Substituted Urea Key performance features. These photosynthetic inhibitors are applied pre-emergence, postemergence or, occasionally, postdirected. Lorox generally controls many annual grasses and a few annual broadleaf species. It persists in soil for roughly 60 days. Plant injury symptoms.
Plants show chlorosis and drying of green tissue and yellowing of leaf tips and margins.
Lower leaves may be affected first, and newer leaves may be unaffected. Organic Phosphorus Key performance features. These amino acid inhibitors are applied only postemergence. Roundup and Touchdown generally control annual and perennial grasses and broadleaf species. They are non-selective and will kill any living plant tissue they come in contact with.