Evaluating the Effectiveness of Various Herbicides for Managing Broadleaf Weeds in Faba Bean (Vicia faba L.)

Faba bean growth and yield are constrained by weeds. Thus, field experiments were conducted in Khorramabad, Iran in ۲۰۲۰-۲۰۲۱ to evaluate the effect of trifluralin ۹۶۰ g ai ha–۱ pre-plant applications (PPI), imazethapyr ۱۰۰ g ai ha–۱ pre-plant applications (PPI), imazethapyr ۱۰۰ g ai ha–۱ plus one hand weeding (OHW), imazethapyr۱۰۰ g ai ha–۱ POST (post-emergence herbicide), bentazon ۹۶۰ g ai ha–۱ POST, oxyflorfen ۱۹۲ g ai ha–۱ preemergence (PRE), oxyflorfen PRE + OHW, diclosulam ۲۱ g ai ha–۱ PRE, diclosulam PRE plus OHW, one or two hand weeding on weed control and yield in faba bean. Weeds, such as safflower, wild mustard, cow cockle, and three-horn bedstraw were dominant in both years. Weed biomass in uncontrolled plots was ۱۷۳ g m-۲ in ۲۰۲۰ and ۱۴۵ g m-۲ in ۲۰۲۱. The lowest weed biomass was observed in diclosulam PRE + OHW, bentazon POST, and two hand weeding treatments. Imazethapyr PPI, trifluralin PPI, and imazethapyr POST herbicides negatively affected faba bean yield. In ۲۰۲۰ and ۲۰۲۱, Diclosulam + OHW decreased total weed density by ۸۵% and ۸۲%, respectively, compared to the untreated sample (control). These ideas resulted in ۵۳% and ۶۱% yield reductions in the weedy check plots compared to the weed-free control plots in ۲۰۲۰ and ۲۰۲۱, respectively. All herbicides resulted in minor damage to the beans, with diclosulam and OHW + diclosulam exhibiting the least impact.

کلیدواژه ها:

Faba bean ، Hand weeding ، Herbicide ، Weedy check ، Weed-free