𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Detection and estimation of the biologically active constituents of pyrethrum

✍ Scribed by H. J. Smith

Publisher
John Wiley and Sons
Year
1960
Tongue
English
Weight
369 KB
Volume
11
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. 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