Mon 37532 phytotoxicity is affected by surfactant and ammonium nitrate

摘要

Herbicides often are applied with surfactants and with the addition of 2 to 4percent (v/v) 28percent nitrogen liquid fertilizer (ammonium nitrate + urea). Greenhouse experiments were conducted to determine the influence of surfactant hydrophilic: lipophilic balance (HLB) on efficacy of MON 37532, a new herbicide by Monsanto, applied with surfactant alone and with ammonium nitrate. Linear alcohol ethoxylate (LAE) surfactants with C_(8-10) or C_(12-14) alcohol were or tended to be more effective with 12 than 8 or 16 HLB. HLB did not influence C_(16-18) LAE surfactant enhancement of MON 37532 phytotoxicity to oats.