Short-term incubation method for mineralizable nitrogen

Sahrawat, K L (1998) Short-term incubation method for mineralizable nitrogen. Arid Soil Research and Rehabilitation, 12 (3). pp. 291-295. ISSN 0890-3069

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Soil N supply plays an important role in the N nutrition of cereal crops under dryland agriculture conditions in the semiarid tropics, where the use of chemical fertilizers is low. Mineralizable N was determined in the profiles of a benchmark Vertisol and Alfisol in the semiarid zone of India using three versions of a water‐logged incubation method: incubation at 30°Cfor 14 days, at 40°C for 7 days, and at 50°C for 2 days. Mineralized N decreased with depth in the profile and increased with increase in temperature from 30° to 50°C. The mineral N released in the soils at 40°C in 7 days and at 50°C in 2 days were significantly correlated with the mineral N released in 14 days at 30°C. The results indicate that short‐term water‐logged incubation test using incubation for 2 days at 50°C may be employed for assessing the potentially mineralizable N in these soils.

Item Type: Article
Uncontrolled Keywords: Alfisol, N mineralization, semiarid, temperature coefficient, Vertisol, waterlogged incubation
Subjects: Others > Soil Science
Depositing User: Library ICRISAT
Date Deposited: 11 Dec 2011 05:55
Last Modified: 11 Dec 2011 05:55
Official URL:
Acknowledgement: UNSPECIFIED
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