Ag Geek Speak

We talk with Matt Krueger about his field-level view of autonomous tillage with a 9R series John Deere tractor, from kit installation to dust-driven safety stops, and how better boundaries and AutoPath boost both uptime and data quality. Matt's story centers on labor flexibility, real costs, and where autonomy should expand next.

In this special hour-long episode we talk:
• autonomy kit details, JDLink Boost connectivity, d...

We dig into why low (acidic) soil pH unlocks aluminum toxicity, how that halts root growth, and which crops suffer first. Then we lay out a practical plan to find acidic patches with smarter sampling, NDVI, and grid-the-zone strategies, and point to lime and buffer pH for the fix.

In this episode, we discuss...
• soil pH as chemical control and pH level of 7 is neutral
• aluminum toxicity risk to crops increases below 6.5 pH...

Welcome back to the second part of our conversation with Preston Sundeen to explore how a two-year ag program prepares students for precision agriculture careers by building real-world skills across hardware, software, GIS, and agronomy. Sundeen's focus is practical confidence: clean data, sound troubleshooting, critical thinking, and learning to ask better questions.
 

We also talk about...

• defining precision ag as practi...

We unpack why soybean leaves turn yellow in patches, thanks to soybean IDC (iron deficiency chlorosis) and how to predict IDC risk for management. We share the exact soil tests that matter, how to read the lab results, and where precision mapping saves money and yield thanks to IDC management.

We also discuss...

• defining iron chlorosis
• why iron-rich soils still cause deficiency
• limits of testing for DTPA iron alone
...

We break down what “salty soil” really means and why salinity and sodicity demand different fixes. We share how to properly diagnose a soil as saline, sodic, or saline/sodic through soil sampling and testing, to avoid turning a manageable patch into concrete.

We also discuss....
• defining normal, saline, sodic, saline-sodic with soil test EC and sodium results
• why salinity causes drought-like stress without wrec...

We sit down with Preston Sundean to trace a path from farm kid to precision ag educator and entrepreneur. We dig into teaching ADMS, turning data into fast prescriptions, and why critical thinking matters more than button sequences.

In this episode we discuss...
• Preston's North Dakota farm roots and agribusiness training
• Career moves from ag retail to precision ag education
• COVID pivot into entrepreneurship an...

We map residual herbicide rates with field truth, not guesses, turning five-zone soil maps into targeted prescriptions that cut injury and hit weed spawn sites. We weigh OM, pH, texture, and landscape to protect sensitive crops now and keep rotations flexible next year.

In this episode we discuss...

• base maps from precision soil sampling and scouting knowledge
• modded zones for unique poor areas and weed hotspots
• organic...

We unpack why liquid fertilizer math trips people up and discuss how to figure out how to determine pounds of fertilizer in a liquid fertilizer. We talk real examples and show how small liquid fertilizer densities can drastically affect starter outcomes, especially in cold soils.

In this Tiny Bytes, we talk

• the dry vs liquid mindset shift 
• how density changes gallons into pounds 
• where to find pounds per gallo...

We sit down (again) with Kyle Okke of Agile Agronomy and explore how to make variable-rate residual herbicides actually work, from nozzle physics to dual-tank setups, and why agronomy must lead every tech decision. We also talk PWM (pulse width modulation), drift control, and mapping weed hot spots for smarter applications.

Additionally...
• Limits of conventional pressure-based rate changes
• Why droplet size, pat...

We unpack why “precision composite soil sampling” isn’t a contradiction and show how GPS-marked points turn an old method into a reliable trend tool. We cover workflows, gear, timing, and when shifting results should push you toward zones.

In this episode we discuss 

• Pre‑GPS composite sampling and its limits
• Marking exact GPS points for repeatability
• Keeping post‑harvest or spring timing consistent
• Tracking year‑o...

We explore using precision agriculture to variable-rate apply residual herbicides using soil-driven maps to reduce crop injury on sensitive zones while maintaining strong weed control. Kyle Okke joins us to explain why OM, pH, and texture can set the rate and how sprayer mechanics affect success.

In this episode, we discuss

• Specialty crops that rely on pre-emerge residuals
• Resistant weeds driving need for fall residual applic...

We break down soil orders like a field guide, linking what you see in a soil profile to how soils behave and how to manage them. From prairie-black mollisols to red-dirt ultisols, we share traits, regions, and practical tips growers can use today.

• soil taxonomy as a practical framework
• mollisols and their dark, organic-rich surface
• vertisols with shrink–swell clays and timing risks
• spodosols in conifer ...

Catch the first part of this episode here: https://www.buzzsprout.com/2297340/episodes/17664422

In part two of introducing Surface Shaping, Kelly walks us through how to turn a watershed map into a buildable surface shaping plan that automatically controls a scraper. Kelly also shares the ADMS tools, soil insights, controller details, and timing tips that make smarter water movement practical and profitable.

• farmer input ...

Matt Kruger joins us to share the fascinating story of creating the world's largest corn maze spanning 121 acres with over 20 miles of pathways using precision agriculture technology. We explore how advanced planting techniques, boundary files, and ADMS technology transformed a traditional corn maze operation into a record-breaking agricultural attraction.

• Valley Corn Maize east of East Grand Forks, MN opens August ...

GK Technology introduces Surface Shaping and SD Surface (in conjunction with Rust Sales) which offers land managers an innovative approach to field design. Surface Shaping allows for advanced drainage design, giving farmers the ability to design intentional water flow and directionality, above and beyond normal ditching and "land leveling." Kelly Sharpe explains how this new technology preserves valuable topsoil while eli...

Soil is more than just what we see on the surface, on average consisting of 45% mineral components, 5% organic matter, 25% water, and 25% air, with bulk density measuring how much dry soil weighs per volume. 

• Bulk density indicates the space available in soil for air and water
• Sandy soils counterintuitively have higher bulk density than clay soils
• Clay soils typically contain more organic matter which contrib...

Sarah and Jodi continue their conversation about common precision agriculture issues encountered during spring planting, focusing on field boundaries, controller settings, and troubleshooting variable rate applications.

• Field boundaries matter critically for prescription applications – without proper mapping, sections of equipment may shut off unexpectedly
• Prairie Pothole regions require special boundary considerat...

NDVI (Normalized Difference Vegetative Index) helps farmers detect how green and/or productive different areas of their fields are by measuring the ratio of near-infrared to red light reflected from plant canopies. This technology creates reliable productivity zone maps when analyzed consistently over multiple growing seasons, enabling targeted input management across variable field conditions.

In this Tiny Byte Sarah and Jodi cover...

Sarah and Jodi reflect on the fast-paced spring planting season of 2025, sharing their experiences supporting customers with ADMS software and troubleshooting common prescription issues while managing rapidly changing field conditions.

Situations and questions they cover: 
• When to dissolve prescriptions during the export process to optimize controller compatibility
• Understanding the difference between hard brea...