Study on control technique of glyphosate-resistant weeds.

The directed inter-row spraying experiment was conducted in an orangery to control weeds resistant to glyphosate.The results showed that 41% glyphosate AS(1 000～1 500 g aihm2)+70% saflufenacil WG(12.5～25.0 g aihm2)+adjuvant Dash(1% of spray liquid volume) could not only effectively control the damage caused by such glyphosate-resistant broadleaf weeds as Cayratia japonica,Acalypha australis,Erigeron philadelphicus and Solidago canadensis and the regeneration of perennial weeds,but also be equivalent to 20% paraquat AS in control speed and safe for the orange growth.