The effective role of some soil amendments and nitrogen sources for retarding the impact of lead and cadmium on wheat [electronic resource].

Includes references.

A pot experiment was performed under greenhouse conditions to study the efficiency of nitrogen fertilizers in contaminated soils, under the effect of some inorganic amendments (gypsum and rock phosphate) and organic amendments (compost) and their interaction at the Farm of Soil, Water and Environment Research Institute, Agricultural Research Center, Mansoura, Dakahlia Governorate, Egypt during winter season (2010-2011) using wheat plants (Triticum aestivum L.) cultivar Sakha 93. Plastic pots having 35cm diameter and 50cm height were filled with 10 kg soil. Before filling the pots, the treatments of soil amendments were mixed thoroughly with the investigation soil before sqwing. Gypsum was added at rate of 4 t fad- 1., compost was added at rate of 4 t fad- 1 and rock phosphate at rate of 400 kg fad- 1. Lead treatments were also added before sowing at rate of 200 mg kg- 1 soil as PbS04 (solid) and cadmium treatments were added at rate of 25 mg ki1 soil as CdS04 (liquid) after two weeks form sowing. Treatments of nitrogen forms were added at rate of 100 mg N kg- 1 soil as ammonium nitrate (33.5%), ammonium nitrate + nitrification inhibitor (thiourea) and bentonite coated urea (37% N).

Summary in Arabic.

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