Solar-powered drip irrigation systems significantly increased vegetable production in villages in the western African nation of Benin, improving nutrition and boosting household incomes, according to a new study. The study, led by a researcher at Stanford University’s Program on Food Security and the Environment, installed solar-powered drip irrigation systems in two villages in Benin and compared the impact with two nearby villages that did not have drip irrigation systems.
The study found that, after a year, farmers with the solar irrigation systems saw vegetable production increase by 500 to 750 grams per person per day — three to five times greater than the villages that did not have irrigation systems.
The significantly increased yield meant that farmers could feed their families and sell up to 80 percent of their harvest at local markets, sharply increasing household income, according to the study, published in the Proceedings of the National Academy of Sciences.
Cellulosic ethanol has been hailed as the next frontier in renewable fuels. After all, most ethanol in the U.S. comes from corn, a staple product in the food chain. Use more corn for ethanol, and you’re bound to drive up food prices. If you’ve seen “King Corn,” you know the score. Corn ethanol also has its problems with energy inputs versus energy outputs. In other words, the benefits can be sketchy.