Roots of spring wheat plants can absorb the residues of ¹⁴C-pboxim, which was applied in the potting soil just before sowing, and transmit them to parts of plants above ground through stems. The stems only play a part cf transport and a few chemical residues can be ct deained in the stems. Much more residues can be held in the leaves, especially in flag leaves.The ¹⁴C-phoxim residues which were accumulated in the leaves at different levels of plants were contionusly transmitted and dissociated by transpirat...