Performance of pneumatic precision seed drill in black carrot sowing

In this study, non-pelleted black carrot seeds were planted over the ridges under field conditions. Planting was performed over three narrow spacing rows with a vacuum-type pneumatic single-seed planter. Planter forward speeds were arranged as 0.42, 0.84 and 1.25 m s-1 and on-row seed spacing was arranged as 2.34, 4.65 and 6.87 cm. Experimental plots were observed during the initial month after planting. Mean germination times, germination rate index, field emergences, on-row plant distribution patterns and number of plants per unit area were evaluated. Variation coefficients indicating the on-row plant regularity were between 62.86 and 86.42%, mean germination rates between 15.98 and 23.07 days, germination rate index values between 0.321and1.502 per meter, field emergence rates between 34.26 and 69.70% and number of plants between 37.66 and 70.66 plant m-2.