In the first year (2014-15), statistically, significant differences were observed in relation to days to flowering, days to maturity, the number of pod/plant, 100-seed weight, and seed yield of the tested cowpea genotypes. However, the final plant stand, plant height and the number of yellow mosaic infected plant/plot were not influenced significantly by the genotypes. Days to flowering were the highest for the genotype of CPS-13 (57 days), which was comparatively similar to that of CPS-8 (55 days) and CPS-9 (55 days), whereas the shortest number of days were needed by CPS-1 and CPS-3 (43 days). On the other hand, CPS-7 and CPS-10 required the highest number of days to maturity (97 days) and it was similar to CPS-8 and CPS-9 (96 days) but the lowest time (90.5 days) needed for CPS-2 and CPS-15. Besides, the check variety (BARI Felon-1) needed 47 and 94.5 days to become flowering and maturity, respectively. The highest number of pod/plant (10.18) was found in CPS-13 followed by CPS-12 (9.73) and CPS-11 (9.25) but the lowest number (5.33) was recorded in CPS-9. However, the biggest size of seed was observed in CPS-15 (19.85 g/100-seed) and it was similar to CPS-12 and CPS-1 (18.9 and 18.3 g, respectively). In terms of grain yield, CPS-13 yielded the highest (1982.19 kg/ha) followed by CPS-12 (1727.81 kg/ha). Yields obtained from CPS-6, CPS-14, and CPS-9 were 1587.50, 1476.25, and 1332.81 kg/ha, respectively. The lowest yield (539.38 kg/ha) was found in CPS-11, whereas the check variety BARI Felon-1 gave a yield of 884.70 kg/ha. The genotypes CPS-10, CPS-7, and CPS-5 also produced poor yields (603.13, 616.56, and 710.00 kg/ha, respectively). It was also found that the increment of grain yield attained the highest (124.05%) in CPS-13 followed by CPS-12 (95.30%) over the check variety BARI Felon-1. An increase of 79.44%, 66.86%, and 50.65% grain yield was computed in CPS-6, CPS-14, and CPS-9, respectively. The yield reduction became the highest (-39.03%) in CPS-11 followed by CPS-10 (-31.83%) and CPS-7 (30.31%) over the check. In the second year (2015-16), statistically, significant differences were observed in relation to the number of days to flowering, final plant population, number of pod/plant, 100-seed weight, and grain yield of the tested genotypes of cowpea. However, the number of days to maturity was not influenced significantly by the genotypes. The earliest flowering (44.33 days) was occurred by CPS-12 followed by CPS-6 (46.00 days), while the number of days to flowering in BARI Felon-1 was 55.00 but the longest time (56.00 d) was required CPS-9 to flowering. The check variety BARI Felon-1 had the highest population of plants (9.21/linear meter) during the harvest period. Comparatively lower plant populations were observed in CPS-6 (7.88), CPS-9 (7.04), CPS-13 (7.04), CPS-14 (6.75), CPS-12 (6.67) and CPS-2 (6.58). The lowest population (4.92) was found in CPS-3. The entry CPS-3 produced the longest plant (210.27 cm) but to some extent, reduced height was recorded from the plants of CPS-2 (177.40 cm), CPS-13 (167.53 cm) and CPS-12 (143.00 cm). Nevertheless, the shortest plant (70.20 cm) was achieved in BARI Felon-1. The highest number of pod/plant (15.2) was found in BARI Felon-1 followed by CPS-6 (9.72) and CPS-13 (9.42) but the lowest number of pods (2.37) was recorded in CPS-9. The biggest size of seed was observed in CPS-3 (12.73 g/100-seed), which was similar to that of CPS-15 (12.47 g), CPS-12 (11.67 g) and CPS-9 (11.07 g). The weight of 100-seed was the lowest (7.90 g) in BARI Felon-1. The grain yield became the highest (1463.19 kg/ha) in BARI Felon-1. The higher yield was also provided by CPS-6 (1022.22 kg/ha) but slightly lower yields were obtained from CPS-13 (847.22 kg/ha, CPS-12 (737.50 kg/ha), CPS-15 (730.56 kg/ha) and CPS-14 (722.22 kg/ha). It was also found that the grain yield decreased from 30.14% to 83.29% over the check variety BARI Felon-1. In an average of two cropping seasons (2014-15 and 2015-16), the entry CPS-13gave the highest yield of grain (1415 kg/ha) followed by CPS-6 (1305 kg/ha) and CPS-12 (1233 kg/ha) but the check variety (BARI Felon-1) gave the yield of 1174 kg/ha. CPS-14 also produces a comparatively better yield (1099 kg/ha). Research findings further indicated that CPS-13 showed a 20.49% increased yield over the check variety (BARI Felon-1). Besides, CPS-6 and CPS-12 exhibited 11.16% and 5.03% more yield, respectively than that of BARI Felon-1.