Increase
(minimum
temperature
in JulyAugust)
Increase
(maximum
temperature
in JulyAugust)
Decrease
(minimum
temperature
in SeptemberOctober)
Decrease
(maximum
temperature
in SeptemberOctober)
Decrease
(min and max
temperatures
in SeptemberOctober)
Increase/Decr
ease in July –
August
Increase yield
Decrease yield
Increase yield
Decrease yield
Increase
But in general
an increase in
temperature by
as small as 0.3C
is associated
with a decline in
yield, though
there may be
increase in yield
if temperature
increase by 1.5C
and 3.0C,
demand for
irrigation water
would be
induced (evapotranspiration
Mahmood,
et al., 2012
Decrease yield
Adaptation to climate change
A survey of the literature showed that oft-cited short-term adaptation strategies include “changes in planting
dates and cultivars; changes in external input such as irrigation; techniques in order to conserve soil water”
(Alexandrov, et al. (2002), p.383). For example, for Austria, Alexandrov, et al. (2002) suggested that spring
crops be sown earlier “in order to reduce yield loss or to further increase the projected gain resulting from
an increase in temperature” (p.384).
Conde, et.al (1997) assessed the potential increase in production costs as a result of the implementation of
adaptive measures to reduce climate change impacts. They suggested fertilization as a measure for adapting
to climate change in Mexico. However, they noted the importance of subsidies from governments to be able
to continue both maize production and fund the use of fertilizers. However they also noted that “under a
non-subsidy policy, the application of this adaptive measure would become unfeasible due to the high
production costs involved, since profits would be reduced and losses could even occur” (p.21).
Burke and Lobell (2010), on the other hand, differentiated between ex-ante and ex-post measure. While exante measures refers to the action taken in “anticipation of a given climate realization” which often center
around diversification of crops among others, ex-post measures are responses “undertaken after the event
is realized” which include “drawing down cash reserves or stores of grain, borrowing from formal or
informal credit markets or family, selling assets such as livestock, or migrating elsewhere in search for
work in non-affected regions” (p.135). However, Burke and Lobell (2010) argued that not all strategies for
adaptation are available to farmers. They noted that “existence of social safety nets and functioning financial
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