𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Chemical and biological examination of commercial pyrethrum extracts for insecticidal constituents

✍ Scribed by R. M. Sawicki; E. M. Thain

Publisher
John Wiley and Sons
Year
1961
Tongue
English
Weight
688 KB
Volume
12
Category
Article
ISSN
0022-5142

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Insecticidal activity of pyrethrum extra
Insecticidal activity of pyrethrum extract and its four insecticidal constituents against house flies. IV.β€”Knock-down activities of the four constituents
✍ R. M. Sawicki; E. M. Thain πŸ“‚ Article πŸ“… 1962 πŸ› John Wiley and Sons 🌐 English βš– 436 KB

## Abstract The knock‐down activities of pyrethrins I and II and cinerins I and II were studied on house flies (__Musca domestica__ L.) by a measured drop technique. Unanaesthetised flies held by suction during dosage were inspected at frequent intervals for 5 h. The tests were done at 20† with the

Insecticidal activity of pyrethrum extra
Insecticidal activity of pyrethrum extract and its four insecticidal constituents against house flies. III.β€”Knock-down and recovery of flies treated with pyrethrum extract with and without piperonyl butoxide
✍ R. M. Sawicki πŸ“‚ Article πŸ“… 1962 πŸ› John Wiley and Sons 🌐 English βš– 861 KB

## Abstract The influence of concentration and of time after treatment on knock‐down and recovery from the action of pyrethrum extract alone and with piperonyl butoxide at 2 : 1 and 1 : 5 w/w, was studied on house flies __(Musca domestica__ L.) by a measured drop method. The unanaesthetised flies,

Insecticidal activity of pyrethrum extra
Insecticidal activity of pyrethrum extract and its four insecticidal constituents against house flies. V.β€”knock-down activity of the four constituents with piperonyl butoxide
✍ R. M. Sawicki πŸ“‚ Article πŸ“… 1962 πŸ› John Wiley and Sons 🌐 English βš– 612 KB

## Abstract The paralysis (knock‐down) and the subsequent recovery or death of female house flies treated by a measured drop method was studied with each of the four active constituents of pyrethrum extract alone and in the presence of piperonyl butoxide (1 part of pyrethroid + 10 parts of piperony