Effect of cultivar and nitrogen fertilisation on grain and protein yield in sorghum
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Date
2023
Authors
Journal Title
Journal ISSN
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Publisher
Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy w Puławach
Abstract
Description
Sorghum is a cereal crop of major importance in global
production. It is grown in hot and dry regions of the world. In
Poland, this species has so far not been cultivated for grain due
to unfavourable climatic conditions. Currently, climate warming
and the extension of the growing season provide an opportunity
to introduce sorghum into grain cultivation. Three grain sorghum
cultivars Albanus, Anggy, GK Emese were used in the ongoing
microplot trials and three different nitrogen rates were applied:
80, 100 and 120 kg ha-1. The research was conducted over two
growing seasons. The aim of the study was to determine the effect
of cultivar and level of nitrogen fertilisation on the yield, yield
structure and grain protein content of sorghum. A differentiated
response of cultivars to nitrogen fertilisation was shown. Alba-
nus and Anggy cultivars have similar yield potential and reaction
to nitrogen fertilisation, and the optimum nitrogen dose for the
cultivars is 100 kg of nitrogen per hectare, and an increased dose
does not significantly increase the yield. Regardless of the level
of nitrogen fertilization, the GK Emese variety always showed
a higher protein yield compared to the other tested sorghum vari-
eties. The cultivar GK Emese showed the highest yield potential.
In 2020 it exhibited the highest increase in grain and protein yield
along to increase of nitrogen fertilisation.
Keywords
sorghum grain, sorghum cultivar, nitrogen fertilisation, protein yield
Citation
Polish Journal of Agronomy
2023, 52, 71–78