Highlights

• China controls 90% of rare-earth magnet production and 80%+ of battery materials, creating concentrated supply-chain exposure for autonomous tractors, drones, and robots that depend on these critical minerals.
• April 2025 export controls on heavy rare earths have already triggered export declines and regional price gaps, with the highest near-term risk to magnet-dense products like agricultural drones and compact field robots.
• Mitigation options remain limited despite diversification efforts by MP Materials, Lynas, and Neo Performance Materials, leaving investors to favor firms with transparent sourcing tiers and strategic inventory buffers.

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Agricultural automation is growing as farms need more reliable work with fewer people. Autonomy depends on motors, magnets, batteries, and chips—so it depends on critical minerals and rare earth elements (REEs). China dominates key midstream stages for rare-earth magnets and many battery materials, creating export leverage that can ripple into equipment pricing and availability. 

Executive Summary

Rare Earth Exchanges™ reports numerous estimates suggesting China held about 60% of 2024 mining for magnet REEs (Nd, Pr, Dy, Tb), about 90% of separation/refining, and about 90% of NdFeB magnet manufacturing. In April 2025 China implemented export controls on seven heavy REEs and related magnets, followed by export declines and large non-China price gaps. 

Battery exposure is comparable. China holds 80%+ shares in many battery midstream/downstream segments, including near-monopoly positions (95%+) in some, and it flags graphite anode material as a key vulnerability, with supply options outside China remaining very limited. 

The Sector’s Pull

U.S. Department of Agriculture research on specialty crops frames automation as urgently needed to address labor shortages and rising labor costs.  OECD analysis of AI uptake in European agriculture links adoption to an ageing and shrinking workforce.  Once autonomy enters a fleet, it becomes a multi-year procurement program, so mineral exposure persists.

The Hidden Bill of Materials

“China-dominated” here means concentrated Chinese midstream and/or demonstrated export-control leverage. 

Product category (includes sub-systems)	Key mineral / REE inputs	China-dominated exposure
Autonomous tractors; motors; actuators; permanent magnets	NdPr + Dy/Tb (NdFeB); Cu	High
Drones/UAVs; battery systems; power electronics	NdPr + Dy/Tb; Li; Ni/Co; graphite; Ga	High
Ground robotics; battery systems; sensors	NdPr + Dy/Tb; Li/graphite; Ta	High
Precision sensors (vision/LiDAR/radar)	Ga; In; Ta	Med-High
GPS/comms hardware	Ga; Ta	Med-High
Electric irrigation/pumps (VFDs, controllers)	Cu; Ga; possible NdPr	Medium

U.S. Department of Energy explains NdFeB magnets rely on Nd/Pr, with Dy (and sometimes Tb) added for high-temperature stability.  U.S. Geological Survey notes magnets are the leading global end use for rare earths and often arrive embedded in finished goods.  USGS also reports 100% U.S. reliance on net imports for gallium, a key input for GaAs/GaN semiconductors. 

Company Exposure Table

Product focus is drawn from official product pages and investor releases. 

Company	Product Focus	REE/mineral exposure	Export-risk vulnerability
Deere	autonomous tractors	magnets + chips	Med–High
CNH Industrial	autonomy/robotics	magnets + chips	Medium
AGCO / Trimble	retrofit autonomy + guidance	chips + actuators	Medium
Kubota	autonomous tractors	actuators + chips	Medium
DJI*	ag drones	magnets + batteries	High
Naïo Technologies	electric field robots	magnets + batteries	High

*Chinese drone maker

Where the Shock Lands in One to Three Years

Highest-risk products are magnet-dense and battery-dependent: drones and compact robots. Rare Earth Exchanges reporting shows April 2025 controls reduced exports and drove sharp regional price gaps, and it warns magnet capacity outside China remains limited. 

Near-term risk channels include price shocks; licensing/qualification delays; certification and quality gaps in non-China magnets and anode materials; and inventory/contract mismatches (electronics ready, magnets not). 

Likelihood	Impact	Risk
High	High	NdFeB export licensing delays
Medium	High	graphite/anode disruption
Medium	Medium	gallium constraints hit power electronics
Low	High	geopolitical embargo shock

The Steps

• mining
• separation
• alloying/magnets
• components
• assembly
• farm product

Show Code

Mitigation exists, but it is thin. Companies pursue diversification, long-term contracts, stockpiles, onshoring pilots, vertical integration, recycling, and design substitution (for example, reducing Dy where feasible).  Examples: MP Materials is scaling U.S. NdPr metal and NdFeB magnet output; Neo Performance Materials opened a magnet facility in Estonia; and Lynas Rare Earths is pursuing processing partnerships (including in Vietnam) aimed at feeding U.S. magnet manufacturing. 

Investor implication: favor firms that can show magnet sourcing tiers (including Dy/Tb), battery chemistry, and graphite/anode sourcing, gallium exposure, and strategic inventory buffers.

Methods and What to Watch

Bill-of-materials detail is often proprietary. The product-to-mineral mapping above is an informed inference, not a disclosed SKU-level BOM. Some market-growth forecasts can be optimistic; labor, trade, and geology sources are more reliable. Priority sources: IEA critical-minerals and battery-risk analysis; USGS Mineral Commodity Summaries 2026; and DOE magnet supply-chain reports.