Weed management plays an important role in the success of conservation agriculture (CA) and help in gaining optimum crop yields. The knowledge of CA and weed management practices in a particular area allows to study, ecological interaction between crops and weeds to develop sustainable management strategies. A field study was conducted at research farm at ICAR-Directorate of Weed Research, Jabalpur (M.P.) between 2021-23 with an objective to study the influence of tillage and weed management practices on weed dynamics, and yield of greengram [Vigna radiata (L.) Wilczek] under long-term maize-wheat-greengram cropping system. The experiment was laid out in a split-plot design and replicated thrice. The main plots was assigned to two crop establishment methods [conventional tillage (CT) and zero tillage with retention of previous crop residues (ZT+R) in system] and four weed management practices [weedy check, recommended herbicide (RH), integrated weed management (IWM), herbicide rotations (HR)] in sub-plot. Results revealed that the lowest total broad leaved weeds density (11.8 and 10.2 no./m2) and total sedges (22.1 and 11.8 no./m2) were obtained with ZT+R. Similarly, total biomass of total broad-leaved weeds (13.6 and 11.0 g/m2), total sedges (16.8 and 8.9 g/m2) and more weed control efficiency (56.55% and 59.10%) with ZT+R in the year 2021-22 and 2022-23, respectively. Integrated weed management obtained lowest weed density of total broad-leaved weeds (8.5 and 6.5 no./m2), total grassy weeds (9.7 and 10.8 no./m2) and total sedges (10.7 and 7.0 no./m2). The total biomass of broad-leaved weeds (5.3 and 4.7 g/m2), grassy weeds (4.9 and 5.3 g/m2), sedges (7.5 and 2.2 g/m2) with highest WCE 84.80% and 85.28% during 2021-22 and 2022-23, respectively.  Lower weed parameters under ZT+R noted with higher seed yield of 908 and 994 kg/ha, respectively) In IWM, seed yield was highest with 1129 and 1203 kg/ha during 2021-22 and 2022-23, respectively. Phytosociological analysis revealed the dominance of Cyperus rotundus (L.) and Echinochloa colona (L.) with the highest importance value index.