University of Khartoum

Effects of Acacia senegal (L., Wild) on Sandy Soils and Assessment of Its Folia e Nutrient Content: Case Study of Damokeya Forest, Northern Kordofan State

Effects of Acacia senegal (L., Wild) on Sandy Soils and Assessment of Its Folia e Nutrient Content: Case Study of Damokeya Forest, Northern Kordofan State

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Title: Effects of Acacia senegal (L., Wild) on Sandy Soils and Assessment of Its Folia e Nutrient Content: Case Study of Damokeya Forest, Northern Kordofan State
Author: Amira Musa Muhamed, Nimer
Abstract: Soil properties and plant parameters (foliage nutrient content) were studied in EI Damokeya forest, located at 30 km east of Elobeid town, Northern Kordofan State, during the growing season of 1998. . The aim was to characterize the soils of the area, to examine the effects of A cacia senegal plantations on the soil physical and chemical properties and to explore the nutrient status of this tree species and relationship with soil potentials. The results showed that, the soils were sandy, weakly structured, yellowish red in color, neutral and poor in nutrient content (N P K Ca Mg...etc). Acacia senegal plantations have induced considerable changes in the soil. morphological, physical and chemical properties: The soil became more differentiated, with a third layer clearly discernible. No change had occurred in the soil texture. But, it became well structured with stable aggregates. Its organic matter content has been augmented to about one and a half times, deeply incorporated and stained the whole profile with darker hues. The soil reaction became slightly acidic (pH 6.3). The exchange capacity was improved quantitatively and qualitatively under Acacia senegal plantations. Thus, CEC values have increased, from 2.8 meq in the bare land to 4.0 meq/l00g soil, under the forest and the soil is saturated to 98% with base cations. The major nutrient elements (N P K Ca Mg Fe) have generally increased with various proportions ranging from 10% to more than 130%, but only Ca showed significant difference at 95% level. Among the trace elements, Cu and Co have significantly decreased in the forest soil but Zn and Mn have increased to about 100%. Development of the mineral elements concentrations in the Acacia senegal leaves showed no distinct opposing temporal variation trends: Ca, Mg, Cu, Mn and Cl have accumulated ,with foliage senescence, while N, P, K, Zn have declined. No clear definite pattern ,was found between mineral element potentials in the soil and their concentrations in the Acacia senegal leaves: Ca, Mg, Zn, P, Cl had showed a direct proportional relationship; K, Cu, Mn, Co showed an inverse relationship; and N, Fe showed a constant relationship.
URI: http://khartoumspace.uofk.edu/handle/123456789/14501
Date: 2015-06-23


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