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1. The highest CR, for vetch obtained from treatment 45-55-control (2.64) and for barley from seed ratio 65-35-control (1.83).
Conclusion
The results in this study showed various seed rate had noticeable effect on forage yield, LER and weed control. In this experiment changing seed rate in two tested plants (barly- commen vetch) changed the number and weed species, as a result noticeable changing was created in their competitive power. Result showed that seed rate (35% barley-65% common vetch) was better than other treatment, not only in use efficiency of environment, but also it had more dry forage yield. Also, former seed rate had effective role in decreasing the weed biomass. This important result was related to reduced light penetrate at the bottom of cover crop and probably lack of competition in access to environmental resources was also affected. So using this seed density for mentioned area is recommended for reducing weed competition and improving the quality and quantity of dry forage.
Acknowledgments
The authors gratefully acknowledge the teachers of College of Agriculture of Lorestan University, for their critical review of the manuscript.]]>
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