[PDF][PDF] Simulation of yield and its component traits of rice (Oryza sativa L.) varieties grown in Indo-Gangetic plains of Bihar under projected climate change

R Elanchezhian, AA Haris, S Biswas… - Indian Journal of Plant …, 2012 - icarrcer.icar.gov.in
Indian Journal of Plant Physiology, 2012icarrcer.icar.gov.in
SUMMARY A study was planned to analyse the impact of climate change on growth and
yield of three rice varieties differing in duration viz. Saket 4 (short duration variety), Sita
(medium duration variety) and Radha (long duration variety) using simulation model
INFOCROP. Crop growth and physiological parameters were recorded and used for
simulation and validation in INFOCROP model. Crop growth and yield data were simulated
for Pusa, Bihar, alongwith weather data from 1997 to 2005 and used for projecting the …
Summary
A study was planned to analyse the impact of climate change on growth and yield of three rice varieties differing in duration viz. Saket 4 (short duration variety), Sita (medium duration variety) and Radha (long duration variety) using simulation model INFOCROP. Crop growth and physiological parameters were recorded and used for simulation and validation in INFOCROP model. Crop growth and yield data were simulated for Pusa, Bihar, alongwith weather data from 1997 to 2005 and used for projecting the performance of rice varieties for future scenario of 2020, 2050 and 2080 with respect to A2 climate change scenario. The reproductive development of rice delayed by elevated C02• Higher CGR and LAI were recorded in short and medium duration variety under future climate change scenario as compared to the present conditions. The yield trend was similar in the varieties up to 2050 and the maximum being at 2050 and declined thereafter in 2080. In long duration variety (Radha), maximum yield was projected at 2020. It was observed that shorter duration variety (SOY) perform better than medium I longer duration varieties under scenarios for 2020, 2050 and 2080. The results suggest that SDVs can be better proposition under future climate change scenarios for growing in lndo-gangetic plains of Bihar.
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