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Pakistan Journal of Nutrition

Year: 2013  |  Volume: 12  |  Issue: 12  |  Page No.: 1070 - 1074

Effect of Different Phosphorous Levels on Growth,Yield and Quality of Spring Planted Sunflower

Ghazanfar Ullah Sadozai, Muhammad Farhad, Muhammad Ayyaz Khan, Ejaz Ahmad Khan, Muhammad Niamatullah, Muhammad Safdar Baloch, Abdul Aziz Khakwani and Kashif Wasim


The experiment was conducted to study the effect of various phosphorous levels on the yield and yield components of sunflower variety “Hysun-33” at the Agronomic Research Area, Faculty of Agriculture, Gomal University, Dera Ismail Khan during the year 2010. The phosphorous levels studied were 0 (N :P2O5: K2O), 0 (P2O5), 10, 20, 30, 40, 50, 60 P2O5 Kg/ha. The results showed significant effect of P2O5 @ 50 kg/ha and 60 kg/ha as compare to lower doses of phosphorous. All varying levels of phosphorous affected the head diameter, number of seeds per head, 1000-seeds weight, achene’s yield and achene’s oil content but significant positive effect was observed where P2O5 @ 60 kg/ha N @ 50 kg/ha and K2O 15 kg/ha was applied. However, number of plants, remained non-significant. It is, therefore, recommended to apply phosphorous @ 60 kg/ha for obtaining higher yield of sunflower.

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