The latest agriculture research on climate change effects clearly prove that IPCC climate model predictions of looming crop failures are bogus - wheat study result opposite of IPCC fabricated myth
Read here. Without doing any original empirical agriculture research, the IPCC "scientists" programmed their computers to predict that agriculture crop output would decline with increasing levels of CO2 and global warming. Their reasoning behind this prediction was that increased warming would cause evaporation of soil moisture thus producing looming crop failures. The IPCC computer models were wrong, again.
Chinese scientists (Xiao et al.) studying climate change effects on crops performed original agricultural research on winter wheat that grows in two different semi-arid regions. Their results debunked the agriculture myths promulgated by the IPCC.
"...grew wheat in China at several different relatively high elevation sites (1,798 m at Tongwei and 2,351 m at LuLu Mountain), and the artificially increased the temperature up to 2.2ºC. At the Tonwei site, the elevated temperatures increased grain output by over 3% and by up to 6% at LuLu Mountain. Not surprisingly, they write “These findings indicate that an increase in temperature will improve the winter wheat yield at two different altitudes.”...“The results of this study revealed that a 0.6–2.2°C increase in temperature improved the water use efficiency (WUE) of winter wheat plants at both elevations evaluated.”...“It is expected that by 2030 warming temperatures and changes in rainfall will have led to the increase of 3.1% in wheat yields at a low altitudes and of 4.0% in wheat yields at high altitude in semiarid northwestern China, and that by 2050, there will have been the additional increase of 2.6% and 6.0%, respectively, at these altitudes”" [Guoju Xiaoa, Qiang Zhangb, Yu Lib, Runyuan Wangb, Yubi Yaob, Hong Zhaob, Huzhi Baib 2010: Agricultural Water Management]