A field experiment was conducted from 2017 to 2018 to evaluate effective and economical integrated management package for the control of Raphanus raphanistrum in faba bean in Waliso District of South West Shoa, Ethiopia. The experimental design used was spilt plot design with two levels of plowing frequency assigned as main plot and eight weed management practice as sub plot in three replications. Data recorded on crop and weed related parameters. Results obtained indicated that the interaction

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... effect of plowing frequency and combination of herbicides with hand weeding frequency significantly affected plant height, number of pods per plant, seeds per pod, crop biomass and grain yield of faba bean. The highest mean grain yield (1541 kg/ha) was obtained from the interaction effect of plowing three times with application of pendimethalin at 3 lt ha -1 supplemented with once hand weeding at 30-35 days after sowing. This is followed by plowing three times and application of S-Metolachlor at 1 litter ha -1 supplemented with twice hand weeding at 30-35 and 50-55 days after sowing that gave a mean grain yields of 1463kg/ha. The interaction effect of plowing frequency and combination of herbicides with hand weeding frequency also significantly affected the weed population, weed plant height and biomass. The lowest R. raphanistrum population, height and biomass was obtained from the interaction of three times plowing and application of S-metolachlor at 1 litter ha -1 supplemented with twice hand weeding at 30-35 and 50-55 days after sowing. Economic analysis showed that trice plowing combined with application of Pendimethalin at 3 lt ha -1 supplemented by once hand weeding at 30-35 days after sowing gave the highest Net benefit (23174 birr) followed by three times plowing combined with application S-Metolachlor at 1 lt ha -1 supplemented by twice hand weeding. Therefore, three times plowing and application of S-Metolachlor herbicide supplemented by twice hand weeding at 30-35 and 50-55 DAS or three times plowing and application of Pendimethalin herbicide at 3 lt ha -1 supplemented with one time hand weeding at 30-35 DAS is recommended for economic control of R. raphanistrum in faba bean production. R. raphanistrum weed count, height and fresh biomass There was significant interaction effect of plowing frequency, application of herbicide and hand weeding on R. raphanistrum plant count, height and biomass in faba bean field (Table 3 ). The lowest (18.67 and 21.33 weed/m 2 ) R. raphanistrum plant count was recorded from three times plowing + twice hand weeding at 30-35 and 50-55 DAS and three times plowing + application S-metolachlor at 1 lt ha -1 supplemented by twice hand weeding at 30-35 and 50-55 DAS, respectively. The highest (62.67 weeds/m 2 ) weed count was recorded from twice plowing + application of S-metolachlor at 1 lt ha -1 supplemented with twice hand weeding at 30-35 and 50-55 DAS followed by twice plowing + application of S-metolachlor at 1 lt ha -1 supplemented with once hand weeding at 30-35 DAS, but most of treatments showed statistical parity. Therefore, three times plowing + application of S-metolachlor at 1 litter ha -1 and three times plowing + application S-metolachlor at 1 lt ha -1 supplemented with twice hand weeding at 30-35 and 50-55DAS were effective in reducing R. raphanistrum weed population as compared to other treatments. There was significant interaction effect of plowing frequency, application of herbicide and hand weeding on R. raphanistrum weed height and weed biomass in faba bean ( Table 3 ). The shortest (36.36cm) R. Raphanistrum height was recorded from twice plowing + application of Pendimethalin at 3 lt ha -1 supplemented with twice hand weeding at 30-35 and 50-55 DAS followed by three times plowing+ application of Pendimethalin at 3 lt ha -1 supplemented with twice hand weeding at 30-35 and 50-55 DAS and three times plowing+ application of Smetolachlor at 1 litter ha -1 supplemented with twice hand weeding at 30-35 and 50-55DAS, respectively, but as par with twice plowing+ S-metolachlor at 1 lt ha -1 supplemented with twice hand weeding at 30-35 and 50-55 DAS. The tallest (126.1 cm and 124.9 cm) mean R. raphanistrum height was recorded from three times plowing + application of pendimethalin at 3 lt ha -1 and three times plowing + application of S-metolachlor at 1 litter ha -1 , respectively. But non-significantly with twice plowing + Pendimethalin at 3 lt ha -1 . This indicted that R. raphanistrum height was highly influenced by application of Pendimethalin at 3 lt ha -1 and S-metolachlor at 1 lt ha -1 when supplemented by twice hand weeding at 30-35 and 50-55 DAS as compared to other treatments. This is because of the fact that R. raphanistrum can managed at different germination stage because of the integration of pre emergence herbicide and twice hand weeding at different time. The lowest weed fresh biomass (150.0 kg/ha and 191.7 kg/ha) was recorded from three times plowing + application of S-metolachlor at 1 lt ha -1 supplemented with twice hand weeding at 30-35 and 50-55 DAS and three times plowing + application of Pendimethalin at 3 lt ha -1 supplemented with twice hand weeding at 30-35 and 50-55 DAS, respectively (Table 3 ). The highest (9008.5 kg/ha) fresh weed biomass was recorded from three times plowing + weedy check. Non-significant different was observed among all treatment which was supplemented by twice hand weeding. The higher weed fresh biomass in weedy check might be due to higher weed density that provided an opportunity for the weeds to compete vigorously for nutrients, space, light, and water and carbon dioxide. These results are in agreement with findings of Alfonso et al., (2013) and Das and Yaduraju, (1999) who reported maximum weed dry weight in weedy check treatments.