Modified John Deere makes tracks as world's first ammonia-fueled tractor

Farm equipment – Western Illinois University School of Agriculture

John Deere launches the 9RX tractor line, and a lot more

John Deere: New sprayers, upgraded tractor models for 2022 available for order this year

Hydrofuel Inc.

Amogy's Ammonia-Powered Tractor

Power Farming Tractor Of The Year by Power Farming - Issuu

New Holland Agriculture launches Blue Series SIMBA tractor at EIMA Agrimach 2022 - Agriculture Post

John Deere launches full self-driving tractor - Innovation Village

A Retired JPL Engineer's Journey: From Space Probes to Carbon-Neutral Farming - IEEE Spectrum

Burns me to a crisp': Farmers allege link between popular herbicide paraquat and Parkinson's disease - EHN