Abstract
The present investigation was carried out to study the impact of climate change on summer groundnut in middle Gujarat using calibrated CROPGRO-peanut model by changing maximum and minimum temperatures by -2 to +30C and increasing concentration of CO2 upto 550 ppm. Results revealed that with increase in maximum temperature by 3 0C, the pod yield was decreased by 39 to 48 per cent in different cultivars. The effect of minimum temperature on pod yield was less as compared to maximum temperature. The simulated pod yield increased upto 41 per cent with elevated CO2 concentration of 550 ppm. However, if the maximum temperature was increased alongwith increase in CO2 concentration the pod yield could be compensated upto 2 0C with CO2 of 500 ppm, but further increasing of the maximum temperature and carbon dioxide caused decrease in the pod yield.
Highlights
Key words : CROPGRO-peanut model, climate change, groundnut cultivars In India, 80 per cent of the groundnut area and 84 per cent of its production is confined to the states of Gujarat, Andhra Pradesh, Tamil Nadu, Karnataka and Maharashtra
With 3 0C increase in maximum temperature, the pod yield decreased between -39 and -48 per cent, the highest effect being in cultivar TG 26 and lowest in GG 2
Patel et al (2013) reported that due to climate change the pod yield of groundnut would decrease by 20 to 36 per cent by end of the century (2071-2100), mainly due to increase in temperature.Mishra et al (2015) reported that the elevated maximum temperature decreased yield of wheat significantly
Summary
In India, 80 per cent of the groundnut area and 84 per cent of its production is confined to the states of Gujarat, Andhra Pradesh, Tamil Nadu, Karnataka and Maharashtra. The sensitivityanalysis was done with input parameters which include maximum and Effects of change in temperature and CO2 on summer groundnut in middle Gujarat
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