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Star Tribune: Weeds resistant to herbicides challenge farmers

Herbicide resistance in weeds is far from a new concept to University of Minnesota Extension agronomists, who have been conducting research and education on it for three decades. But it is an increasingly challenging issue for crop producers. Recently, Star Tribune reporter Tom Meersman spent several hours with Extension weed scientist Jeff Gunsolus to better understand the science behind the problem, and on Aug. 2, published this story.

Extension is helping crop producers meet the challenges of today's agriculture through direct education, resources and tools, and also reaches more farmers through the agricultural professionals who advise them.


                   Giant ragweed                         Waterhemp seedling and seeds                 Common ragweed
Source: University of Minnesota


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Root Exudates, Soil Biology, and How Plants Recruit Microbes | Field Talk Friday

Video: Root Exudates, Soil Biology, and How Plants Recruit Microbes | Field Talk Friday



Field Talk Friday | Dr. John Murphy | Root Exudates, Soil Biology, and How Plants Recruit Microbes

Most of us spend our time managing what we can see above ground—plant height, leaf color, stand counts, and yield potential. But the deeper you dig into agronomy, the more you realize that some of the most important processes driving crop performance are happening just millimeters below the surface.

In this episode of Field Talk Friday, Dr. John Murphy continues the soil biology series by diving into one of the most fascinating topics in modern agronomy: root exudates and the role they play in shaping the microbial world around plant roots.

Roots are not passive structures simply pulling nutrients out of the soil. They are active participants in the underground ecosystem. Plants constantly release compounds into the soil—sugars, amino acids, organic acids, and other molecules—that act as both energy sources and signals for soil microbes.