DOSING OF DIFFICULT-TO-SOW SEEDS BY SEEDING DEVICES
The sowing unit is one of the main devices of any planter, determining the quality of sowing, especially when it comes to the sowing unit of the central dosing. The article describes the proposed technological scheme of sowing of difficult seeds with a pin-disc type metering device. Its feature is the presence of an activator of seed outflow from the bunker. The proposed apparatus is capable of dispensing hard-to-sowing seeds with high quality, which include most of the seeds of cereal grasses (and not only). An original technique and a specially developed laboratory setup for assessing the longitudinal uniformity of seeding are described. The essence of the technique consists in sowing seeds on a moving horizontal platform with sectors of the same size. With its use, time and labor costs for conducting experiments are significantly reduced. The results of theoretical and experimental studies to determine the optimal design and operational parameters of the proposed device are given. Analysis of the results of the research is presented herewith.