There wouldn’t be biofuels if there was no breakeven point, so YES, biofuels will work. Some work better than others, obviously.
As of now biofuels don’t amount to much in the way of total use of production, and are not causing food shortages. The price of crude is driving up prices, and there is rising demand for food (as usual), along with some drought here and there.
Acreage under cultivation goes up and down, but due to improvements in yield (some of which is due to petrochemical use, including mechanization) acreage per capita has been on a slow decline in this country.
Breitbart (AP) article: Haiti President Announces Drop in Rice
(snip)
Globally, food prices have risen 40 percent since mid-2007. Haiti, where most people live on less than US$2 (euro1.26) a day, is particularly affected because it imports nearly all of its food, including more than 80 percent of its rice.
Much of Haiti's once-productive farmland has been abandoned as farmers struggle to grow crops in soil decimated by erosion, deforestation, flooding and tropical storms.
Reuters article: Haiti's government falls over food riots