Abstract

The Field survey of major pulse oil crops: faba bean, field pea, soybean, ground nut and sesame was conducted in part of Western Oromia in West Shoa, Horro Guduru Wollega, East Wollega and Buno Bedele Zones during 2019 and 2020 main cropping season covering six districts, 41 Kebeles and 91 fields.  Frequency, Abundance, Dominancy and Similarity Index, were computed for each weed species. The most dominant families according to frequency and number of weed species were Poaceace, Asteraceae, Commelinaceae and Amaranthaceae. Generally Annual weeds were dominant in all crops and broad leaf weeds dominated over grass and sedge types for most crops. The most frequent and dominant weed species consisted of Guizotia scaraba and Spergula avensis for faba bean; Guizotia scaraband Raphanus raphanistrium for field pea; Ageratum conyzoides and Digitaria ternata for sesame; Ageratum conyzoides and Guizotia scaraba for groundnut; Ageratum conyzoides, and Guizotia scaraba for soybean crops fields.