We trade puns and practical advice while breaking down what soil electrical conductivity really measures and why soils can carry electrical current. We compare lab EC numbers to on-the-go EC mapping so you can spot salinity risk without over-reading a single map layer.

In this episode we talk
• soil electrical conductivity defined as soil water carrying current
• soluble salts as a major driver of EC and why saltier water conducts better
• other EC influences including porosity, texture, clay mineralogy, moisture, temperature, and organic matter
• how cation exchange capacity ties into conductivity in clay and organic matter
• lab EC as a standardized measurement that supports comparison across fields and years
• on-the-go EC mapping as a way to see field variability while staying mindful of non-standard conditions
• Va=eris depth measurements using discs and why dry soils can distort results
• EM38 and magnetic susceptibility plus why it may handle dry soil differently
• calibrating EC maps with soil cores and lab tests to understand what variability means
• interpreting soil test EC thresholds such as EC over 4 dS/m being considered saline in NDSU guidance

Tune in next time for a tiny bite of knowledge from GK Technology, where we have a map and an app for that.

Other episodes mentioned:

S2E17.5 Cracking the Code of Salty Soils https://www.buzzsprout.com/2297340/episodes/18217995

https://gktechinc.com/

We sit down with North Dakota State College of Science's Precision Ag Tech & Precision Ag Program Coordinator and farmer Chandra Langseth to talk about the winding path that took her from a non-farm background into soil science and agriculture. We also get into what precision ag looks like on a working North Dakota farm and how she brings real farm decisions into her classes at NDSCS.

In this episode we chat about
• Chandra’s background in North Dakota and how she finds her way into agriculture
• switching majors and discovering soil science through key classes and mentors
• why agriculture needs non-farm perspectives to solve real challenges
• how soil variability changes management decisions across a single operation
• corn, soybeans, and sunflowers plus the realities of irrigation and drainage work on-farm
• remote irrigation monitoring that texts when pivots stop
• starting variable rate fertility with limited equipment capability
• using a real farm as a class problem for mapping and decision-making
• what she teaches at NDSCS: intro precision ag, mapping, scouting, pesticide prep, weed ID
• how NDSCS programs split between precision ag tech and precision agronomy career paths

Find out more about NDSCS's Agriculture Program here: https://ndscs.edu/agriculture/

https://gktechinc.com/

We dig into why soil compaction is more than “hard ground” and how it quietly limits roots, water, and oxygen in ways that can cut yields. We also walk through how a penetrometer works, what PSI numbers actually mean, and how to take readings that do not fool you.

In this episode we talk about...
• soil compaction as reduced pore space and increased root resistance
• common field hotspots like headlands and wet-traffic scars
• impacts on oxygen movement, water uptake, root depth, drought resilience, and fuel use
• why compaction severity varies and how that changes tillage decisions
• penetrometers, cone index readings, and what 200 PSI and 300 PSI suggest
• texture changes in the soil profile that can feel like compaction
• best timing for testing at field capacity and why wet or dry soil skews results
• sampling tips like steady pressure, avoiding tracks unless diagnosing, and clearing surface litter

Tune in next time for a tiny bite of knowledge from GK Technology, where we have a map and an app for that.

https://gktechinc.com/