The physical structure of corn plants — including the angle of leaves bending from the stem and the number of pollen-laden tassel branches — makes a big difference for yield. Compact plants can be planted closer together, adding up to more ears per acre. But compact corn didn’t happen by accident; years of hybrid breeding did that. Now, two new genome-based studies are making it possible to precisely adjust corn architecture to meet future demands.

Unfertilized soybean fields with lower soil fertility should be planted earlier than high fertility fields, according to a University of Illinois Urbana-Champaign study

The U.S.

Most corn and soybean fields in the U.S. are planted with herbicide-resistant crop varieties. However, the evolution of superweeds that have developed resistance to common herbicides is jeopardizing current weed management strategies. Agricultural robotics for mechanical weeding is an emerging technology that could potentially provide a solution.

Drought stress has long been a limiting factor for crop production around the world, a challenge exacerbated by climate change.

For more than a century­, scientists have targeted a key plant trait known as water use efficiency (WUE) to help crops grow with less water and avoid suffering from drought stress. Greater WUE can help plants avoid drought stress – but for most crops it’s also associated with lower productivity when water is plentiful.

Researchers analyzed the financial and environmental costs and benefits of four biofuels crops used to produce sustainable aviation fuels in the U.S. They found that each feedstock — corn stover, energy sorghum, miscanthus or switchgrass — performed best in a specific region of the rainfed United States. Their study will help growers and policymakers select the feedstocks most suited to meeting goals like reducing production costs, lowering greenhouse gas emissions and building soil carbon stocks. 

The pathogen that causes bacterial spot is very good at what it does. Forming small lesions on the rinds of pumpkins, melons, cucumbers, and other cucurbits, it mars the fruits’ appearance and ushers in secondary pathogens that lead to rot and severe yield loss. The bacterium, Xanthomonas cucurbitae, is so successful that it has had no reason to evolve through time or space.

In the quest to optimize crop productivity across environments, soybean breeders test new cultivars in multiple locations each year. The best-performing cultivars across these locations are selected for further breeding and eventual commercialization.

In a changing climate, corn growers need to be ready for anything, including new and shifting disease dynamics. Because it’s impossible to predict which damaging disease will pop up in a given year, corn with resistance to multiple diseases would be a huge win for growers.

Russia’s invasion of Ukraine in February 2022 caused an immediate disruption in the global wheat market, with serious implications for food prices and global food security. Wheat is a staple commodity in many countries and one of the most extensively traded crops worldwide.