Effects of the phenmedipham, desmedipham, ethofumesate, metamitron and triflusulfuron-methyl on weeds and sugar beet

Abstract

This study was conducted to determine the effect of post-emergence herbicides mixtures on weed dry weight and sugar beet productivity. Additions of metamitron, chloridazon and triflusulfuron-methyl with phenmedipfam + desmedipham + ethofumesate increased the weed spectrum controlled. The addition of metamitron gave effective control of Tripleurospermum perforatum (Merat) M. Lainz., Chenopodium album L., Galium aparine L. and Veronica arvensis L. than chloridazon. Reducing the doses of phenmedipfam + desmedipham + ethofumesate and metamitron gave less control of C. album, T. perforatum. It was noticed that by reducing the rate of phenmedipfam + desmedipham + ethofumesate from 91+71+112 g a.i. ha-1 to 68+53+84 g a.i. ha-1 in mixture with triflusulfuron-methyl the dry weight of weeds has increased by 75-87%. The herbicides investigated did not have any negative influence on growing and development of sugar beet