Title: The influence of seed sowing norms rate and row spacing on the yield of sorghum grain grown at eastern forest-steppe of Ukraine

Authors: Arthur Rozhkov; Touitou Mohammed; Lesia Karpuk; Lyudmila Sviridova; Mykola Shevchenko; Eugeniy Ogurtsov; Tetyana Romanova; Olexander Bragin; Gennadiy Kutsegub

Addresses: Faculty of Agriculture, Kharkiv National Agrarian University named by V.V. Dokuchaev, Dokuchaevske-2, 64283, Kharkiv Region, Kharkiv District, Ukraine ' Faculty of Economics and Business, University of Algiers 3, Road Ahmed Oueked, Dely Brahim, Algiers, Algeria ' Faculty of Agrobiotechnology, Bila Tserkva national Agrarian University, Soborna Square 8/1, Bila Tserkva, Kyiv Region, Ukraine ' Faculty of Agriculture, Kharkiv National Agrarian University named by V.V. Dokuchaev, Dokuchaevske-2, 64283, Kharkiv Region, Kharkiv District, Ukraine ' Faculty of Agriculture, Kharkiv National Agrarian University named by V.V. Dokuchaev, Dokuchaevske-2, 64283, Kharkiv Region, Kharkiv District, Ukraine ' Faculty of Agriculture, Kharkiv National Agrarian University named by V.V. Dokuchaev, Dokuchaevske-2, 64283, Kharkiv Region, Kharkiv District, Ukraine ' Faculty of Agriculture, Kharkiv National Agrarian University named by V.V. Dokuchaev, Dokuchaevske-2, 64283, Kharkiv Region, Kharkiv District, Ukraine ' Faculty of Agriculture, Kharkiv National Agrarian University named by V.V. Dokuchaev, Dokuchaevske-2, 64283, Kharkiv Region, Kharkiv District, Ukraine ' Faculty of Agriculture, Kharkiv National Agrarian University named by V.V. Dokuchaev, Dokuchaevske-2, 64283, Kharkiv Region, Kharkiv District, Ukraine

Abstract: In fact, there are no data on the effect of different combinations of plant density and the shape of their nutrition zone on the level of grain productivity of various stem systems (main and lateral rods of different orders) and their contribution to the total production of the plant yield capacity. This is precisely why our research was aimed to identifying the optimal combinations of sowing rates with sowing practices, which would allow for the development of the largest sorghum hybrid grain production capacity and determine the effect of different systems of stems on the formation of the highest cereal productivity of grain sorghum hybrids. The aim of research was to determine the connection between the components of growing technology (seeding rates and ways of sowing) that reflect the level of coenotic stress in plant crops.

Keywords: productivity; area of nutrition; interaction; density of plants; stage of development; range criterion.

DOI: 10.1504/IJPTI.2020.110444

International Journal of Postharvest Technology and Innovation, 2020 Vol.7 No.3, pp.237 - 255

Received: 19 Jun 2020
Accepted: 04 Jul 2020
Published online: 19 Oct 2020 *

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