I'm a commercial farmer, and the statement of factory farms is quite mistaken. I guess your definition of factory farm may be different than the farmer.
Small farms still produce a majority of the grain produced. In our community there are Amish, they do have small farms. Averaging about 100 acres. We farm 1000 acres of grain crop, 60 acres of hay and now only 130 head of cattle (down from 600 head 2 years ago). The acres we farm is in the average of most family farms in the area. There are a few farms here that are in the 4-5000 acre area, but they still struggle to stay afloat.
I also agree that organic farming couldn't feed the nation or the world. One primary reason is the nutrients in the soil have been depleted and there's no getting a lot of ground back into non chemical production. An example is selenium, in the last report I read they can not find anything but mere trace amounts in the US. Also the no-till type of crop production, yes this does help with soil erosion, but there is never organic material put back in the soil.
As to the amount of production needed to feed the population, the latest report is saying with the rapid loss of tillable land/population growth our production must increase by 35% in the next 5 years. That in reality is an insane amount to gain in any situation. They are working on more hybrids and trying to come up with more "energetic" fertilizers. Another major problem is Pot Ash, China holds the market on this and in the past few years between strikes and greed this mineral hasn't been applied at the rates needed. Because of cost and availability.
There are so many variables to the production of the worlds food that this topic could go on endlessly.
Kindest wishes, Dave
Everyday problems teach us to have a realistic attitude.
They teach us that life is what life is; flawed.
Yet with tremendous potential for joy and fulfillment.
~Lama Surya Das~
If your path teaches you to act and exert yourself correctly and leads to spiritual realizations such as love, compassion and wisdom then obviously it's worthwhile.
~Lama Thubten Yeshe~
One whose mind is freed does not argue with anyone, he does not dispute with anyone. He makes use of the conventional terms of the world without clinging to them