Impacts of Climate Change on Agriculture - Climate Resilient Agriculture for Ensuring Food Security - page 57

Fig. 4.5 Sensitivity of cereal ( a , b ) maize (mid- to high
latitude and low latitude), ( c , d ) wheat (mid- to high latitude
and low latitude), and ( e , f ) rice (mid- to high latitude) to

climate change as determined from the results of 69 studies,
against temperature change. Results with ( green ) and with-
out ( red ) adaptation are shown (Easterling et al. 2007 )

any temperature increase, even as much as the
7-9 °C indicated for high latitudes under a dou-
bling of CO 2 , can be expected to enhance yields
of cereal crops. For example, near the current
northern limit of spring wheat production in the
European region of the USSR yields increase
about 3 % per °C, assuming no concurrent change

in rainfall. In Finland, the marketable yield of
barley increases 3-5 % per °C, and in Iceland hay
yields increase about 15 % per °C (Kettunen
et al. 1988 ).
Away from current temperature-constrained
regions of farming and in the core areas of
present-day cereal production such as in the Corn