The study aim was to explore the optimal dose and application time of pinoxaden in the control of Phalaris arundinacea in barley field. In the plot experi- ments, four doses （from 900 to 2 400 ml/hm^2） of pinoxaden ...The study aim was to explore the optimal dose and application time of pinoxaden in the control of Phalaris arundinacea in barley field. In the plot experi- ments, four doses （from 900 to 2 400 ml/hm^2） of pinoxaden （50 g/L） EC was ap- plied for the control of P. arundinacea in barley field. The optimal application time of pinoxaden was 3-4 leaf stage of P. arundinacea and 4-5 leaf stage of barley. In this stage of P. arundinacea, the efficacy of four doses was all more than 97%. The 50 g/l pinoxaden exhibited excellent efficacy to P. arundinacea, and the efficacy was better than that of the 69 g/L fenoxaprop-p-ethyl and manual weeding. In 4-5 leaf stage of barley and 3-4 leaf stage of P. arundinacea, when the pinoxaden was applied at the dose from 900 to 1 200 ml/hm^2, the efficacy for controlling P. arundi- nacea could be more than 97%. There was no harmful effect to other arthropods in field, and it was safe to barley. ds展开更多
文摘The study aim was to explore the optimal dose and application time of pinoxaden in the control of Phalaris arundinacea in barley field. In the plot experi- ments, four doses （from 900 to 2 400 ml/hm^2） of pinoxaden （50 g/L） EC was ap- plied for the control of P. arundinacea in barley field. The optimal application time of pinoxaden was 3-4 leaf stage of P. arundinacea and 4-5 leaf stage of barley. In this stage of P. arundinacea, the efficacy of four doses was all more than 97%. The 50 g/l pinoxaden exhibited excellent efficacy to P. arundinacea, and the efficacy was better than that of the 69 g/L fenoxaprop-p-ethyl and manual weeding. In 4-5 leaf stage of barley and 3-4 leaf stage of P. arundinacea, when the pinoxaden was applied at the dose from 900 to 1 200 ml/hm^2, the efficacy for controlling P. arundi- nacea could be more than 97%. There was no harmful effect to other arthropods in field, and it was safe to barley. ds
