Effect of simulated reclamation treatments on chemical properties and nitrogen mineralising characteristics of saline and alkali soils from West Pakistan

✍ Scribed by M. A. Sindhu; A. H. Cornfield

• Publisher: John Wiley and Sons
• Year: 1967
• Tongue: English
• Weight: 305 KB
• Volume: 18
• Category: Article
• ISSN: 0022-5142
• DOI: 10.1002/jsfa.2740181104

✦ Synopsis

Nitrogen mineralisation and nitrification during incubation of alkali, saline-alkaIi, highly saline and moderately saline soils were studied in the laboratory before and after simulated reclamation treatment, in which water plus calcium sulphate were used for the two alkali soils and water alone for the two saline soils. The reclamation processes reduced exchangeable sodium and soluble salts to low levels. Mineral nitrogen accumulation during incubation of original and 'reclaimed' soils was accounted for entirely as nitrate. The 'reclaimed' soils showed a lag phase in mineral nitrogen accumulation. The moderately saline soil was the only one to show increased mineralisable nitrogen, whilst the alkali and saline-alkali soils, in particular, and the highly saline soil showed reduced mineralisable nitrogen after 'reclamation'.