Stability and plasticity of corn hybrids in depending on fertilizing system and density of plant stand in the Right-bank Forest-steppe of Ukraine

Authors

  • V. G. Taran National University of Life and Environmental Sciences of Ukraine image/svg+xml
  • S. M. Kalenska National University of Life and Environmental Sciences of Ukraine image/svg+xml
  • N. V. Novytska National University of Life and Environmental Sciences of Ukraine image/svg+xml
  • P. O. Daniliv National University of Life and Environmental Sciences of Ukraine image/svg+xml

DOI:

https://doi.org/10.31548/bio2018.03.019

Abstract

For the modern cultivation of stable corn grain yields, such biological properties of modern hybrids as plasticity and stability, characterize adaptive properties of the organism, reveal dynamics of changes in reaction of the genotype to variation of environmental conditions, allow to keep own functions relatively unchanged. The aim of research was to establish peculiarities of yielding maize hybrids of different regional selection, response of hybrids to sowing density, effectiveness of fertilizing norms and morphological changes in the plant. Field experiments were laid on typical chernozems of Right-bank Forest-steppe of Ukraine during 2015-2017. In village Zikrachi Kagarlitsky district of the Kiev region. As result of conducted studies, adaptive ability of eight hybrids of corn has been established with crowding of sowings and escalating rates of mineral fertilizers. Architectonics of root system has been studied and dependence of root system parameters of corn hybrids with different feeding conditions and density of plant standing has been established. Productivity during 2015-2017 is varying from 5.08 to 13.4 t / ha. During the years of research in conditions of the Right-bank Forest-Steppe of Ukraine, moisture supply was the main limiting factor of yield.

Keywords: adaptation, corn, root system, hybrids, productivity, fertilizing rates, plant stand density, right-bank Forest-Steppe of Ukraine

 

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Published

2018-08-14

Issue

Vol. 10 No. 3-4 (2018)

Section

Agronomy

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