This study was conducted to develop and evaluate a seed-metering mechanism for berseem and lucerne crops. Fluted roller-type metering devices having trapezoidal and asymmetric grooves and an indented cell-type roller metering mechanism were developed. Laboratory testing of the developed metering devices was conducted for both crops at a forward speed of 1.5, 2.0, and 2.5 km.h−1, and the performance was evaluated in terms of seed rate, seed-to-seed distance, variance coefficient of seeding uniformity, and seed damage percentage. There was a significant effect of the type of metering device and forward speed on the dependent parameters at 5% of level significance for both crops. Considering the desired seed rate and minimum seed damage as the main parameters of interest, a trapezoidal groove fluted roller metering device and forward speed of 2.0 km.h−1 were selected as suitable parameters for both crops. At selected independent parameters, for berseem crop, seed rate, seed damage, seed-to-seed spacing, and variance coefficient of seeding uniformity were 10.14 kg.ha−1, 1.49%, 6.96 mm, and 4.3%, whereas, for lucerne seeds, it was 13.97 kg.ha−1, 2.78%, 7.17 mm, and 3.9%, respectively. This study provides suitable metering devices for sowing these crops without changing the metering mechanism and is used as a technical reference for sowing machinery researchers and manufacturers.