Crops

URBANA, Ill. – Genetically speaking, the loaf of bread you stress-baked during the COVID-19 shutdown is more complex than you think. Wheat’s 16 billion genes, organized in not one but three semi-independent genomes, can overlap or substitute for one another, making things extremely tricky for geneticists trying to enhance desirable traits in the world’s most widely grown crop.

CHAMPAIGN, Ill. — The crops we grow in the field often form dense canopies with many overlapping leaves, such that young “sun leaves” at the top of the canopy are exposed to full sunlight with older “shade leaves” at the bottom. In order to maximize photosynthesis, resource-use efficiency, and yield, sun leaves typically maximize photosynthetic efficiency at high light, while shade leaves maximize efficiency at low light. 

URBANA, Ill. – Like antibiotic-resistant bacteria, some herbicide-resistant weeds can’t be killed by available chemicals. The problem affects more than just the errant weed in our driveways; herbicide-resistant weeds threaten our food supply, stealing resources and outcompeting the crops that make up our breakfast cereal and feed the nation’s livestock.

The weed that represents the biggest threat to Midwestern corn and soybean production, waterhemp, has outsmarted almost every kind of herbicide on the market today.

URBANA, Ill. – Soil microbes are living, working barometers of soil health. They are responsible for turning atmospheric nitrogen into forms plants can use, and for releasing nitrogen back into the air. Farm management decisions undoubtedly affect these microscopic workhorses, but, until now, scientists didn’t have a full picture of how crop rotation and tillage influence the soil microbiome.

CHAMPAIGN, Ill. — Crop modeling is essential for understanding how to secure the food supply as the planet adapts to climate change. Many current crop models focus on simulating crop growth and yield at the field scale, but lack genetic and physiological data, which may hamper accurate production and environmental impact assessment at larger scales.

URBANA, Ill. ­– Climate change creates extreme weather patterns that are especially challenging for people in developing countries and can severely impact agricultural yield and food security. International aid organizations have invested billions of dollars in promoting climate-smart agriculture (CSA) practices, but the effects of those programs are rarely documented.

CHAMPAIGN, Ill. —  Lisa Ainsworth, a research plant physiologist with the USDA Agricultural Research Service and adjunct professor of plant biology and crop sciences at the University of Illinois, has been elected to the National Academy of Sciences — largely considered one of the highest honors that a scientist can receive.

URBANA, Ill. ­– Crop scientists are the original social distancers, muses Allen Parrish, director of the Crop Sciences Research and Education Center at the University of Illinois.

“Planting season is always a demanding time of the year,” he says. “We obviously have restricted working conditions with the social distancing because of coronavirus, but for the most part that’s the nature of our work­. One person on the ground getting things ready; one person in a sprayer or planter. Those are single-operator activities, so the current conditions don’t critically hinder us.

URBANA, Ill. ­– Soybean production in Africa and other developing regions has the potential to alleviate hunger and boost local economies. But the transition from traditional crops such as cowpea or cassava to a major commercial crop such as soybean is fraught with challenges.

The soybean cyst nematode sucks the nutrients out of soybean roots, causing more than $1 billion in soybean yield losses in the U.S. each year. A new study finds that one type of fungi can cut the nematodes’ reproductive success by more than half.

Read more from the Illinois News Bureau.