TETRAHYDRO-1,3-OXAZINE, HERBICIDE AGENTS, CONTAINING ACETANILIDES AS HERBICIDAL ACTIVE SUBSTANCES, AND THESE TETRAHYDRO-1,3-OXAZINE AGENTS AS ANTAGONISTIC AGENTS, AND THEIR USE FOR APPLICATION TO THE APPLICATION.

摘要

New tetrahydro-1,3-oxazines of the formula IMAGE where R denotes linear or branched haloalkyl of up to 3 carbon atoms, R1, R2, R3, R4 and R5 are identical or different and each denotes hydrogen or linear or branched alkyl of up to 3 carbon atoms, R6 denotes hydrogen or linear or branched alkyl of up to 8 carbon atoms, R7 denotes hyrogen, linear or branched alkyl of up to 8 carbon atoms, alkoxyalkyl of up to 6 carbon atoms or dialkoxyalkyl of up to 8 carbon atoms, and R6 and R7 may together form a methylene chain of 4 or 5 carbon atoms. The compounds are antagonistic agents and, as such, increase the tolerance of herbicidal acetanilides by crop plants. Herbicidal agents containing the tetrahydro-1,3-oxazines in combination with haloacetanilides are suitable for combating unwanted plant growth in Indian corn and cereal crops.