Climate resilient agriculture in rainfed areas

Reddy, K Sammi; Prabhakar, M.; Rao, K. V.; Prasad, J. V. N. S.

doi:10.5958/2395-146x.2020.00020.4

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“…During the last 10 years, one or other parts of India suffered from weather aberrations such as prolonged dry spells/droughts/floods/excessive rainfall etc. [22].…”

Section: Nue and Snmi In Different States Of India During The Last 10...mentioning

confidence: 99%

Nitrogen Management Strategies for Enhancing its use Efficiency and Environmental Performance of Indian Agriculture

Reddy

2023

IJESNR

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Although, the food grain production showed remarkable increase with increase in fertilizer N use over the time, the average global N use efficiency (NUE) is quite low (0.460). Thus, the rest of the N input (54%) into cropland contributes towards environmental air and water pollution. Over the 60% of N pollution is estimated to originate from crop production. United General Assembly has proposed the NUE as an indicator for assessing the progress made in achieving Sustainable Development Goals. Sustainable N Management Index (SNMI) approach can be used to assess the environmental performance of agriculture at country and global level. Global NUE should be raised to 0.70 by 2050 while achieving the crop production targets to reduce the N waste to desired level. India is the 3rd largest fertilizer consumer after USA and China. It is necessary to increase the average NUE of Indian agriculture to 0.70 to achieve the global NUE target by 2050. Therefore, the current status of NUE and SNMI was assessed at country level as well as in different states of India during the last 10 years (2010-11 to 2019-20) in the present study to identify crop production constraints of low NUE and to suggest crop-specific and state-specific N management strategies. The mean NUE at country level was very low which varied from 0.451 in 2015-16 to 0.527 in 2017-18. The low NUE resulted in huge N surplus (Nsur) which actually contributes to environmental pollution varied from 13.45Tg in 2017-18 to 15.8Tg in 2015-16. The lower NUE and higher Nsur led to the relatively higher SNMI during the last 10 years which is directly proportional to the environmental pollution. Mean NUE of the last 10 years of 32 states and union territories showed the highest NUE of 0.878 in Nagaland and the lowest in Puducherry (0.196). The NUE and environmental performance of Indian agriculture increases at international level only when the environmental performance of agriculture and NUE of different states and UTs would improve. The 32 states and UTs under assessment were divided into 5 groups based on the NUE and fixed the target increase in NUE by 2050 for each group to achieve overall NUE of 0.70 at country level. In each group the major constraints responsible for low NUE were identified and suggested the measures to improve NUE to target level.

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“…During the last 10 years, one or other parts of India suffered from weather aberrations such as prolonged dry spells/droughts/floods/excessive rainfall etc. [22].…”

Section: Nue and Snmi In Different States Of India During The Last 10...mentioning

confidence: 99%

Nitrogen Management Strategies for Enhancing its use Efficiency and Environmental Performance of Indian Agriculture

Reddy

2023

IJESNR

View full text Add to dashboard Cite

show abstract

Climate resilient agriculture in rainfed areas

Cited by 1 publication

References 0 publications

Nitrogen Management Strategies for Enhancing its use Efficiency and Environmental Performance of Indian Agriculture

Nitrogen Management Strategies for Enhancing its use Efficiency and Environmental Performance of Indian Agriculture

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