The barley seed material in the farms of the Republic of Buryatia is of a poor quality. This is due to the presence of wheat and oats seeds. Seeds of barley and wheat have a non-significant overlap in terms of their length and wheat caryopses can be easily separated from the seeds material as short impurities in the cell separator with the 8.0–8.5 mm size of cells. The analysis of variation curves of barley and oats seeds according to the thickness and length shows that small oats caryopses overlapping the main crop culture according to the length, can be separated from the processed material on an undersowing sieve; the rest large oats caryopses are parted in the cell separator as long impurities. Nowadays, there is a lack of knowledge to study the technological process of the seeds cleaning according to a size set. The article deals with the comparative analysis of main sizes of barley, wheat, oats seeds that are under the research. Also, it defines the theoretic dependency to identify levels of quality of the seeds cleaning, seed yield, the rate of cleaned seeds and the presence of impurities in the cleaned seed material. The article provides methodic ideas to study the technological process of seeds cleaning developed by the authors of the article as well as justification of an approach of the seeds cleaning from a hard-separable impurity (oats) according to the set of sizes. A numerical scheme of the technological process of barley seeds cleaning from hard-separable impurities (oats) was developed. The technology of barley seeds cleaning from oats was developed including the seeds processing in the aspiration channel, on the undersowing sieve with parting of small oats seeds in the cell separator with the cells size of 11,2 mm.

Abiduev Andrey A., Pekhutov Aleksandr S., Baldanov Munko B., Togmidon Albert Yu.

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