Seed distribution by the coulter for the subsoil broadcast seeding

Abstract

The article studies the efficiency of the subsoil broadcast seeding of grain crops, which differs from other methods with the way seeds are placed into the soil: not in rows but on the whole distributing width. This method is also determined by the evenness of seeding depth by placing the seeds on the ready hard spot, which provides equal conditions of heat, light, water, food and gas supply that influence seed sprouting, seedling formation, tillering, shooting, head formation, earing, blossoming, kernel milk line formation, middle dough and fully ripe stage development. The analysis of coulter with active and passive distributors has been conducted. The use of air flow during the transportation of seeds from the sowing device to the coulter and the distributor oscillating process is recommended for the higher quality seed distribution below the spinning wheel. The oscillations of the elastic tube – distributor under the influence of the air-grain mixture have been theoretically studied. The obtained results allow creating dependency diagrams of oscillation frequency ω and damping parameter h. The experimental research has been made to study the evenness of seed distribution with the help of the coulter with the elastic tube – distributor.

Investigation of the pin-roller metering device and tube effect for wheat seeds and granular fertilizers based on DEM

“…The particle shape and tube conditions (new or worn) or the tube inclination and length affects the particle discharge [49][50][51] . This can lead to gaps in the particle row or blockage of the feed tube [52][53][54] . As long as a new pin-roller metering device is designed, it is imperative to investigate the final distribution of granular fertilizers and wheat seeds influenced by tubes into the soil.…”

Study of the tractive resistance of the no-till planting section

“…These are generally combined sowing sections simultaneously performing several heterogeneous operations: cutting the upper compacted soil layer, furrowing, laying the seed into the soil, and seeding down [4,5]. Taking into account the substantial variety of physical and mechanical properties of soil, the condition of the agricultural background, and the planned seeding depth necessary for the above operations, various sowing sections significantly differ from each other in design [6][7][8][9][10].…”