Study of chemical control of field bindweed (Convolvulus arnensis L.) in fallow in sugarbeet, tomato, and potato

In this study، efficiency of Glyphosate (Roundup)، Imaztapyr (Persuit)، Camba M (MCPA 340 g+ dicamba 80 g)، 2،4-D (U-46 Difluid)، 2،4- D +MCPA (U-46 cambifluid)، Flouroxypyr (Staren)، and Triclopyr (Garlon) in view of field bindweed control was studied in fallow systems of sugarbeet، tomato and potato. Field bindweed plants were sprayed during fallow. After fallow and crops cultivation، the effect of herbicide treatments were evaluated on the density and biomass of field bindweed and the crops yield. The experiments was done based on complete randomized block design with 15 treatments and 3 replications. On the basis of the results، Glyphosate 8 L/ha with 84% increase in sugarbeet yield and 32% density and 76% biomass control of field bindweed، is recommended as the best treatment for bindweed control in sugarbeet. 2،4-D+MCPA 1. 5L/ha with 240% increase in tomato yield and 64% density and 81% biomass control of field bindweed، is recommended as the best treatment for bindweed control in tomato. 2،4-D 2 L/ha with 55. 5% increase in potato yield and 70% density and 70% biomass control of field bindweed، is recommended as the best treatment for bindweed control in potato.