GROWING MAIZE HYBRIDS IN ZONAL AGRICULTURE

new site

This site is no longer updated!
The new website of the magazine is located at https://visnyk.lnup.edu.ua/

 

Visnyk LNAU: Agronomy 2021 №25: 55-59

GROWING MAIZE HYBRIDS IN ZONAL AGRICULTURE

Bomba M., Doctor of Agricultural Sciences
ORCID ID: 0000-0001-7865-2111
Lviv Institute of Economics and Tourism
Bomba M., Candidate of Agricultural Sciences
ORCID ID: 0000-0001-7753-4885
Dudar I., Candidate of Agricultural Sciences
ORCID ID: 0000-0002-4467-9946
Lytvyn O., Candidate of Agricultural Sciences
ORCID ID: 0000-0003-3966-9222
Dudar O., Senior Lecturer
ORCID ID: 0000-0002-7065-6887
Lviv National Agrarian University

https://doi.org/10.31734/agronomy2021.01.055

Annotation

In the globalization conditions, the current practice confirms that the world production of grain is related with the constantly growing demand, caused by a fast growth of the world population. In the conditions of the energy crisis it is necessary to grow different kinds of cereals for biofuel production, along with the grain demand for food and fodder purposes.

Introduction of new highly-production hybrids of maize of the different groups of ripeness into production requires studying the issue of an optimal density of plant stand, providing not only favorable phytosanitary conditions of the crops, but also successful implementation of the hybrids potential productivity.

The issue of an optimal density of crops is still actual because of the significant warming and the consequent higher frequency of drought periods or unbalanced distribution of precipitation even in the conditions of the Western Forest-Steppe, which is traditionally considered a zone of sufficient humidity.

Different hybrids (even of the same group of ripeness) respond to a higher density in a different way, because their size, leaf position and duration of their photosynthesis activity are caused by the genetic capabilities. Under the impact of the various density of plant stand, morphological features and productivity of the maize crops are also changed.

Overcrowding of the middle-early hybrids from 70 to 80 thousand plants per 1 hectare contributed to an increase of the grain yield. However, increase of the stand density up to 85 thousand plants per 1 hectare resulted in insignificant (hybrid P 8816), or significant reduction of yield (hybrids P 8409 and DKC 3623).

The mid-season hybrids, but for DC 0336, demonstrated a positive response to the overcrowding up to 75 thousand plants per 1 hectare. The further overcrowding was inexpedient because it resulted in a significant yield reduction. The hybrid DC 0336 was the only exclusion. It showed a significant increase of yield in all variants of crop density and reached the level of 17.1 t/ ha under the density of 85 thousand plants per 1 hectare.

Key words

Western Forest-Steppe zone, maize, hybrids, crop density, grain yield

Full text

pdf

Link

  1. Bomba M., Dudar I., Tuchapskyi O., Hrynda Yu. Yield of maize hybrids depending on the nutrition area in the conditions of the Western Forest-Steppe. Bulletin of LNAU. Agronomy. 2017. № 21. P. 48–52.
  2. Bomba M. I. Maize: general peculiarities of the technology in the Western region. Agronomist. No. 4 (6). 2004. P. 40–42.
  3. Bomba M. I., Tuchapskyi O. R., Hrynda O. A. Yield of maize hybrids depending of the nutrition area in the conditions of the Western Forest–Steppe. Problems of agro-industrial complex of the Carpathian Mountains: Inter-department subject scientific collection. 2010. Iss. 19. P. 144–148.
  4. Density of maize crops. URL: https://tdnasinnya.com/ uk/statti/ kukurudza/158-gustota-posivu-kukurudzi (Last аccessed: 09.02.2021).
  5. Kalambet V. Impact of the structural indices on a corn yield. URL: https //superagronom.com/blog/254-vpliv-strukturnih-pokaznikiv-na-vrojaynist-kukurudzi (Last аccessed: 09.02.2021).
  6. Khromenko V. A. Impact of the density of maize plant stand on the grain yield. Agro digest. Corporative edition «APK «Maize» LLC. 2019. February. 2019. P. 5.
  7. Lohinova I. Secrets of a successful corn yield. Agronomy. 2019 (July). URL: https://infoindustria.com.ua/sekreti-kukurudzya-nogo-usipihu (Last accessed: 09.02.2021).
  8. Methodology of the state testing of agricultural crop varieties / еds by V. V. Volkodav. Kyiv, 2001. 65 p.
  9. Methodology of the scientific researches in agronomy: manual / V. H. Didora, O. F. Smahlii, E. R. Ermantraut et al. Kyiv: Center of educational literature, 2013. 264 p.
  10. Moldovan Zh. A., Sobchuk S. I. Impact of the terms of sowing, plant density and abiotic factors on formation of grain yield of the maize hybrids of different ripeness groups in the conditions of the Western Forest-Steppe. Bulletin of the Institute of Agriculture of the Steppe Zone of the NAAS of Ukraine. 2016. No. 1. 2016. P. 31–38.
  11. Mynkin M. V., Berdnikova O. H., Mynkina H. O. Formation of the productivity of maize for grain depending on fertilization and density of plant stand in the conditions of the South of Ukraine. Tavriia Scientific Bulletin. No. 106. URL: http://www.tnv-agro.ksauniv.ks.ua/ archives/106_2019/17.pdf (Last accessed: 09.02.2021).
  12. Petrychenko V. F., Lykhochvor V. V. Crop production. New technologies of field crops growing: manual. 5th edition. Lviv: EPC «Ukrainski tekhnolohii», 2020. 806 p.
  13. Principles of the scientific researches in agronomy: manual Ministry of Agrarian Policy of Ukraine; еds by V. O. Yeshchenko. Kyiv: Diia, 2005. 288 p.
  14. Rybka V., Liashenko N., Dudka M. Growing of maize in Ukraine. What is the prospect? URL: http://agro-business.com.ua/ agro/ahronomiia-sohodni/item/11994-vyroshchuvannia-kukurudzy-v-ukraini-yaka-perspektyva. html (Last accessed: 09.02.2021).
  15. Shynkaruk V. A., Kovalenko O. A., Romanenko V. M. Productivity of maize hybrids and cost of grain drying in the conditions of the central part of Vinnytsia region. Scientific works: Scientific and Methodic Journal / ChSU named after P. Mohyla. 2011. Vol. 150, Iss. 138: Ecology. P. 37–42.
титулка Агро