Soil Physics and Soil Biology with Dr. Aaron Daigh - a podcast by NDSU Extension

Explore the scientific principles forming the foundation of soil health. Dr. Aaron Daigh of North Dakota State University joins us to discuss the impact of movement and distribution of water, heat, and nutrients in the soil. Dr Daigh draws an analogy between pores in the soil and plumbing in a building. Through the natural processes of freezing, wetting, drying, and thawing pores are developed in the soil. These pores are crucial to nutrient and water retention. He shares the effect that tillage practices have on heat transfer and retention within the soil as well as to the pore size and distribution. Understanding these scientific principles can lead to more informed decisions on farming practices. Dr. Daigh shares the ongoing research in this field and where the focus is shifting.
“It’s kind of like taking all the piping in your house or the building or in a chemical plant and rearranging it to the way that you want…..When you go in and you till a soil you are kind of homogenizing everything. You’re making all the pipes kind of very similar to each other at least in the depth that you’re tilling at.” - Dr. Aaron Daigh
“When you go into a no-till or reduced till system…. you have a whole bunch of small pores and those pores are what can really hold onto water longer. They can hold onto nutrients longer and keep it available in a spot that the plant can use later on.”  - Dr. Aaron Daigh
This Week on Soil Sense:

Meet Dr. Aaron Daigh and learn what it means to be a soil physicist

Explore how tillage disrupts the natural pores in the soil and affects the movement of water and nutrients

Dr. Daigh teaches us how the different sized pores are developed in the soil and the benefits they provide.

Discover the up and coming research in the area of Soil Science


Connect with Soil Sense:

Soil Sense Initiative


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

Further episodes of Soil Sense

Further podcasts by NDSU Extension

Website of NDSU Extension