Soil fertility status as affected by different fertilzer levels and 5 crop rotations under rainfed conditions at North Sinai [electronic resource].

Includes references.

Under rainfed conditions in North Sinai, 2 locations namely El-Barth (sandy loam to loamy soil) and Rafah (sandy soil) were selected for a long term trial with 4 fertilizer treatments: control, NP, organic manure, and (NP+organic manure) and 5 crop rotations: (Barley/ fallow) (I) Wheat/Wheat (II) Barley/Barley (III), Barley/Peas (IV) and Barley/Lentil (V). The experiment was carried out at both locations. Soil samples were collected before planting as well as after 2 years of crop rotation to determine the concentration of N, P, K, and organic matter content, as well as Zn, Fe, Mn, and Cu in the soil and to evaluate the effect of the fertilizer treatments under the above mentioned crop rotations. Results obtained show the following: At El-Barth location (Low rainfall): The building up of the nitrogen, phosphorus and manganese content was improved under the different crop rotations, while the content of potassium and iron were not affected. Zinc and copper soil contents were decreased, especially under monocropping barley rotation.

Summary in Arabic.

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