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Soil Sense

89 EpisodesProduced by NDSU ExtensionWebsite

Welcome to the Soil Sense Podcast, where we believe that building healthier soils is not just a prescription, but rather a pursuit. This journey requires collaboration, curiosity, and communication among farmers, agricultural researchers, agronomists, consultants, and extension. You’re going to hear… read more

29:08

Catching Carbon with Dr. Caley Gasch and Dr. Mark Liebig

Soil health has been increasingly in the spotlight in recent years, and no topic has been drawing more attention than the concept of soil carbon. Specifically, can farmers optimize the amount of carbon they pull from the air and store in the soil based on farming practices? And can that carbon sequestration reach levels where it’s part of the solution to climate change?

Much of the exuberance surrounding these topics glosses over the science involved. To put this concept into perspective we have on the show Dr. Mark Liebig with the USDA ARS, and Dr. Caley Gasch who is a soil ecologist with North Dakota State University. The audio was recorded at the “Catching Carbon” live workshop put on by the North Dakota Corn Council, NDSU Extension, and USDA.

“It's no surprise that when we think about dealing with the challenges in the future, we've got to look to the soil...It's going to be a really big part in how we create systems that are robust and resilient to these extremes. And so this is why I think soil carbon and soil health are often a pretty good partnership.” - Dr. Mark Liebig

Soil has always been a sink for carbon, but over the decades as more land has been converted to cultivated cropland, we’ve released a lot of that stored carbon back into the atmosphere. Dr. Liebig goes on to make practice suggestions to best support carbons sequestration.

“Increase your biomass production, that's number one, maintain that soil cover, apply organic amendments. On the loss side, we want to minimize that soil disturbance as much as possible. If we can, don't burn that crop residue. That's a really good way to lose a lot of carbon.” Dr. Mark Liebig

Dr. Gasch explains the origin, cyclical nature and different types of carbon available in the soil. Another prominent variable in the success of carbon sequestration is the weather and its effects on the soil. Because of all of these factors, changing and verifying the soil’s carbon material is a slow and involved process.

“A 1% increase in organic carbon takes between 10 and 15 years….and that would be under best management practices, minimal tillage, and maximum plant productivity.” - Dr. Caley Gasch

This Week on Soil Sense:

  • Meet Dr. Mark Liebig with the USDA ARS and Dr. Caley Gasch a soil ecologist with North Dakota State University
  • Explore the different types of carbon present in the soil
  • Discover the strategies in maintaining and encouraging carbon storage in the soil
  • Learn how increasing soil carbon takes a long time and there are many variables at play
  • Visit the “Catching Carbon” Workshop to see more on this topic

Connect with Soil Sense

Soil Sense Podcast is hosted by Tim Hammerich of the Future of Agriculture Podcast.

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