Plant density impact on grain yield of maize (Zea mays L.) hybrids on chernozem soil of the Eastern Hungary

Authors

  • Péter Pepó Institute of Crop Science of Agricultural and Food Sciences of Environmental Management, Centre of Agricultural Sciences, University of Debrecen, 138. Böszörményi út, Debrecen H-4032, Hungary
  • Eszter Murányi Institute of Crop Science of Agricultural and Food Sciences of Environmental Management, Centre of Agricultural Sciences, University of Debrecen, 138. Böszörményi út, Debrecen H-4032, Hungary

DOI:

https://doi.org/10.18380/SZIE.COLUM.2014.1.2.95

Keywords:

maize, plant density, hybrids, grain yields

Abstract

The plant density response of 12 maize hybrids was tested in a favourable year (2013) under optimum agrotechnical conditions on chernozem soil by applying plant densities of 50, 70 and 90 thousand plants ha-1. Due to the favourable ecological and agrotechnical conditions yields varied between 11400 and 16300 kg ha-1 depending upon the hybrid and the plant density. From among the hybrids, 5 and 7 produced the maximum yield at 70 and 90 thousand plants ha-1, respectively however the yield increment was not significant between 70 thousand plants ha-1 and 90 thousand plants ha-1. No relationship was found between the season length and the optimum plant density of hybrids. Those hybrids were the most favourable, which gave a stable high yield at different plant densities that is their optimum plant density range was wide (P 9175, P 9494, SY Afinity). Hybrids with a small optimum plant density range (P 9578, DKC 4490, PR 37N01) gave the highest yield at a specific plant density (70 thousand plants ha-1 or 90 thousand plants ha-1). A special complex coordinate system was developed for evaluation for the plant density response of maize genotypes specific ecological and agrotechnical conditions can be evaluated jointly.

Author Biography

  • Péter Pepó, Institute of Crop Science of Agricultural and Food Sciences of Environmental Management, Centre of Agricultural Sciences, University of Debrecen, 138. Böszörményi út, Debrecen H-4032, Hungary

    pepopeter@agr.unideb.hu
    corresponding author

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Published

2014-11-25

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How to Cite

Plant density impact on grain yield of maize (Zea mays L.) hybrids on chernozem soil of the Eastern Hungary. (2014). COLUMELLA – Journal of Agricultural and Environmental Sciences, 1(2), 95-100. https://doi.org/10.18380/SZIE.COLUM.2014.1.2.95

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