Dandelions are pretty, but weeds nationwide cost homeowners, farmers, ranchers and land managers tens of billions of dollars each year in control measures and lost production. They also endanger fragile ecosystems and can increase threats of erosion and wildfire. At the UC Davis Department of Plant Sciences, scientists are looking for ways to control pesky plants in rice fields, orchards, rangelands, farms, natural areas ̶ and even in people’s yards. Their work aims to benefit agriculture and the preservation of our natural resources.
Researchers have developed a more high-tech weapon against the invasive weed: artificial intelligence and machine learning. Using photos from Google’s Street View database, the researchers tracked down more than 2,000 cases of johnsongrass.
UC Davis researchers, led by Professor Brad Hanson, combat Orobanche ramosa, a parasitic weed threatening California's $1.5 billion tomato industry. Funded by the California Tomato Research Institute, the multidisciplinary effort focuses on detection, management, and long-term solutions.
UC Davis researchers explore electrical weed control as an alternative to herbicides. The project uses a tractor equipped with an electrical generator to deliver electrical energy to weeds, damaging their cells and causing rapid death. The three-year study assesses the machine's effectiveness, its impact on crop safety, and soil health.
Folks in Davis know Brad Hanson as the Weed Doctor, always available during the annual UC Davis Picnic Day festivities to answer questions about what’s that growing in the yard. He's equally knowledgeable about solving farmers’ issues, and that commitment was recognized recently when he was named a fellow of the Western Society of Weed Science. The distinction is the society’s highest honor and recognizes people who have made significant contributions to the society and to the discipline of weed science.
The USDA will allow the release of a weevil (Ceratapion basicorne) in the United States to help control yellow starthistle, an invasive weed found in 40 of the lower 48 states. The weevils will initially be released in California. Brad Hanson, weed specialist in Plant Sciences, addresses management of yellow starthistle.
Control of branched broomrape, a parasitic weed that can badly infest tomato and other crop fields, was addressed by UC Davis, UC ANR researchers — Brad Hanson, Mohsen Mesgaran, and Matt Fatino — at the annual Weed Day field day at UC Davis.
