Journal of Crop Protection

Chemical weed management programs for cycloxydim-tolerant maize in Iran

https://doi.org/10.48311/jcp.2020.1493
Volume 9, Issue 3
September 2020
Pages 471-481
Journal of Crop Protection

Document Type : Original Research

Authors

M. Annabestani 1
E. Izadi Darbandi 1
M. Vidakovic 2
M. Zargar 3

1 Department of Agrotechnology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran.

2 Maize Research Institute, Zemun Polje, Serbia.

3 Department of Agrobiotechnology, Institute of Agriculture, RUDN University, 117198 Moscow, Russia.

Abstract
In order to introduce new chemical weed management program in maize weed control in Iran, a study was conducted during 2014 and 2015. Experiment were carried out in a randomized complete block design with three replications. 15 treatments of the common maize herbicides, including nicosulfuron, foramsulforon, eradicane and 2,4-D + MCPA were applied in their recommended doses, moreover the treatments related to cycloxydim with dicamba + tritosulfuron were used with different doses and in different times along with two control treatments (weedy and weed-free). Treatments contained 75-150 g a.i. ha-1 of cycloxydim, showed similar results with the common treatments including nicosulfuron, foramsulforon, eradicane and 2,4-D + MCPA. However, treatments with high doses of cycloxydim, had a significant reduction in weed density and weed biomass. There were no significant differences between the effects of treatments on maize grain yield and biomass. Despite the acceptable weed control of the combined treatment of cycloxydim with dicamba plus tritosulfuron, maize canopy could overcome weed growth. Based on the results and by considering cycloxydim efficacy in controlling perennial grassy weeds in maize plantation, this chemical is a suitable option during different growing stages of weeds and maize. Finally, the application of 200-300 g a.i. ha-1 of cycloxydim combined with dicamba plus tritosulfuron was the best option from an economic and environmental safety points of view.

Keywords

Maize
cycloxydim
herbicide tolerance
herbicide resistance
Subjects
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