The aim of the present investigation is to develop a vertical roller with double grooved rows metering device for garlic cloves planting. Laboratory and field experiments were carried out to evaluate the performance of the developed metering device. Laboratory experiments were conducted using a laboratory test rig under different metering device speeds, agitator speeds and cloves size to estimate cloves discharge and cloves damage. Field experiments were conducted under different planter forward speeds to measure plant emergence percent, garlic-cloves spacing, missing-hills, double-cloves percent and total crop yield. The main results can be summarized in the following points: The maximum garlic-clove discharges of 24, 22, 21 and 66 clove/metering-device revolution were obtained with metering device speed of 150 rpm(1.5 m/s)and agitator speed of 135 rpm(0.41 m/s)by using small, medium, large and random (mixed) clove-sizes respectively. The minimum garlic-clove damage was obtained with metering-device speed range of 50 - 350 rpm(0.5 - 3.6 m/s)and agitator speed of 85 rpm(0.26 m/s)using  medium and large garlic-clove sizes of zero %.By increasing forward speed from 1.4 to 4.7 km/h plant-emergence percent decreased from 99.62 to 97.66 and from 99.93 to 99.76 %, double cloves decreased from 10.6 to 6.1 and from 4.2 to 4.1 %,the total crop yield decreased from 7.33 to 5.12 and from 8.67 to 6.22 Mg/fed using one and double grooved-rows, respectively. While, averages of garlic cloves spacing increased from 9.2 to 10.5 cm, missing hills increased from 0.21 to 1.77 and zero to zero %, under the same previous conditions.