عنوان مقاله [English]
In order to evaluation the efficacy of indaziflam on control of purple nutsedge in sugarcane an experiment was conducted in 2015 growing season in a sugarcane field in Shoaeibiyeh, Shoushtar, Khouzestan, Iran. Trial was randomized complete block design with four replications per treatments. Treatments were 1-indaziflam (75 g ai ha-1, as preemergence); 2-indaziflam (50 g ai ha-1 as preemergence); 3- Trifloxysulfuron sodium+ametryn (1875 g ai ha-1,as postemergence); 4-2,4-D+MCPA (1687.5 g ai ha-1); 5-2,4-D+MCPA+metribuzin (1350 g ai ha-1+1400 g ai ha-1); 6- weeding and 7- weed infested. The results showed indaziflam as 75 g ai ha-1 affected purpule nutsedge growth as dry weight and density reduction percentage of purple nutsedge was reduced 100% until 30 day after treatment (DAT). However, indaziflam efficacy was reduced over time. Other herbicides such as indaziflam as 50 g ai ha-1 and trifloxysulfuron sodium+ametryn indicated good effect in purple nutsedge control compared with 4-2,4-D+MCPA and 2,4-D+MCPA+metribuzin. Single stem weight (0.70 kg m-2), the middle internode diameter (1.83 cm), number of internode (18. 3 cm) and cane yield (117.88 t ha-1), were the greatest in indaziflam (75 g ai ha-1). The greatest brix (21.40%), invert sugar (25.53%), recoverable sugar (11.0%) and the lowest fiber content (12.60 t ha-1) were obtained in indaziflam (75 g ai ha-1).