Warmist President Obama Wrong, Wrong And Wrong

Posted on Wed 05/17/2017 by

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By Andrew Bolt ~

Global warming is a licence to tell untruths.

Take former U.S. President Barack Obama:

Our changing climate is already making it more difficult to produce food… We’ve already seen shrinking yields and rising food prices.

This is indeed what climate alarmists have been predicting for decades.

But 2016 in fact had record harvests, which have been steadily rising.

If Obama means only the harvest per hectare is shrinking, he’s again wrong.

From a CSIRO report:

World wheat, rice and soybean yields have been increasing linearly over the past 20 years.

And he’s wrong about food prices, certainly when measured in real terms:

So wrong, wrong and wrong. But which expert will denounce untruths told in such a noble (?) cause?

UPDATE

The CSIRO report does warn that yield growth may slow or even stop, but global warming has little or nothing to do with that:

Claims regarding crop yield prospects abound, and range widely, causing much confusion and uncertainty. As an example, in 2008 Monsanto (the multinational crop breeding company) optimistically projected that US maize yields would double between 2000 and 2030, largely driven by new biotechnology (including genetic engineering). This means farm yield would rise from an already high 9.4 t/ha to 18.8 t/ha—equivalent to an unprecedented rate of linear growth equal to 3.3% p.a. of the 2000 yield.

On the other hand, Duvick and Cassman (1999) argued that the potential yield for maize (in the same US Mid West region) has already reached a plateau, despite the huge investment of research dollars targeting this crop. Furthermore, co-author and leading US agronomist Cassman predicts that farm yield is fast approaching this potential yield plateau (K.C. Cassman, pers. comm.). A plateau in yield conjures up visions of an approach to biological limits to yield—long foretold and usually ‘disproven even before they are forgotten’ as Evans (1993) wryly commented—but there is little doubt such limits exist.

Andrew Bolt writes for the Herald Sun, Daily Telegraph, and The Advertiser and runs Australia’s most-read political blog. On week nights he hosts The Bolt Report on Sky News at 7pm and his Macquarie Radio show at 8pm with Steve Price.

Read more excellent articles from Andrew Bolt’s Blog . http://blogs.news.com.au/heraldsun/andrewbolt/

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