Persistence of triazine herbicides in soils.

Abstract

Although phytotoxic residues of the triazine herbicides are objectionable when, in some soils and under some environmental conditions, sensitive plants are injured the season after application, residual activity is essential for weed control and soil sterilization. Without residual activity, frequent applications of less persistent herbicides would be necessary, and costs of weed control would, therefore, be high. A good example of the advantages of residual phytotoxicity was described by Horowitz (1964), who suggested that a single application of simazine or atrazine at the beginning of winter rains in Israel would control winter weeds and maintain sorghum planted the next spring free of weeds until harvest.KeywordsWeed ControlEffective MicroorganismTriazine HerbicideAnnual ApplicationAtrazine DegradationThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.