Reply #6: I have seen several reports about organic yields vs. conventional yields

[onestepforward]

and from what I've read, it seems to be close to the same. Here is one:

http://www.sare.org/publications/organic/organic01.htm

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More recent research also shows that organic farming systems can be equally productive and economically competitive with conventional systems, and in some cases, more resilient. Consider that:

A study comparing long-term established organic and conventional tomato farms in California's Central Valley found comparable yields.
An article published in the Organic Farming Research Foundation Bulletin reviewing data from seven universities and two research station experiments verified that organic corn, soybean and wheat yielded, on average, 95 percent of conventional.
Many studies have shown that organic systems perform better than conventional ones under drought conditions.

This is an interesting article: "United Nations: Organic Farming Can Feed Africa"

http://www.rodale.com/organic-farming-and-food-security

Organic farming can feed Africa and bring higher incomes to poor, rural farmers, according to a United Nations report focusing on food security and sustainability issues. The report, compiled by the UN Conference on Trade and Development (UNCTAD) and the UN Environmental Programme (UNEP), contradicts a popular myth that organic-farming methods can’t produce enough food to feed the world.

THE DETAILS: Much of the study data comes from East Africa, where an organic-agriculture project was put into place in 2004. Organic and near-organic crop yields in the 24 countries studied increased by 116% since the start of the project. In 11 of 13 cases, food production rose—and sometimes doubled—when farmers switched from chemical methods to more sustainable, organic growing methods. The report’s authors argue this will feed millions more and bring much more food security to the continent.
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You are right, too many people using too many resources. Changes must be made. I do think that there are many positive benefits from organic and sustainable farming. :)