What soil smell can reveal about soil health
Ecologist Rosa Boone says soil odors can provide clues about the fungi and bacteria that contribute to soil health. Her research found that soil smell can be captured and analyzed in a laboratory, pointing to the potential for an “electronic nose” that could assess microbial life as soil monitoring becomes more important.
Farmers have traditionally used soil smell as an indicator of its condition, according to Phys.org. Ecologist Rosa Boone said fungi and bacteria in soil are important to soil health and help produce its smell.
Boone found that soil odor can be captured and analyzed in a laboratory to provide information about microbial communities. She said the work could support development of a sensor, described as an “electronic nose,” to analyze microbial soil life through smell.
Boone said monitoring soil life is becoming increasingly important in connection with forthcoming soil monitoring guidelines.
THE QUESTIONS THIS EVENT LEAVES BEHIND
What conditions would determine whether an electronic nose can measure soil health reliably in the field?
How might farmers use microbial smell data if the technology becomes available?
Who would set the standards for interpreting soil odors under forthcoming monitoring guidelines?
Could different soil types require different benchmarks for microbial health?
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GLOBAL CURIOSITY MAP · AUGUST 2026