The main problem of distribution systems with a centralized metering seed actions of pneumatic planters is deficient feed-rate consistency of seeds in supply coulters. Thus, the purpose of the study is to develop the optimal ways of decreasing the irregular distribution of the seeds and mineral fertilizers in the coulters. In order to achieve this goal, it is suggested to give the air-and-seed mixture a certain form of organized motion by installing inside the transport line in front of dividing attachment of helical spiral of an original construction. The authors observe that the pneumatic pipeline with distributor with equal turns gives the most qualitative distribution of the material. Moreover, offset value of turns, particle velocity in different sections of the transportation, which were used to calculate their design parameters were theoretically justified. The practical value is that the submissions can be used in current practice of increasing the production of horticulture.

Astahov, V.S. (1998). Sowing Machinery: Analysis and Prospects of Development. Tractors and Agricultural Machinery, 10, 7-9.

Beaujot, P.M. (2009). U.S. Patent No. 7,555,990. Washington, DC: U.S. Patent and Trademark Office.

Goottfried, E. (2000). Wie die Saat, so die Ernt. Profi-Magazin Fur Agrartechnik, 4, 44-49.

Ivzhenko, S.A. (1992). Mechanical and Technological Bases of Perfection of Pneumatic Seeding: Disseration. Doctor of Engineering Sciences. Chelyabinsk: Landtechnik, 506 p.

Ivzhenko, S.A. (2005). Theoretical Research of the Process Seeds Egress in the Air Intake Chamber of Sowing Apparatus. Actual Problems of Agricultural Science and Education: Collection of Research Papers. Samara: Infra-Engineering, 101-103.

Jianbo, Z., Junfang, X., Yong, Z., & Shun, Z. (2014). Design and Experimental Study of the Control System for Precision Seed-metering Device. International Journal of Agricultural and Biological Engineering, 7(3), 13.

Jin, H., Zhiqiang, Z., Hongwen, L., & Qingjie, W. (2014). Development of Small/Medium Size No-till and Minimum-till Seeders in Asia: A Review. International Journal of Agricultural and Biological Engineering, 7(4), 1.

Jinli, C., & Xiaohui, Z. (2011). Design and Test of One-step Centralized Type Pneumatic Seeding System. Transactions of the Chinese Society of Agricultural Engineering, 2011(1).

Johansen, C., Haque, M.E., Bell, R.W., Thierfelder, C., & Esdaile, R.J. (2012). Conservation Agriculture for Small Holder Rainfed Farming: Opportunities and Constraints of New Mechanized Seeding Systems. Field Crops Research, 132, 18-32.

Krjuchin, N.P. (2003). Sowing Machines. Design Features and Development Trends: a Monograph. Samara: RTS of Samara State Agricultural Academy, 117 p.

Ljubushko, N.I (2003). Development of Wide-сut Seeders on the Basis of the Autonomous Sowing Systems. Tractors and Agricultural Machinery, 11, 19-20.

Li, Y., Bingxin, Y., Tao, C., Yiming, Y., Xiantao, H., Quanwei, L., & Dongxing, Z. (2016). Global Overview of Research Progress and Development of Precision Maize Planters. International Journal of Agricultural and Biological Engineering, 9(1), 9.

Manasseri, R.C.C., & Poggio, C.A.R. (2014). U.S. Patent No. 8,789,481. Washington, DC: U.S. Patent and Trademark Office.

Memory, R.J., Benneweis, R.K., Klassen, N.D., Wilson, R.J., & Wilson, J.N. (2001). U.S. Patent No. 6,296,425. Washington, DC: U.S. Patent and Trademark Office.

Never Pin – disk air drill: brochure MORRIS, 20 p. Canada.

Ornek, F. (2008). Models in Science Education: Applications of Models in Learning and Teaching Science. International Journal of Environmental and Science Education, 3(2), 35-45.

Pandey, S. (2002). Direct Seeding: Research Strategies and Opportunities. International Rice Research Institute, 384 p.

Rumshinskij, L.Z. (1971). Mathematical Processing of the Experimental Results. Moscow: Science, 192 p.

Séguy, L., & Bouzinac, S. (2003). Direct Seeding on Plant Cover: Sustainable Cultivation of Our Planet’s Soils. In Conservation Agriculture, 93-99. Springer Netherlands.

Singh, R.C., Singh, G., & Saraswat, D.C. (2005). Optimisation of Design and Operational Parameters of a Pneumatic Seed Metering Device for Planting Cottonseeds. Biosystems Engineering, 92(4), 429-438.

Test Reports for Celinnaja MIS the Canadian drills «Moris-620" (MIS protocol № 30-72-85) and «Fiexi-Coil» drills (Celinnaja MIS report № 30-76-90).

Test Run of the Universal Drill Seeder Pronto 3 DC Horsch. Tractors and Agricultural Machinery. Profi – 2005. – Special Issue of “Profi” Magazine, 70-73p.

Yasir, S.H., Liao, Q., Yu, J., & He, D. (2012). Design and Test of a Pneumatic Precision Metering Device for Wheat. Agricultural Engineering International: CIGR Journal, 14(1), 16-25.

Zhang, D.H., & Wu, X.Q. (2015). The Design of Seeding Machine Based on the Motion Controller. In Applied Mechanics and Materials, 713, 845-848. Trans Tech Publications.