"'We are at a crossroads in terms of our investments in agriculture and what we will need to do to feed the world population by 2050,' said David Zaks, a co-author of the report and a researcher at the Nelson Institute’s Center for Sustainability and the Global Environment.
By 2050, world population is expected to exceed 9 billion people, up from 6.5 billion today. Already, according to the report, a gap is emerging between agricultural production and demand, and the disconnect is expected to be amplified by climate change, increasing demand for biofuels, and a growing scarcity of water.
'There will come a point in time when we will have difficulties feeding world population,' said Zaks, a graduate student whose research focuses on the patterns, trends and processes of global agriculture.
Although unchecked population growth will put severe strains on global agriculture, demand can be met by a combination of expanding agriculture to now marginal or unused land, substituting new types of crops, and technology, the report’s authors conclude."
Needless to say, I disagree with their rosy assessment. What the report’s authors fail to take into account is that we cannot currently feed the population we have as famine still ravages parts of the world right now. Expanding to growing food on "now marginal or unused land" may produce more food for a brief time, but you cannot simply grow and grow and grow on the same land forever or you will ruin it. Land must periodically be left to stand fallow for one or more seasons in order to maintain its vitality; that is why farmers often rotate fields into and out of use on yearly cycles. So, it is not a matter of just planting up all of the unused ground to solve the problem.
That also doesn't even touch on the fact that certain critical, non-renewable components in the production of man-made fertilizers are beginning to show signs that they are evidently experiencing the peak of their supply/demand curve. This is vitally important because it will most likely be impossible to maintain even our current population without man-made fertilizers, much less an additional 2.5 billion people.
And, another issue they fail to address revolves around a resource that is seemingly ubiquitous: water is already becoming an issue with our current population numbers. I can scarcely fathom the effects of adding another 50% population growth to the availability and quality of fresh water, but I'm confident it won't be good.


