Impacts of climate change on sorghum productivity in India: Simulation study

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:248061

Gangadhar Rao, D; Katyal, J C; Sinha, S K; Srinivas, K ^[1]

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1. Central Research Inst. for Dryland Agriculture, Hyderabad (India)

An attempt was made to assess the impact of climate change on the crop productivity of sorghum [Sorghum bicolor (L.) Moench] in India. Climate change scenarios were projected for three sorghum growing areas in India using three global climate models (GCMs) namely; Goddard Institute of Space Studies (GISS), Geophysical Fluid Dynamics Laboratory (GFDL), and United Kingdom Meteorology Office (UKMO). The three diverse sorghum growing areas selected were Hyderabad, Akola, and Solapur. In the first two regions sorghum is grown in the rainy season, whereas in the third region it is grown in the post rainy season. Crop growth was simulated using the CERES-sorghum simulation model with climate change scenarios generated by the GCMs. The simulations were run with and without the direct effects of doubled atmospheric CO{sub 2} levels, under dryland, low N conditions, and under nonlimiting water and nutrient conditions. The simulated results indicated a decrease in yield and biomass of rainy season sorghum at Hyderabad and Akola under all climate change scenarios. Post rainy season sorghum grown at Solapur on stored soil water showed a marginal increase in yield. The positive effects of increased CO{sub 2}, if any, were masked by the adverse effects of predicted increase in temperature resulting in shortened crop growing seasons.

• OSTI ID: 248061
• Report Number(s): CONF-9211217--; ISBN 0-89118-126-1
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
56 BIOLOGY AND MEDICINE
APPLIED STUDIES
BIOLOGICAL EFFECTS
C CODES
CARBON DIOXIDE
CLIMATIC CHANGE
ECOLOGICAL CONCENTRATION
ENVIRONMENTAL IMPACTS
FORECASTING
INDIA
PLANT GROWTH
PRODUCTIVITY
SEASONAL VARIATIONS
SORGHUM