Table 1. Effect of P supply on external P requirement (g external P to produce 1kg of DM) for safflower and sunflower. For a given species and a given soil type, means within each column followed by the same capital letter are not significantly different, means in the same soil type and the same P level and different plant species followed by the same small letter are not significantly different, * indicates significant difference for a given plant species and a given P level within soil types. P< 0.05, n=3

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Phosphorous Use Efficiency of Safflower and Sunflower Grown in Different Soils

Jehad Abbadi

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