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[9001072.] رقم البحث : 9001072 - |
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Influence of Phosphorus Application on the Initial Growth and Leaf Nutrient Contents of Some Leguminous Tree Species / |
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قطاع الدراسات الزراعية / General |
| تخصص البحث : General |
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Assiut Journal of Agricultural Sciences / |
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يوسف خيرى انور ( 01226313930 ) - مؤلف رئيسي |
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phosphorus fertilization, leguminous trees, tree growth, seedlings. |
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Phosphorus applications (0.6, 1.2 and 1.8 gm/kg soil) were applied to six leguminous tree species; Acacia laeta, Acacia abida, Acacia nilotica, Acacia far-nesiana, Tamarindus indica and Haematoxylum campechianum to define the suitable P rate for favorable growth. The heaviest roots in average of both seasons; fresh and dry were obtained from T. indica. The thickest and heaviest shoot were resulted from A. laeta. The longest roots recorded by A. nilotica and A. farnesiana. The maximum N and P contents were obtained by T. indica. The other species achieved intermediate levels of N and P. In relation to P applica-tion, a rate of 1.2 gm/kg of phosphorus was the best for shoot diameter and root length, meanwhile, 1.8 gm/kg increased fresh and dry weight of both shoots and roots. Leaf content of N was increased with increasing P from 0.6 to 1.8 gm/kg. Phosphorus addition at 1.2 gm/kg was more effective in accumulation of P con-centration. |
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