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 matter, carbonate, and color as soil clues, not absolutes
• extreme pH swings shaping efficacy, injury, and carryover
• decision framework from damage mitigation to suppression
• variable rates to protect sensitive crops and rotations
• SmartFirmer OM layers and controller-friendly rate steps
• lidar, soil series, and as‑applied maps to refine zones
• practical limits of sensors and when algorithms help
• closing insights and where we push rates or back off

Missed the first two parts of this episode? Check out our previous episodes! https://www.buzzsprout.com/2297340

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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 gallon on fertilizer labels 
• comparing phosphorus from 10-34-0 and 6-24-6 
• implications for starter fertilizer in cold springs 
• simple rules to avoid under or over application

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

https://gktechinc.com/

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, pattern, and drift control matter
• PWM and duty cycle basics
• Turn compensation for consistent coverage
• Mixing residuals with post products without losing efficacy
• DIect injection timing challenges at boom length
• Dual-tank, dual-boom systems for split strategies
• Cost and scale drivers for adoption of certain spray systems
• Green-on-brown paired with variable-rate residuals
• Drone mapping kochia and wild oat patches for targeted residuals
• Reducing passes, resistance pressure, and carryover risk

Stick around for the final part of our discussion, part 3!

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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‑over‑year P, K and pH trends
• When composites signal a move to zones
• Benchmarks versus wider composite coverage
• Core counts for quarters and half sections
• Gear tips: external GPS pucks and apps
• Faster fieldwork once points are mapped
• Starting with GK Field Mapper and ADMS exports

More info about GK Field Mapper here: https://gktechinc.com/gk_field_mapper/

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/

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 applications
• Soil variability across landscape positions
• Reading labels and guidance on applications based on soil OM, pH and texture
• Diagnosing sunflower and pea herbicide injury patterns
• Pre- versus Post-herbicide application nuance and resistance risk
• Carrier volume (GPA: gallons per acre) as a rate knob
• Coverage demands for contact herbicides
• Sprayer pressure, droplets, and nozzle behavior
• When to split passes versus going across a field once

At GK Technology, we have a map and an app for that!

https://gktechinc.com/

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 forests with leached E horizons
• alfisols, clay accumulation, and hardpan concerns
• histosols in peat bogs with high organic matter
• ultisols in the South, iron oxides, and low-activity clays
• regional patterns across the Upper Midwest to the Southeast
• field tips for digging, observing, and managing horizons

Tune in next time for a Tiny Byte of knowledge from GK Technology, where we have a map and an app for that!

https://gktechinc.com/

https://gktechinc.com/

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 on outlets, trouble spots, directionality will be important
• ADMS Surface Shaping tools: build wall, cut‑fill hills, morph
• logistics of dirt sourcing and yardage
• fill percentage to counter soil settling and swell
• Surface Shaping controller needs a prescription map to run
• SD Surface release timing and ditching toggle
• RTK, slope sensors, hardware compatibility
• prep early for support and uptime
• water management ROI across acres

Good water management pays!

*At the time of recording this episode, the original plan was for release of SD Surface mid-September, but we are still doing some tests, so stay tuned for a later release!  

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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 23rd through October 19th, celebrating its 10th year of operation
• The main maze covers 121 acres with five different difficulty levels and pathways totaling over 20 miles
• Matt used ADMS software, JD Operations Center, and John Deere planting technology to create his family's corn maze instead of mowing paths.
• For the detailed 15-acre section, Matt used "crisscross" planting at 40,000 seeds per acre for thicker corn (no cheating here!)
• Converting the maze design to a highly detailed boundary file required high-resolution mapping
• The maze offers QR codes for visitors to navigate using their phones and see their location
• Additional attractions include a giant straw pyramid slide, corn boxes, a zipline, and various activities for kids and adults of all ages.
• Educational elements teach visitors about agriculture
• The corn maze is a family operation with a focus on agritainment and agricultural education
• Admission is $12.50 per person, kids  <36" tall are free, with special events throughout the season

Help Matt and his family reach their goal of 10,000 visitors this fall and plan your trip at www.valleycornmaize.com or search Valley Corn Maize on social media (Facebook, Instagram, TikTok). You won't want to miss visiting the World's Largest Corn Maze!

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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 eliminating problematic water-holding areas through advanced design and precision implementation.

• Surface Shaping differs from land leveling by focusing on water direction rather than just creating flat surfaces
• Surface maps are created within ADMS, producing cut/fill maps showing where soil should be removed and where it should be added (the controller will move the blade to do exactly what the map calls for)
• Preserves agronomic integrity by allowing farmers to limit topsoil removal to prevent exposing clay subsoil
• Implements precise design plans where equipment operators follow color-coded maps until areas turn green
• Requires less technical expertise from equipment operators since the plan guides the entire process
• Focus applications include: Red River Valley field surface modifications, irrigation grade preparation, terrace building, and construction site preparation
• Requires farmer input during mapping stage to ensure the design meets specific field needs
• Can reduce fuel and labor costs by eliminating unnecessary passes across the field

Contact GK Technology to learn more about how Surface Shaping can transform your field's drainage and productivity.

SD Surface will not be available fall 2025, but we will keep you updated on the official release date!

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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 contributes to greater pore spaces
• Bulk density increases as you go deeper into the soil profile
• Tillage initially reduces bulk density but destroys aggregate structure
• No-till transitions require time for new aggregate formation
• Compacted soils with high bulk density limit root exploration
• The ideal soil provides adequate pore space for root growth
• Calculating total nutrients requires understanding soil bulk density

More on measuring bulk density and bulk density as a soil health indicator: https://www.nrcs.usda.gov/sites/default/files/2023-01/Soil%20Quality-Indicators-Bulk%20Density.pdf

Join us for our next Tiny Bytes! 

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https://gktechinc.com/