Environment

Illinois once harbored more than 8 million acres of wetlands. By the 1980s, all but 1.2 million wetland acres had been lost, filled in for development or drained to make way for agriculture. Now, thanks to a 2023 Supreme Court decision, roughly 72% of the remaining 981,000 acres of Illinois wetlands are no longer protected by the federal Clean Water Act, putting communities at risk of losing the flood control, groundwater recharge, water purification and natural habitat these wetlands provide, researchers report.

In a decisive new study, crop scientists at the University of Illinois Urbana-Champaign

A team of agricultural economists, environmental scientists and policy experts envisions a path toward a carbon-neutral agricultural future by expanding the reach of policies designed to promote low-carbon biofuels for transportation and aviation. In a new paper in the journal Science, the researchers propose policies that would reward farmers for adopting “climate-smart” practices when growing biofuel crops and remove the hurdles that currently thwart such efforts.

Tile drainage is a common practice used in agricultural fields to remove excess water, but it also transports harmful nutrients into water bodies, contributing to algal blooms that deprive aquatic life of oxygen. Woodchip bioreactors are an efficient way to reduce nitrogen pollution by treating the water as it exits the field. However, these denitrifying bioreactors may leach phosphorus from the woodchips into the environment.

Excessive heat will once again blast much of the United States next week, with heat indices predicted to reach 110 degrees Fahrenheit or more in many locations.

While the majority of Midwestern farmers rotate corn and soybeans, commodity prices and corn yield advantages compel some to plant corn year after year.

The global food system faces growing risks from climate change, even as farmers seek to adapt, according to a June 18 study in Nature.

In contrast to previous studies suggesting that warming could increase global food production, the researchers estimate that every additional degree Celsius of global warming on average will drag down the world’s ability to produce food by 120 calories per person per day, or 4.4% of current daily consumption. 

Laboratory and field experiments have repeatedly shown that modifying the process of photosynthesis or the physical characteristics of plants can make crops more resilient to hotter temperatures. Scientists can now alter the abundance or orientation of leaves, change leaf chemistry to improve heat tolerance and adjust key steps in the process of photosynthesis to overcome bottlenecks, researchers report in a new review in the journal Science.

In a review in The Philosophical Transactions of the Royal Society B, Stephen Long, a professor of crop sciences and of plant biology at the University of Illinois Urbana-Champaign, describes research efforts to “future-proof” the crops that are essential to feeding a hungry world in a changing climate.

Gully erosion is the most severe form of soil erosion, and it can seriously impact agricultural fields, contributing to sediment loss and nutrient runoff into waterways. Gullies can be triggered suddenly by a single heavy rainfall event, creating deep channels that are difficult to rehabilitate even with heavy machinery. Accurately predicting where gully erosion is likely to occur allows agricultural producers and land managers to target their conservation efforts more effectively.