Major success of pyrethroids lies in the low toxicity of them towards mammals as well as humans and due to which they have wide range of applications right from ...

Effects of Synthetic Pyrethroids on Phosphate Solubilizing Activity of Microorganisms

Pesticides are the important agrochemicals used for prevention of crops from pests. Their use has been largely increased in last few decades. The application of pesticides starts from the pre sowing stage. Different treatments include soil application, seed treatment, foliar spray, etc. Repeated applications of pesticides contaminate the soil. Soil is the most important site of biological inter...

Degradation, metabolism and toxicity of synthetic pyrethroids.

Synthetic pyrethroidal compounds undergo biodegradation in mammals both oxidatively and hydrolytically, and depending on the type of compound, either of the pathways may predominate. Thus, (+) - or (+/-) -trans isomers of the chrysanthemumate ester of primary alcohols such as fenothrin, furamethrin, proparthrin, resmethrin, and tetramethrin (and possibly permethrin, too) are metabolized mainly ...

Hæmatological Technique. Part VII

Estimating With Objects - Part VII

This column is the seventh in a series about estimating. The first was in the July 1996 issue. The most recent several columns have focused on estimates based on lines of code (LOC). There are, however, several types of source code as well as many other important product types. Examples are new, modified, and reused code, as well as documentation, screens, reports, and files. The principal ques...