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Chakraborty, D.

Spatial Variability in Temporal Trends of Precipitation and its Impact on the Agricultural Scenario of Mizoram

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Authors

S. Saha ¹, D. Chakraborty ², B. U. Choudhury ², S. B. Singh ¹, N. Chinza ³, C. Lalzarliana ⁴, S. K. Dutta ¹, S. Chowdhury ¹, T. Boopathi ¹, Lungmuana ¹, A. R. Singh ¹, S. V. Ngachan ²

Affiliations
1 ICAR Research Complex for NEH Region, Mizoram Centre, Kolasib 796 081, IN
2 ICAR Research Complex for NEH Region, Umiam 796 103, IN
3 Directorate of Economics and Statistics, and Government of Mizoram, 796 001, IN
4 Directorate of Crop Husbandry, Government of Mizoram, 796 001, IN

Source

Current Science, Vol 109, No 12 (2015), Pagination: 2278-2282

Abstract

Long-term monthly rainfall observations (1986-2014) were analysed for 12 rain-gauge stations installed at variable altitudes of Mizoram. Our objective was to assess the temporal change in the standardized precipitation index (SPI) values at different timescales using Mann-Kendall trend tests. Significant reductions in post-monsoon and winter rainfall were recorded for most of the sites. Increasing dryness during the winter months may intensify the acute water shortage in Mizoram. Our results emphasize the altitudinal insensitivity of mean monthly rainfall trend and prove the urgent need for adopting suitable water management practices to cope with the water scarcity problem to increase the resiliency of rabi agriculture in Mizoram in near future.

Keywords

Agriculture, Rainfall Pattern, Standardized Precipitation Index, Spatial Variability.

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References

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Saikia, U. S. et al., Shift in monsoon rainfall pattern in the North Eastern region of India post 1991. J. Agrometeorol., 2013, 15(2), 162–164.

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Naresh Kumar, M., Murthy, C. S., Sesha Sai, M. V. R. and Roy, P. S., On the use of Standardized Precipitation Index (SPI) for drought intensity assessment. Meteorol. Appl., 2009, 16, 381–389.

Jha, S., Sehgal, V. K., Raghava, R. M. and Sinha, M., Trend of standardized precipitation index during Indian summer monsoon season in agroclimatic zones of India. Earth Syst. Dyn. Discuss., 2013, 4, 429–449.

Role of Earthworm in Improving Soil Structure and Functioning

Abstract Views :370 | PDF Views:83

Authors

D. K. Sharma ¹, S. Tomar ¹, D. Chakraborty ²

Affiliations
1 Centre for Environment Science and Climate Resilient Agriculture, ICAR-Indian Agricultural Research Institute, New Delhi-110 012, IN
2 Division of Agricultural Physics, ICAR-Indian Agricultural Research Institute, New Delhi-110 012, IN

Source

Current Science, Vol 113, No 06 (2017), Pagination: 1064-1071

Abstract

Earthworms commonly occur within the soil. They alter physico-chemical and biological regimes of the soil through their activities, such as burrowing, casting, feeding and propagating, and therefore are known as 'ecosystem engineers'. Through their activities, they provide a number of ecosystem services which are ecologically and socio-economically important. This article reviews the role of earthworms in improving soil structural and functional properties, which serves as key determinants of soil ecosystem services and economic benefits for the farmers. A methodology of economic evaluation of the agro-ecosystem services provided by earthworms has been demonstrated. Further, the information gaps and future research have been discussed for ensuring sustainable agroecosystems management.

Keywords

Earthworm, Economic Evaluation, Soil Ecosystem Services, Soil Aggregation, Sustainable Agriculture.

Full Text

References

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Climate Resilient Agriculture in Manipur:Status and Strategies for Sustainable Development

Abstract Views :223 | PDF Views:77

Authors

S. S. Roy ¹, M. A. Ansari ¹, S. K. Sharma ¹, B. Sailo ¹, Ch. Basudha Devi ¹, I. M. Singh ¹, Anup Das ¹, D. Chakraborty ², A. Arunachalam ³, N. Prakash ¹, S. V. Ngachan ²

Affiliations
1 ICAR Research Complex for NEH Region, Manipur Centre, Imphal 795 004, IN
2 ICAR Research Complex for NEH Region, Umiam 793 103, IN
3 Indian Council of Agricultural Research, New Delhi 110 012, IN

Source

Current Science, Vol 115, No 7 (2018), Pagination: 1342-1350

Abstract

Manipur in India is endowed with rich biodiversity and abundant natural resources. Despite inaccessibility, marginality and heterogeneity, the state has made good progress in agriculture and allied sectors. About 80% of the state population depends on agriculture for livelihood. However, agriculture sector in Manipur is facing the consequences of climate change. Climate change is a reality and an increasing trend in temperature, precipitation and emission of greenhouse gases has been observed in Manipur. The state is also projected to experience more of extreme rainfall and reduction in crop yields. As subsistence level farming is coupled with prevalent shifting cultivation, the small and marginal farmers will be most affected due to climate change. Hence, there is an urgent need for devising climate proof plan and climate ready policy for climate compatible agricultural development in Manipur. Location-specific climate smart technology baskets need to be devised or introduced and should be demonstrated through participatory approach, for ensuring a climate resilient production system, and a climate resilient ecosystem. The interactions between the system’s adaptation strategies and the mitigation potential should also be given due importance in the action plan for combating climate change. This article deals with the present status of agriculture and allied sector and various technological and policy options for climate resilient agriculture in the hill and mountain ecosystems of Manipur.

Keywords

Climate Smart Agriculture, Climate Change, Northeast India.

Full Text

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