Article abstract

Journal of Agricultural and Crop Research

Research Article | Published July 2017 | Volume 5, Issue 2, pp. 17-24


The response of two naked barley varieties (Hordeum vulgare L.) to four phosphorus fertilizer levels




Amani Ben Naceur1

Hatem Cheikh-M’hamed2

Jaime A. Teixeira da Silva3

Chedly Abdelly4

M’barek Ben Naceur5*


Email Author

 Tel: +216 98 901 641.



1.     Faculty of Sciences, El-Manar University, Tunis, Tunisia.

2.    Department of Agronomy, National Agronomic Research Institute of Tunisia, Ariana-Tunisia.

3.    P. O. Box 7, Miki-cho post office, Ikenobe 3011-2, Kagawa-ken, 761-0799, Japan.

4.      Borj Cedria Center of Biotechnology, Tunisia.

5.    National Gene Bank of Tunisia, Boulevard Leader Yasser Arafat 1080, Cherguia 1, Tunis, Tunisia.


Citation: Naceur AB, Cheikh-M’hamed H, Da Silva JAT, Abdelly C, Naceur MB (2017). The response of two naked barley varieties (Hordeum vulgare L.) to four phosphorus fertilizer levels. J. Agric. Crop Res. 5(2): 17-24.



The objective of this study was to determine the effect of phosphate fertilization on the biological and grain yield and to identify the optimum dose generating the best performance of these two varieties, which had extraordinary β-glucan content in previous study. Four rates of P (0, 50, 100, 150 and 200 kg of P2O5/ha) were applied at sowing date and two trials were carried out: the first was done in pots to exhibit the effect of (P) on plantlet root growth while the second was conducted in the field in a completely random design with three replications. In the last case, all elementary plots were fertilized with 25 kg/ha of ammonium nitrate at the elongation stage. The gradual increase in P-fertilization positively affects root growth of the first trial. It affects also biological and grain product of both varieties in the second trial in the field, up to 100 kg/ha. However, both varieties exhibited contrasting behaviour. The first variety «Tombari» showed a significant increase in the number of grains/spike and spike weight; while the second one «Giza 130» produced significantly more fertile tillers/m2 and more grain/spike according to P-fertilizer increase. Therefore, phosphate fertilization contributes to barley growth and yield up until 100kg/ha in a genotype-independent manner, which responded in different way. Beyond this dose, «Tombari» reacted negatively to the phosphate increase, while «Giza 130» exhibited an unaffected behaviour.

Keywords  Barley   fertilizer   naked   phosphorus   yield components  






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