Biological nitrification inhibition (BNI) activity in sorghum: Potential role for enhancing nitrogen-use efficiency (NUE)

Subba Rao, G V and Nakahara, K and Ando, Y and Sahrawat, K L and Deshpande, S P and Srinivasa Rao, P and Upadhyaya, H D and Hash, C T (2015) Biological nitrification inhibition (BNI) activity in sorghum: Potential role for enhancing nitrogen-use efficiency (NUE). In: Millets : Promotion for Food, Feed, Fodder, Nutritional and Environment Security, Proceedings of Global Consultation on Millets Promotion for Health & Nutritional Security. Society for Millets Research, ICAR Indian Institute of Millets Research, Hyderabad, pp. 91-96. ISBN 8189335529

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Abstract

Nitrification and denitrification are the primary drivers for generating reactive -N (NO3-, N20 and NO) the two processes of N-cycle, largely responsible for soil-N losses, resulting poor N-recovery and low-NUE in agricultural systems. Suppressing soil nitrifier activity facilitates retention of soil mineral-N as ammoninum, leads to better utilization of N in situations where nitrification is followed by N losses via leaching and/or denitrification. Soils in the WCS (West Central Sahelian zone of Africa) where sorghum is predominantly grown, are of light-textured sandy-loams with acidic (ph 5.0 to 6.0). Alfisols in India and Ultisols in South America are also of light-textured and acidic, where most of the sorghum grown globally. Nitrogen mineralized from SOM (soil organic matter) or from inorganic fertilizers is quickly nutrified and lost through leaching.

Item Type: Book Section
Divisions: RP-Dryland Cereals
CRPS: CGIAR Research Program on Dryland Cereals
Uncontrolled Keywords: Sorghum; Biological Nitrification Inhibition; Nitrogen use efficiency; Ammonia
Subjects: Mandate crops > Sorghum
Depositing User: Mr Ramesh K
Date Deposited: 19 Jun 2015 06:14
Last Modified: 19 Jun 2015 06:23
URI: http://oar.icrisat.org/id/eprint/8788
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