MATERIALS AND METHODS Labelled Systox. The P= compound, which docs not
isomerise, was synthesised from a P 3 2-containing compound by Dr. R. Muhlmann of …

The technique applied in these studies with schradan and systox showed promise-not only
for fundamental research on the biochemical behaviour of these materials-but also for …

E 1059, the active ingredient of the systemic insecticide Systox, was marked by the
incorporation of radioactive P, and its behaviour followed when applied to roots and leaves …

In the study of the persistence of residual films of insecticides it is an obvious advantage to
be able to follow the variation by a method which does not destroy or disturb the sample …

This review is largely concerned with the contamination of food as a result of the residual
effects of insecticides applied to growing crops and stored food products. Accounts are also …

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Application of paper chromatography is, of course, limited in part by the simplicity and
sensitivity of available procedures for the location of chromatographed products. A number …

In the two years which have elapsed since I last wrote (Martin, 1950) of the potential uses of
systemic insecticides, a deeper knowledge of the properties of these materials has become …

Methods Dimethoate Derivatives Utilized. In addition to dimethyl phosphoric,
phosphorothioic, and phosphorodithioic acids, the following compounds related to …

The development of effective methods for the use of systemic insecticides requires con-
sideration of the physiology, biochemistry, and anatomy of the plants on which they are to be …