Geoscience Reference
In-Depth Information
Maize
India
Up to 4°C
rise
350-700 ppm
Decreased yield in both irrigated and rainfed
conditions. With 350 ppm CO
2
and up to 4°C
yield decreased by 30% but at 700 ppm CO
2
yield increased by 9% over present day
condition
Sahoo (1999)
Brassica
North
Varied
Varied
Production is likely to increase and extend its
range at relatively drier regions
Uprety et al. (1996)
Chickpea,
pigeon pea
India
Up to 2°C
rise
350-700 ppm
Chickpea yield not increased with reduction in
total crop duration but increase in CO
2
increased yield while yield of pigeon pea
decreased at 1°C increase
Mandal (1998)
Soya bean
Central
3°C rise with
10%
decline in
rainfall
Doubled
50% yield increase in Central India but at 3°C
increase no effect of doubling CO
2
as yield
reduced which was acute at reduction of daily
rainfall decreasing yield by 32%
Lal et al. (1999)
