ارزیابی صفات کمی و کیفی چغندرقند بذری تحت تیمارهای کنترل شیمیایی علف هرز

Weeds are one of the major problems in all fields of sugar beet seed and Diversity and density is how that it is not to control the amount of damages to crops is substantial. Hence it should be thinking about ways to deal with weeds down. Therefore, in order to evaluate the quantity and quality of sugar beet chemical weed control seeds under different treatments Chemical weed control a research combines with five treatments and a mechanical control (hand weeding) treatments during the growing season with four replicates of control in a completely randomized block design with statistical and research station in elite sugar beet seed production Firoozkooh city in the northeast of Tehran was achieved in 2011 crop year. The results of this experiment showed that the intake of different herbicides have a significant effect on the level of 1% on the studied traits, the fourth level of the day - growth varied (750, 1000, 1250, 1500) found that consumption of 5 kg Pyramin soil before transferring root and four liters Betanal Progress A.M in the 2 to 4 leaf stage of weeds and repeated consumption of four liters Betanal Progress A.M after two weeks of enhanced traits such as weight of Root, total weight of plant and fresh weight of Total seed. hand weeding weeds Overall weeds with soiling to plant foot, so when you move between rows exist enhanced attributes such as seed sub 3.5, standard seed, Oversize, percentage and rate of germination. it can be concluded that the use of herbicides such as Pyramyn and Betanal Progress A.M is able to control weeds in sugar beet fields. Hence, we can control the growth and yield of sugar beet plants with desirable traits, we address this limiting factor.