The experiments were carried out at two sites of Agricultural Research Station (ARS), Bangladesh Agricultural Research Institute (BARI), Thakurgaon and farmer’s field at Rahimanpur union under Thakurgaon Sadar Upazila (located in between 25°40' and 25°59' north latitudes and in between 88°15' and 88°22' east longitudes), Thakurgaon, Bangladesh for consecutive two years (2010-11, 2011-12), first year and second year. According to the General Soil Type classification, both sites fall under non- calcareous brown floodplain soils. Topographically all the fields are high land (HL). Three crops- potato, mungbean, and T. aman rice were grown in Potato-Mungbean-T. Aman rice cropping pattern under the field experiments. The crop varieties were Cardinal for potato, BARI Mung6 for mungbean, and Binadhan7 for T. Aman rice. The onset and duration of growing seasons were winters (Rabi season, middle of October to the middle of March), spring (Kharif-I season, middle of March-end of May), and monsoon (Kharif-II season, early June – middle October) for potato, mungbean, and T. aman respectively. There were nine treatment combinations comprising of 3 levels of lime (0, 1, and 2 t ha-1) and 2 kinds of manure (poultry and farmyard manure) including no lime and manure treatments. Treatment combinations were L0M0 [Control (no lime, no manure)], L0MPM (no lime, manure as poultry manure), L0MFYM (no lime, manure as farmyard manure), L1M0 (1 t ha-1 lime, no manure), L1MPM (1 t ha-1 lime, manure as poultry manure), L1MFYM (1 t ha-1 lime, manure as farmyard manure), L2M0 (2 t ha-1 lime, no manure), L2MPM (2 t ha-1 lime, manure as poultry manure) and L2MFYM (2 t ha-1 lime, manure as farmyard manure). Farmyard manure was used at 5 t ha-1 and poultry manure at 3 t ha-1. The dose of urea, Triple Superphosphate (TSP), and Murate of Potash (MOP) was adjusted taking into account the amount of N, P, and K supply from manure that was added to the first crop. For all treatments, the fertilizer doses were rationalized for the second and third crops, as outlined in the Fertilizer Recommendation Guide [4]. Micronutrients Zn and B were applied once in a 1-crop cycle across the plots to sustain normal plant growth. Micronutrients (Zn, B) were supplied to the first crop only. The experiments were laid out in a randomized complete block design, with three replications. The unit plot size was 5m x 4m having an inter-plot space of 0.75m and an inter-block space of 1m. The plots were surrounded by 0.3m wide and 10cm high earthen bunds with 10cm deep and 1.0m wide irrigation channels along one side of the plots. The layout of the experiment was kept undisturbed for the 2-crop cycles. The land was prepared thoroughly by ploughing and cross-ploughing with a power tiller. Every ploughing was followed by laddering. Except for the first crop, the land was prepared every time by 4 - 5 spadings. Dolomite lime was added to the plots before 15 days of sowing/planting. The rates of lime were 1 and 2 t ha-1. Lime was applied to the first crop only with no application to the following crops over two years. Its residual effect was evaluated on the second, third, fourth, fifth, and sixth crops. Lime contained 20% Ca and 12% Mg. Two kinds of manure, viz. poultry manure (PM) and farmyard manure (FYM) were used. The rates of manure were 5 t ha-1 for FYM and 3 t ha-1 for poultry manure. Manure was applied to the first crop only in each crop cycle. Their residual effects were evaluated on the second and third crops. Manure was added 5 days before sowing/transplanting. Fertilizers such as urea, TSP, MOP, gypsum, ZnSO4. 7H2O and boric acid were used as sources of N, P, K, S, Zn, and B, respectively. All manures and fertilizers except urea to a full amount were applied to the plots during final land preparation. There were three equal splits of urea application for T. aman rice- land preparation, maximum tillering, and panicle initiation stage. Mungbean received full quantities of urea, TSP, MOP, and gypsum during land preparation. In the case of potato, half amount of urea and MOP and the full amount of TSP, gypsum, ZnSO4, and boric acid were applied at the time of final land preparation. The rest amount of urea and MOP was applied 30 days after planting at the time of earthing-up followed by irrigation. The crops were harvested when they attained maturity. Plot-wise yields (main product and by-product) and yield contributing parameters were recorded. Crop yield was expressed as t ha-1. The crop was cut from a 12m2 area of the center of each plot. The grains/seeds were threshed, cleaned, dried, and weighed. Grain and straw/stover yields were adjusted to 14% moisture content for rice, 12% moisture content for mungbean, and 80% moisture content for potato tuber, and 10% moisture content for potato haulm. Ten representative plants or hills from outside the harvested area within a plot were selected to record the yield contributing characters. The data collected for different parameters were statistically analyzed to find out the statistical significance of the experimental results. Data analysis was done by computer using MSTAT-C software. Mean values of all the treatments were calculated and analysis of variance for all the parameters was performed by F- test. The significance of the difference between treatment means was evaluated by Duncan’s Multiple Range Test (DMRT).