The influence of foliar "feeding" of urea on yield and its components of Iranian hybrid rice Oryza sativa L. ‘Bahar 1’


  • Hamid Dorosti Rice Research Institute of Iran (RRII), P.O. Box 1658, Rasht, Iran
  • Katarzyna Możdżeń Institute of Biology, Pedagogical University of Krakow, Podchorążych 2, 30-084 Kraków, Poland
  • Peiman Zandi Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Science, Beijing 100081, P. R. China
  • Morteza Siavoshi Department of Agricultural Sciences, Payame Noor University, I.R. of Iran



Oryza sativa L., Bahar 1, foliar spraying, urea fertilisation, grain yield


Because of waterlogged conditions in rice cultivation, much of the surface-broadcasted urea dissolves in paddy water and is unreachable to the rice crop for this reason. A field experiment was conducted to estimate the influence of urea fertilisation on yield and yield components of hybrid rice ‘Bahar 1’. Three doses (N0, N10, N20 kg N ha-1) of nitrogen from urea sources were foliar-sprayed once at active tillering and booting stages. Grain yield, the number of panicles per unit area, and the number of grains per panicle in the tillering stage of rice were significantly (p < 0.01) increased in a linear fashion when N rates increased from 0 to 20 kg ha-1. The rate of panicle fertility was negatively/positively influenced with increasing N rates in the tillering and booting stages, respectively, indicating the creation of more number of non/partial productive tillers per hill in the vegetative stage than in the reproductive stage. In line with panicle fertility (%), the grain yield was also significantly affected by N treatments with urea fertilisation in the booting stage. Maximum grain yield was obtained with the application of 20 kg N ha-1 at both the tillering and booting stages. Foliar spraying of urea at tillering (20 kg N ha-1) and booting (10 kg N ha-1) stages had a pronounced effect on achieving higher yields as compared to other combinations. The study suggests that foliar application of urea for hybrid rice cultivation might have a potential role in improving nitrogen use efficiency.


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How to Cite

Dorosti, H., Możdżeń , K., Zandi, P., & Siavoshi , M. (2017). The influence of foliar "feeding" of urea on yield and its components of Iranian hybrid rice Oryza sativa L. ‘Bahar 1’. Annales Universitatis Paedagogicae Cracoviensis Studia Naturae, 2(1), 81–96.



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