91ר

Close-up of a John 91ר ProSeries planter toolbar showing seed distribution hoses and row unit components against a clear blue sky.

RelativeFlow™ Blockage

When you're seeding, the last thing you want is to find out miles later that a blockage has been costing you seed, fertilizer, and yield. RelativeFlow Blockage is a near-real-time monitoring system for air seeding tools that detects flow blockages as they happen – right from inside the tractor cab – so you can catch problems before they become costly.

Sensors placed on the towers and secondary air hoses measure flow through each one, then compare the rate of each hose relative to the others on the same tower. A yellow alert signals reduced flow; red means a complete blockage. Everything displays on your existing John 91ר in-cab display – no additional monitors or third-party hardware required.



Blockages don't always announce themselves. By the time uneven emergence shows up in the field, the damage is done.

RelativeFlow Blockage helps protect against yield loss from skips, wasted inputs from uneven application, and costly downtime by catching issues early and keeping you moving. Available as a Precision Upgrade for compatible John 91ר air seeding tools. Also available factory-installed on new equipment.

Compatible with 1910 Air Carts (model year 2014 or newer), C650/C850 Air Carts (model year 2017 or newer), C350T/L to C1100T Air Carts (model year 2025 or newer), carts equipped with an AccuRate™ Meter Precision Upgrade, and GreenStar™ 3 2630, Gen 4, and G5 Displays.

Farmer's hand holding a tablet displaying AirSeeding TruSet precision agriculture software with crop data, field maps, and equipment monitoring screens visible on the display, with a harvested grain field in the background
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LET'S TALK

Schedule an evaluation of your current equipment with your John 91ר dealer.

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CUSTOMIZE

Our trained technicians will help you determine the best upgrade solution for your operation.

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INSTALL

Add the latest technology and replace worn parts at the same time.

Performance Upgrades Grow

GROW

Strengthen ROI, reduce input costs and improve yields with a Precision Upgrade.

Precision Upgrades and Precision Technology

More and more farmers are using precision technology to find new efficiencies, improve yields and increase profits.
Here are the basics to get you started.

G5 Display

G5 Display

Manage guidance lines, application rates, input placement, and more with a bigger, faster, and clearer touchscreen display compared to our previous models.

StarFire™ 7500 Receiver

Starfire™ 7500 Receiver

The next generation receiver – with SF-RTK gives you accuracy within 2.5 cm and up to 73% faster pull-in times2.

Woman in cab using the JDLink connection

JDLink™ Connection1

Connect your machines — regardless of brand or age — for fast data transfer to your Operations Center Account.

John 91ר Operations Center™

John 91ר Operations Center™

The leading cloud-based farm management system to help you monitor, organize, analyze, and share your data 24/7.

1You can turn on JDLink connected service in your John 91ר Operations Center account for free. JDLink requires a cellular connection to transfer information from machine to Operations Center. Consult your John 91ר Dealer for coverage availability.

2Compared to previous models.