The Absorption, Translocation and Breakdown of Schradan Applied to Leaves, Using 32p‐labelled Material

The methods of propagation of plant material for experimental use, the procedure for preparing the radioactive solution, and its application to leaves either by dipping or spraying are described. A description is given of the conditions under which the plants were kept, the procedure adopted at sampling involving leaching of the treated leaves, subdivision of the plant and preparation of samples for determination of ‘schradan’ and ‘schradan equivalent’ by liquid counting. The methods of compiling results to determine the distribution and status of the applied schradan in or on the leaves at harvest, are outlined.