N-1-ARYL-N-2-DICHLOROACETYL GLYCINE AND ALANINEAMIDES AS SELECTIVE SAFENERS FOR CORN AGAINST CHLOROACETANILIDE HERBICIDES

Structurally new N-1-aryl-N-2-dichloroacetyl glycine and alaninamides were prepared. Greenhouse experiments were conducted to determine the effectiveness of the new compounds in protecting corn seedlings from c hloroacetanilide (acetochlor, alachlor, dimethachlor, metazachlor, met olachlor) injury using dichlormid and BASF-145138 as standard safeners . High rates of chloroacetanilides caused significant injury to sensit ive corn hybrids. The most acive derivatives reduced injury to corn fr om dimethachlor and metolachlor and lesser extent from acetochlor and metazachlor. The most effective derivatives of the new compounds displ ayed better safening activity than the standards. Some of the new comp ounds were found to be selective safeners when formulated as a tank mi xture with metolachlor in a 1:33-100 safener-to-herbicide ratio shelvi ng the same or better activity than the standard used.