Wild sunflower interference in common bean fields in the Central Rift Valley of Ethiopia

The wild sunflower, an invasive alien species, is known to affect the performance of field crops. A experiment was conducted estimate effects different levels sunflower and common bean densities on yield components grain yield, as well quantify loss due their competition at varying densities. laid out in a randomized complete block design factorial arrangement with four replications. Hence, combinations three five were tested two locations. At 24 plants m−2, had maximum dry biomass 413.84 549.83 g−2 Adamitulu Melkassa, respectively. An increase density from 0 m−2 resulted reduction pods per plant up 62.41% 83.11%, respectively, Melkassa. Compared weed-free plot, highest (24 m−2) 4.6-fold seed pod. Weed-free plots Melkassa yielded yields 2.77 3.37 t ha−1, Common reduced by 88.12% 67.64%, sunflower. rectangular hyperbolic equation fits well. This study, hence, proposes that be kept no more than meter square minimize severe help growers make decisions control.