Shale gas, which accounted for only about 2 percent of U.S. oil production a decade ago, now comprises 37 percent of this total — a change that not only has set off a sharp decline in natural gas prices, but has also sparked a national debate about how much of this domestically produced gas should be exported.

Runge says these advances have detracted from what is arguably one of the most under-reported developments of the last decades: U.S. farming’s huge strides in energy efficiency.

“Technological advances have played as big a role in enhancing agricultural production as they have in other sectors of the economy,” he says.

Two farming innovations he cites as especially noteworthy are the adoption of transgenically engineering crops and precision agriculture, both of which have enabled farmers to produce more, but with less fuel, water and other inputs.

Runge’s colleague, Mark Hall, an Alabama Extension agronomist and renewable energy expert cites no-till farming as another significant contributor.

“It’s sounds simple enough — not turning over the soil but simply planting a crop into the previous season’s stubble — yet, this practice has changed the face of farming drastically by improving the fuel consumption picture,” Hall says.

While the rise of pigweed and horseweed has stymied these advances in no-till, Halls says too much is at stake for producers to turn back. Hall says producers will employ every conceivable measure to stick with no-till practices.

Hall says farmers and researchers alike are becoming increasingly aware of how a more detailed picture of all facets of farming product can shed even deeper insight into how additional advances can be made in energy efficiency.

For his part, Hall has conducted a series of studies on seeding rates to better ensure that crops achieve canopy sooner — a practice that, by crowding out weeds, reduces the need for pesticide applications, which also contributes to lower fuel costs.

“Like every other facet of the economy, farming has gotten a lot more complicated because more information is being churned out,” Hall says, “but this is a good thing because it affords all of us with more options,” Hall says.

“In that respect, we’re not different than the oil industry and everyone else.”