Tillage practices have strong impact on the weed infestation and weed dynamics in field crops. In this study, consisted of two independent experiments, influence of zinc (Zn) and boron (B) application on weed dynamics in wheat planted in long-term (maintained for the last seven years) no tillage (NT) and plough tillage (PT) systems was evaluated. In the first experiment, Zn was applied as foliar spray (0.025 M), soil application (10 kg ha -1 ) and seed priming (0.5 M); while in second experiment, B was delivered as soil (1 kg ha -1 ) and foliar applications (0.01 M) and seed priming (0.01 M). No Zn and B application were taken as control in first and second experiment, respectively. In both experiments, the most important weeds identified were sweet clover (Melilotus indica L.) and little seed canary grass (Phalaris minor L.). Application of Zn and B did not have significant effect on the weed infestation. In first experiment, NT wheat had less total weed density (40% and 48%) than PT wheat during 2016-2017 and 2017-2018, respectively. No tillage reduced the density of sweet clover by 54% and 29% and density of little seed canary grass by 22% and 30% during first and second years, respectively compared with PT system. In second experiment, density of total weeds was higher (30%) in PT than NT wheat during both years. Zero tillage had lower density of sweet clover (47 and 33%) and little seed canary grass (28 and 40%) during 2016-2017 and 2017-2018, respectively. In conclusion, switching from conventional tillage to conservation tillage may help reducing the weed infestation in wheat. However, application of Zn and B didn't influence the weed infestation in wheat established under conventional tillage (PT) and conservation tillage (NT) systems.
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