Residues effect of recently registered herbicide Lumax (Mesotrione+S-metolacholor+Terbuthylazine) and some sulfonylurea herbicides on wheat after corn in Moghan

This study was conducted to evaluate the carry over effects of a new registered herbicide Lumax (mesotrione+ terbuthylazin+ s-metalachlor) in two application rate (2.1 and 2.4 l ai ha-1) and time (pre-emergence and post-emergence) and four sulfonylurea herbicides of corn included Titus (rimsulfuron), Samson (nicosulfuron), Equip (foramsulfuron), Ultima (nicosulfuron+ rimsulfuron) on wheat at the same year. The experiment was implemented in a randomized complete block design with four replications at Moghan. Wheat was planted in the same place of corn immediately after harvest. Phytotoxicity syndromes, seedling dry weight, plant height and yield of wheat were assessed at each proper time. Residue of mesotrione+ terbuthylazin+ s-metalachlor (2.4 l ha-1, post emergence) had significant effects on reduction of yield and kernel number per ear (27%), but other traits including seedling weight and plant height was not significantly influenced by herbicides residue.