Thiram residues on glasshouse lettuce.

Abstract

Thiram dust was applied at different concentrations and dates to lettuce crops and residue levels were analysed at harvest or at weekly intervals. The growth of the plant was the major factor influencing residue levels. The later the application the greater was the residue. The use of irrigation, either by spray lines or trickle equipment, appeared to have only a small effect on residue levels. Some of the fungicide could be washed off, but only if irrigation was applied in the early stages of crop development. (Abstract retrieved from CAB Abstracts by CABI’s permission)