Investigating of Integrated Weed Management on Sugar Beet (Beta vulgaris) Yield in Miandoab

The experiment was carried out as randomized complete block design with four replications to evaluate integrated weed management on Sugar Beet yield in Miandoab region in summer 2007 years. Treatments were included of Sugar Beet density in three levels (8، 10 and 12 Plant. m-2) and various weed control methods in five levels (Cultivation، Using of Betanal Progres A. M (for broad leaf weeds) + Naboo S (for Grass weeds) herbicides، Using of Betanal Progres A. M + Naboo S herbicides with cultivation، Complete weed control (Weedfree) and Without weed control (weed infested). The results indicated that complete control and herbicide using treatments were 100% control on one month sampled stage. The lowest weeds density and weeds dry weight were complete weed control، herbicide and herbicide with cultivation treatments. The highest and lowest sugar beet root yield with 73. 93 and 5. 7 ton/hac were 10 plant/m2+ weeding and 8 plant/m2 + non weed control treatments respectively.