The field experiments were conducted during kharif seasons of 2008 and 2009 at the Agronomy Research Area, Birsa Agricultural University, Ranchi on sandy loam soil to study the effect of sowing time and weed control methods on weed flora and productivity of direct seeded upland rice. Results showed that broad leaf weeds constituted 56%, grasses 40% and sedges 4% of the total weed population at 30 days after sowing. Post monsoon sown direct seeded rice produced significantly higher grain (1967 kg/ha) and straw (2967 kg/ha) yield with net return of Rs 9465/ha and benefit: cost ratio of 1.92 than pre monsoon sown crop owing to higher total and effective tillers, grains/ panicle and 1000- grain weight along with lower weed density, weed dry matter and higher weed control efficiency. Grain yield of rice was statistically at par among pretilachlor + safener 0.5 kg/ha and butachlor 1.5 kg/ha + one hand weeding at 25 days after sowing (DAS) but significantly higher than other weed control methods except weed free. Application of pretilachlor + safener 0.5 kg/ha was remunerative in direct seeded rice as it had higher net return (Rs 9459/ha) and benefit: cost ratio (1.98).