Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges &
Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
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T1-14P-1037
Irrigation Requirement of Major Crops Under Changing Climatic
Scenarios in Northern Gujarat Zone
R. Rejani*, K.V. Rao, K. Sammi Reddy, D. Kalyan Srinivas, G.R. Chary,
K.A. Gopinath, M. Osman and M. Prabhakar
ICAR-Central Research Institute for Dryland Agriculture, Hyderabad- 500 059, India
*rrejani10@gmail.com
Prolonged dry spells during the critical growth stages of the crops affect the rainfed crops,
especially in the arid, semi-arid regions and dry sub-humid zones which in turn results in crop
failure or reduction in yield. In India, the average temperature is predicted to increase by 2 to
4 0 C with changes in the distribution and frequency of rainfall, number of rainy days and
extreme events. Long term data analysis (1953-2000) indicated that Rajasthan, Gujarat and
Andhra Pradesh are severely affected by drought. Many studies projected the adverse impacts
of climate change on India’s water resources, agriculture and other ecosystems and hence
concerted efforts are required for its mitigation and adaptation to reduce the adverse impacts
and make Indian agriculture more resilient. In rainfed areas, the adoption of suitable in-situ
interventions and supplemental irrigation are very essential to save the crops from prolonged
dry spells. The selected study area, Northern Gujarat zone also suffers from prolonged dry
spells coinciding with the vegetative and reproductive stages of the major rainfed crops and the
adoption of suitable interventions are very important. Therefore, adoption of suitable in-situ
moisture conservation measures and supplemental irrigation is very important for this area.
Hence the present study was taken up to estimate the irrigation requirement of the major crops
spatially and to find its variability over the years and also under changing climatic scenarios.
Methodology
The Northern Gujarat zone includes Ahmedhabad, Banaskantha, Gandhinagar, Mehsana, Patan
and Sabarkantha districts and this region is highly vulnerable to the impact of climate change.
This zone is semi-arid with an average annual rainfall of 613 mm. Around 94% of the rainfall
is contributed by south-west monsoon, 4% by north-west monsoon and the remaining 2% is
48 | Page Resilience through land and water management interventions, water management and governance