Interactive effect of Potassium and Phosphorus on some properties of barley plants growth(Hordeum Vulgare L.;)

	Interactive effect of Potassium and Phosphorus on some properties of barley plants growth(Hordeum Vulgare L.;)
Euphrates Journal of Agriculture Science
Article 1, Volume 6, Issue 1, 2014, Pages 126-134
Abstract
Abstract : To stady the interactive effect of potassium concentrations (0,10,20, and 30)mg k.kg-1 of soil as potassium sulfate( k2o 50%) and phosphorus at concentrations (0,5,10,20,40 and 80)mg p kg-1soil as triple super phosphate( p2o5 46%) on growth some properties of barley plants growth. Plastic pots experiment was conducted at Dept of soil science – college of Agriculture –Babylon university . 10 kg of soil per pot were put , 10 seed per pot of barley (IPA 99) were sown on 11 november 2012 . Concentrations of potassium and phosphorus Fertilizers were added , 80 mgN kg-1of soil as urea N 46% were added to all treatments Randomized Plants were thinned to 6 plants per pot after germination . Plants height were mesured after 82 days of germination , then they cut .oven dry weight of shoot , oven dry weight of roots and biological yield were determination . Results were showed that: Potassium concentrations were significantly effect in increasement of all above properties , K30 superior at values of (57.2cm , 26.26 gm, 16.05gm and 42.31 gm. Per pot . Phosphorus concentrations were significantly effect in increasement of all above properties ,P80 superior at values of (56.66cm , 25.09 gm , 13.83gm and 38.81gm per pot . *The interaction between concentrations of potassium and phosphorus increased all above properties significantly , the treatment P80K30 was superior on all treatments at values of (59.45cm ,32.30gm ,20.32gm and 52.62 gm per pot .

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