Evaluating the Efficacy of MaisTer 3.1% OD (Foramsulfuron + Iodosulfuron + Isoxadifen-ethyl) in the Control of Different Weeds in Corn Fields of Karaj, Jiroft and Fars Regions

Document Type : Research Article

Authors

• M. A. Baghestani ¹
• E. Mamnoei ²
• fakhroddin ghezeli
• E. Zand ¹
• F. Lotfi Mavi ³

¹ Plant Pest and Disease Research Institute

² Jiroft Agricultural Research Station

³ Weed Science

10.22067/jpp.v28i3.43561

Abstract

In order to evaluate the efficacy of MaisTer 3.1% OD (Foramsulfuron 3% + iodosulfuron 0.1% + isoxadifen-ethyl 3%) in the control of weeds in corn fields, a series of experiments were conducted during 2010 in Karaj, Zarghan and Jiroft. A series of RCBD design with four replications. Treatments were application of a) Nicosulfuron (Kruz) at 2 lit.ha-1, b) Bromoxynil+MCPA (Bromicid M.A) 1.5 lit.ha-1 plus hand weeding of grasses, c) 2,4-D+MCPA (U46 Combifluid) at 1.5 lit.ha-1 plus hand weeding of grasses, d) Rimsulfuron (Titus) at 50 g.ha-1 + Citogate at 0.2%, e) Foramsulfuron (Equip) at 2.5 lit.ha-1, f) Nicosulfuron+Rimsulfuron (Ultima) at 175g.ha-1, tank mix of Bromicide MA at 1 lit.ha-1 + Kruz at 1.5 lit.ha-1, g) Foramsulfuron + iodosulfuron + isoxadifen-ethyl (MaisTer) at 1.25, 1.5, 1.75 lit.ha-1 and h) weed free control. Different characteristics of weeds and corn plants including percent of damages of treatment to weeds and corn based on EWRC scale, weed population and dry matter reduction were evaluated 30 days after spraying. Grain yield was measured after harvest. Results indicated that tank mix of Bromicide MA plus Kruz was the best treatment for weed control and produced the highest corn grain yield. The efficacy of MaisTer at 1.5 lit.ha-1 was similar to Kruz and Ultima for borad leaf weeds as well as some grasses, but the efficacy of MaisTer to control common cocklebur (Xanthium strumarium) and foxtail (Setaria sp.) was better than dual purpose registered herbicides Kruz and Ultima.

Keywords

• 2,4-D + MCPA
• Bromoxynil+MCPA
• Nicosulfuron
• Rimsulfuron

20.1001.1.20084749.1393.28.3.5.5

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