Agrotechnology

The impact of climate change and rice (Oryza sativa L.) food security in India

3^rd International Conference on Agriculture & Horticulture

October 27-29, 2014 Hyderabad International Convention Centre, India

Jai Prakash Bhimwal, Rajiv Kumar and Arunima Paliwal

Posters: Agrotechnol

Abstract:

Impact of climate change on agricultural ecosystems has been a matter of concern for food security in world. Increase in temperature, higher Co2 concentrations and abnormal patterns of precipitations coupled with higher frequency and intensity of drought and floods are likely to enhance considerably the climate risk to the major agricultural ecosystems. Climate Impact and Rice Production in India which support the livelihood security for very large number of poor and marginalize in India, has been reported in this paper. A proof of the concept study has been conducted using ORYZA series of soil-vegetationatmosphere transfer (SVAT) models. These models have been extensively validated in rice agro-ecosystems of different parts of the world as well as in India to simulate the growth and yield of rice. Developed for small plots and address vertical transfers of water and energy fluxes in the SVA continuum, these models form an important tool for climate risk assessment of rice ecosystems as well. In this context, the SVAT model - ORYZA has been coupled with spectral interfaces in order to validate the model and to simulate potential as well as actual production of the rice crop. With this approach, the effects of elevated temperature and Co2 concentrations on the yield of rice grown in three agro-ecologically different environments of South and Eastern parts of India have been analyzed. While higher Co2 concentrations have usually been associated with increasing rice yield and higher temperatures have yield reducing impact, this trend however has been found to be inconsistent in case of the different rice varieties grown in the study areas. Those having higher sensitivity and larger variance in the relationship between rise in temperature and reduction in crop yield have found riskier in climate change scenarios. For those climatic sensitive regions, the adaptation need is therefore to develop rice crop varieties having higher tolerance to increase in temperature and more responsive to higher Co2 concentrations. Such innovation only leads to integration of climate change adaptation and disaster risk reduction.

Biography :

Jai Prakash Bhimwal is Assistant Professor in Department of Agriculture Science & Engineering, IFTM University Moradabad, Uttar Pradesh, India. He has obtained his BSc Agriculture degree from Sher- E- Kashmir University of Science & Technology- Jammu in 2011 and MSc Agronomy from Govind Ballabh Pant University of Agriculture & Technology- Pantnagar in 2013. Thereafter in 2014, he qualified NET in Agronomy from ICAR, New Delhi. He has throughout a brilliant academic record. His area of specialization is Weed Management in Transplanted rice.