Climate Change Effects Food Production

If average global temperatures rise just over one-half degree Centigrade the frost-free growing season in the corn belt would be lengthened by two weeks. But, as the previously mentioned study showed, if temperatures increase beyond a specific threshold, fertilization is effected, thus reducing the plants growing season and reducing yield.

Carbon dioxide does two things for plants – it is an essential compound in photosynthesis and it increases water use efficiency in plants – so a doubling of the pre-industrial carbon-dioxide levels, such as we’ve seen, should increase crop yields significantly right?

http://aheadoftheherd.com/Newsletter/2012/Climate-Change-Effects-Food-Production.htm