Effect of Phosphorus Fertilization on Dry matter Accumulation and it's Remobilization in Oil seed Flax (Linum usitatissimum L.) under rainfed condition


  • Shiren Jalal Mohamed Crop Science Department, College of Agricultural Sciences, University of Sulaimani, Kurdistan Region, Iraq. Author
  • Shilan Mahmood Ahmed Crop Science Department, College of Agricultural Sciences, University of Sulaimani, Kurdistan Region, Iraq. Author
  • Solaf Adnan Mahmood Crop Science Department, College of Agricultural Sciences, University of Sulaimani, Kurdistan Region, Iraq. Author




Flax variety, Phosphorus fertilizer, Dry matter accumulation, P remobilization


This experiment was carried at Qlyasan Research Station. Faculty of Agricultural Sciences,  University of Sulaimani, during 2016-2017   to study the effect of four levels of phosphorus fertilizer in the form of P2O5 (0 control, 100, 200 and 300 kg P2O5ha-1) on two oilseed flax varieties (Poland and Syria local) dry matter and Phosphor  accumulation  and their  translocation from source to sink  . Results showed that Poland variety with the 200kg P2o5 ha-1 in all studied parameters significantly being higher than Syria local, and other levels of P2O5 fertilizer. Compared to control 200kg P2O5 increased DM  accumulation at 50%  anthesis by (44.48 and 27.04%), DM translocation efficiency by (24.46and 38.19 %), Contribution of leaves DM to final grain by (53.57 and 44.060%), P accumulation in vegetative tissues at 50% anthesis  by (69.59 and 81.65 %), P translocation efficiency by (51.85 and 70.02%), leaf P contribution to final grain by (50.69 and 73.63%), also at maturity increased  biological yield by (27.16 and 29.72%),  and increased  grain yield by (20 and 27%) for Poland and Syria local respectively, with no significant increment above that level. In both varieties at 50% anthesis the leaves DM were increased and reached peak at 200kg P2O5ha-1 but as the plant reached maturity the leaves DM significantly lower by ten times than stem DM+NG. These results suggest that 1.The leaves in oil seed flax are the major DM and P contributor to grain after anthesis whereas the stem and NG are the stronger demand for DM and P post anthesis.2. Variety of Poland under the 200kgP2O5 ha-1 could be suitable for grain yield under rainfed condition in Sulaimani province.


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How to Cite

Effect of Phosphorus Fertilization on Dry matter Accumulation and it’s Remobilization in Oil seed Flax (Linum usitatissimum L.) under rainfed condition. (2019). Journal of Zankoy Sulaimani - Part A, 21(1), 29-36. https://doi.org/10.17656/jzs.10742

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